{ "type": "Domain", "indicator": "ubisoft.com", "general": { "sections": [ "general", "geo", "url_list", "passive_dns", "malware", "whois", "http_scans" ], "whois": "http://whois.domaintools.com/ubisoft.com", "alexa": "http://www.alexa.com/siteinfo/ubisoft.com", "indicator": "ubisoft.com", "type": "domain", "type_title": "Domain", "validation": [ { "source": "akamai", "message": "Akamai rank: #3826", "name": "Akamai Popular Domain" }, { "source": "majestic", "message": "Whitelisted domain ubisoft.com", "name": "Whitelisted domain" }, { "source": "whitelist", "message": "Whitelisted domain ubisoft.com", "name": "Whitelisted domain" } ], "base_indicator": { "id": 1657101, "indicator": "ubisoft.com", "type": "domain", "title": "", "description": "", "content": "", "access_type": "public", "access_reason": "" }, "pulse_info": { "count": 3, "pulses": [ { "id": "69e0941d8d439e7a477874c8", "name": "Overlay + Exp Certs", "description": "", "modified": "2026-05-16T08:43:10.045000", "created": "2026-04-16T07:47:41.334000", "tags": [ "gb st", "salford o", "sectigo limited", "sectigo rsa", "time stamping", "yara detections", "legalcopyright", "iobit", "cn st", "sheng l" ], "references": [], "public": 1, "adversary": "", "targeted_countries": [], "malware_families": [], "attack_ids": [], "industries": [], "TLP": "green", "cloned_from": null, "export_count": 0, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 1, "follower_count": 0, "vote": 0, "author": { "username": "msudosos", "id": "381696", "avatar_url": "https://otx.alienvault.com/assets/images/default-avatar.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 562, "FileHash-SHA1": 136, "FileHash-SHA256": 2302, "URL": 129, "domain": 24, "hostname": 120, "email": 2, "JA3": 3 }, "indicator_count": 3278, "is_author": false, "is_subscribing": null, "subscriber_count": 68, "modified_text": "14 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 }, { "id": "6992bae83a5988dff8311490", "name": "Distributed Credential Exhaustion & C2 Orchestration via Golang-Based StealthWorker (ELF.Agent-VW)", "description": "Researcher credit: msudosos, level blue platform----\nThis artifact represents a high-integrity StealthWorker (GoBrut) botnet agent, architected as a statically linked, stripped 32-bit ELF binary to ensure cross-platform environmental independence. The sample utilizes XOR 0x20-encoded JavaScript payloads and String.fromCharCode obfuscation to mask its internal logic and bypass heuristic-based memory scanners. [User Notes] Its operational core is a multi-threaded service bruter targeting SSH, MySQL, and CMS backends, leveraging a massive infrastructure of 1,834 domains and 797 unique IPv4 endpoints for decentralized Command & Control (C2). Network telemetry confirms the use of ICMP and HTTP-based beaconing, indicating a sophisticated retry logic designed to maintain persistence across diverse network topologies. With a malicious file score of 10, this binary serves as a primary vector for large-scale credential harvesting and the subsequent integration of Linux infrastructure into global botnet clusters.", "modified": "2026-04-24T13:20:48.450000", "created": "2026-02-16T06:36:24.788000", "tags": [ "Obfuscation: XOR-based String Encryption (0x20)", "T1110.001 (Brute Force: Password Guessing)", "Primary Hash (SHA256): cd3989830da99a69380901769fd78902efb3cd8ba", "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "#PotentialUS-Origin_FalseFlag_Obfuscation" ], "references": [ "Primary Hash (SHA256): cd3989830da99a69380901769fd78902efb3cd8ba5c9390e94bd4333b7fad186", "Obfuscation: XOR-based String Encryption (0x20)", "T1110.001 (Brute Force: Password Guessing)", "This ELF 32-bit LSB artifact is a sophisticated GoBrut/StealthWorker agent, compiled via Golang 1.10 and stripped to obfuscate its high-velocity service-bruting logic. VirusTotal confirms a critical threat profile with 44/65 security vendors flagging the file, which leverages a unique Go BuildID (nGYES3pajdOm...) and a Telfhash (t1f303a0...) for architectural fingerprinting. The binary orchestrates decentralized Command and Control (C2) through an expansive infrastructure of 797 unique IPs and 1,834 domains", "Pivot-Ready Indicators (IOCs) Go BuildID: nGYES3pajdOmKy1i6Ghh/KO9ydOtZpXtoKtB0KHE-/iisNoniHgTbj_cV6M-uk/XmMYzkBiZs8NXMRZYTiT Telfhash: t1f303a0b3055d54e8b7f08907c7af7624cef6e0f726d078f169e278d09a72c826626874 Imphash: 9698f46495ce9401c8bcaf9a2afe1598 Vhash: 1e53f1a1b59ecb93f821c74b25d81e9f", "Researcher msudosos posits a strategic exploitation of Root Certificate Validation Failures, where the adversary leverages an expired trust chain to bypass heuristic security filters and establish persistence.", "his technique allows the GoBrut/StealthWorker agent to circumvent automated revocation checks, enabling its decentralized C2 infrastructure to recruit Linux hosts via high-velocity credential exhaustion.", "The local environment exhibits advanced telemetry suppression within specialized skim memory regions, effectively neutralizing standard DMARC validation and Microsoft-integrated defensive protocols.", "By maintaining a hollowed root posture, the sample facilitates persistent, low-signal synchronization with external cloud infrastructure while bypassing traditional heuristic trust-chain verification.", "The domain prioritywirreles.com (registered via NAMECHEAP INC) shows a 4/93 detection ratio, confirming it is a live but \"low-noise\" C2 node used to avoid broad-spectrum blacklisting", "", "The environment leverages prioritywirreles.com as a high-fidelity DGA-derived C2 node, utilizing its historical resolution to Russian-hosted IP space (194.61.24.231) to maintain persistent Stealthworker botnet synchronization.", "By operating through WhoisGuard-protected infrastructure and exploiting XOR 0x20 obfuscation, the adversary effectively suppresses telemetry into skim space, successfully bypassing DMARC and Microsoft-integrated trust-chain validation.", "The pivot from cd398983... to this domain confirms a multi-year campaign (2019\u20132023) utilizing Namecheap-registered infrastructure to orchestrate wide-scale T1110.001 brute-force operations while bypassing standard PKI expiration checks.", "LBresearcher: msudosos notes: The campaign's use of T1110.001 (Password Guessing) is specifically tuned to exhaust credentials across SSH, MySQL, and CMS backends, effectively recruiting server infrastructure into a global \"zombie\" network.", "LBresearcher: msudosos notes: The threat actor maintains operational longevity by rotating through WhoisGuard-protected nodes like prioritywirreles.com, which historically resolved to Russian-hosted IP space (194.61.24.231) to obfuscate its origin.", "LBresearcher: msudosos notes: By exploiting Root Certificate Validation Failures, the StealthWorker (GoBrut) agent ensures that its 32-bit ELF binaries bypass the automated reputation checks enforced by major cloud providers.", "Monitor DGA Shifts: Track new domains registered through NAMECHEAP INC using the current WhoisGuard patterns to identify the next cluster before it goes active. Analyze Telfhash Clusters: Use the Telfhash (t1f303a0...) to pivot and find if the adversary has updated to 64-bit ELF or ARM architectures. Harden DMARC: Ensure your environment moves from \"p=none\" to \"p=reject\" to mitigate the internal spoofing loops exploited by this botnet's telemetry suppression.", "Persistent C2 Orchestration: This ELF:Agent-VW variant serves as a critical GoBrut node, utilizing XOR 0x20 obfuscation and ICMP/HTTP beaconing to maintain a persistent link across 1,834 domains and 797 unique IPs", "Researcher msudosos: This activity appears to facilitate a preliminary reconnaissance phase, possibly utilizing system commands to query /proc/cpuinfo and /proc/version for architectural profiling purposes.", "Researcher msudosos suggests the VirusTotal (Tencent HABO) behavior report may indicate a potential execution path from volatile storage at /tmp/EB93A6/996E.elf.", "Msudosos Regional Notes: While historical pivots show Russian-hosted nodes, the current dual-origin telemetry\u2014dominated by 181 United States-based endpoints\u2014strongly suggests a domestic-aligned adversary leveraging global 'grey space' to obfuscate its operational core. This massive US-centric footprint (exceeding all other regions combined) reinforces the theory of a false-flag orchestration designed to divert attribution toward foreign infrastructure while abusing legitimate Western-hosted trust chains.", "WHOIS data anchors administrative and technical operations for prioritywirreles.com in Los Angeles, CA (90064) via Namecheap infrastructure. Following its 2020 expiration, the domain has transitioned into redemptionPeriod/pendingDelete status, signaling the formal decommissioning of this C2 asset." ], "public": 1, "adversary": "StealthWorker/GoBrut (The adversary demonstrates advanced telemetry suppression within specialized s", "targeted_countries": [], "malware_families": [ { "id": "Malware Family: StealthWorker / GoBrut", "display_name": "Malware Family: StealthWorker / GoBrut", "target": "/malware/Malware Family: StealthWorker / GoBrut" }, { "id": "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "display_name": "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "target": null } ], "attack_ids": [ { "id": "T1001", "name": "Data Obfuscation", "display_name": "T1001 - Data Obfuscation" } ], "industries": [], "TLP": "green", "cloned_from": null, "export_count": 5, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 0, "follower_count": 0, "vote": 0, "author": { "username": "msudosos", "id": "381696", "avatar_url": "https://otx.alienvault.com/assets/images/default-avatar.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 2166, "FileHash-SHA1": 2067, "FileHash-SHA256": 3371, "domain": 13295, "URL": 6860, "email": 272, "hostname": 4705, "SSLCertFingerprint": 268, "CVE": 108, "CIDR": 6 }, "indicator_count": 33118, "is_author": false, "is_subscribing": null, "subscriber_count": 82, "modified_text": "36 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 }, { "id": "659560d63178b32f07838efb", "name": "Covert | Big O Tires active cyber threat | Dark Power | Emotet|", "description": "Active, ongoing cyber threat, multiple malicious activities including, network rat, ransomware encryption, social engineering, spammers, infostealer, botnet activity.\nConsumers may also be contacted by mail or phone or find account seized. I haven't benn able to properly access the magnitude of the issue, there has been at least a handful of customers in good standing , with higher limits on paid of cards that ended up being stolen or according to Big O Representatives 'closed' for unfounded reasons; failure to confirm citizenship, identity, unknown patriot act offences, failure to comply Big O Tires via mail.", "modified": "2024-02-02T12:04:41.638000", "created": "2024-01-03T13:27:50.685000", "tags": [ "ioc search", "new ioc", "teams api", "contact", "threat analyzer", "threat", "paste", "iocs", "hostnames", "urls https", "http response", "final url", "ip address", "status code", "body length", "kb body", "sha256", "unsafeeval", "path", "expiressat", "auto", "wheels online", "o tires", "shop tires", "html info", "title shop", "tires", "meta tags", "big o", "tires language", "name verdict", "falcon sandbox", "samples", "localappdata", "json data", "temp", "getprocaddress", "ascii text", "windir", "file", "indicator", "mitre att", "ck id", "factory", "hybrid", "model", "comspec", "ssl certificate", "whois record", "execution", "contacted", "historical ssl", "whois whois", "simda http", "collections", "historical", "dropped", "backdoor", "unknown", "united", "asnone", "show", "entries", "search", "intel", "ms windows", "pe32", "windows nt", "copy", "write", "logic", "download", "malware", "suspicious", "next", "destination", "port", "components", "globalnpf", "china as23724", "music", "data c", "mexico", "as15169 google", "passive dns", "scan endpoints", "all octoseek", "ipv4", "pulse pulses", "urls", "files", "win32", "united kingdom", "explorer", "xserver", "mtb aug", "location united", "america asn", "open", "trojan", "worm", "dataadobereader", "as397240", "msie", "etpro trojan", "virgin islands", "script urls", "creation date", "record value", "date", "a domains", "all search", "otx octoseek", "url http", "http", "related nids", "pulse http", "url https", "files location", "as20940", "aaaa", "as2914 ntt", "canada unknown", "japan unknown", "as16625 akamai", "domain", "hostname", "gmt content", "gmt report", "0 report", "sea alt", "body", "encrypt", "social engineering", "revenge rat", "rat", "identity theft", "credit card", "referrer", "communicating", "bundled", "family", "roots", "lolkek", "tzw variants", "quasar rat", "dark power", "swisyn", "wiper", "ransomware", "cobalt strike", "attack", "core", "emotet", "exploit", "hacktool", "mail spammer", "as63949 linode", "mtb dec", "checkin m1", "trojanspy", "artro", "remote", "infostealer" ], "references": [ "https://hybrid-analysis.com/sample/3fb8f0af07a9e94045be0f592c675e4f6146c95523f1774bc03f8eb5cf8c7d4e/65951c3d58467c9eb00f69dc" ], "public": 1, "adversary": "", "targeted_countries": [ "United States of America", "Ukraine", "Georgia", "India", "Hong Kong", "Canada", "China", "Indonesia", "South Africa", "Germany", "Slovenia", "Mexico", "Netherlands", "Japan", "Spain", "Argentina", "France", "Chile", "Italy", "Aruba", "Switzerland", "United Kingdom of Great Britain and Northern Ireland", "Denmark", "Poland", "Colombia", "Taiwan", "Bulgaria", "Austria", "Russian Federation", "Australia", "Philippines", "Norway", "Sweden" ], "malware_families": [ { "id": "Trojan:Win32/Comspec", "display_name": "Trojan:Win32/Comspec", "target": "/malware/Trojan:Win32/Comspec" }, { "id": "#Lowfi:SCPT:KiraAsciiObfuscator", "display_name": "#Lowfi:SCPT:KiraAsciiObfuscator", "target": null }, { "id": "Backdoor:Win32/Simda", "display_name": "Backdoor:Win32/Simda", "target": "/malware/Backdoor:Win32/Simda" }, { "id": "Crypt3.BLXP", "display_name": "Crypt3.BLXP", "target": null }, { "id": "PWS:Win32/VB.CU", "display_name": "PWS:Win32/VB.CU", "target": "/malware/PWS:Win32/VB.CU" }, { "id": "Trojan:MSIL/ClipBanker.GB!MTB", "display_name": "Trojan:MSIL/ClipBanker.GB!MTB", "target": "/malware/Trojan:MSIL/ClipBanker.GB!MTB" }, { "id": "Virus:Win32/Floxif.H", "display_name": "Virus:Win32/Floxif.H", "target": "/malware/Virus:Win32/Floxif.H" }, { "id": "Win.Packed.Zusy-7170176-0", "display_name": "Win.Packed.Zusy-7170176-0", "target": null }, { "id": "Win.Trojan.Zbot-9880005-0", "display_name": "Win.Trojan.Zbot-9880005-0", "target": null }, { "id": "'Win32:Trojan-gen", "display_name": "'Win32:Trojan-gen", "target": null }, { "id": "TEL:TrojanDownloader:O97M/MsiexecAbuse", "display_name": "TEL:TrojanDownloader:O97M/MsiexecAbuse", "target": null }, { "id": "Worm:Win32/Mofksys.B", "display_name": "Worm:Win32/Mofksys.B", "target": "/malware/Worm:Win32/Mofksys.B" }, { "id": "Worm:Win32/Mofksys.RND!MTB", "display_name": "Worm:Win32/Mofksys.RND!MTB", "target": "/malware/Worm:Win32/Mofksys.RND!MTB" }, { "id": "Worm:LOGO/Logic", "display_name": "Worm:LOGO/Logic", "target": "/malware/Worm:LOGO/Logic" }, { "id": "ETPro Trojan", "display_name": "ETPro Trojan", "target": null }, { "id": "LolKek", "display_name": "LolKek", "target": null }, { "id": "Ransomware", "display_name": "Ransomware", "target": null }, { "id": "Quasar RAT", "display_name": "Quasar RAT", "target": null }, { "id": "Emotet", "display_name": "Emotet", "target": null }, { "id": "TrojanSpy:Win32/Swisyn", "display_name": "TrojanSpy:Win32/Swisyn", "target": "/malware/TrojanSpy:Win32/Swisyn" }, { "id": "Dark Power", "display_name": "Dark Power", "target": null }, { "id": "Cobalt Strike", "display_name": "Cobalt Strike", "target": null }, { "id": "HackTool", "display_name": "HackTool", "target": null }, { "id": "TrojanSpy", "display_name": "TrojanSpy", "target": null }, { "id": "Artro", "display_name": "Artro", "target": null } ], "attack_ids": [ { "id": "T1027", "name": "Obfuscated Files or Information", "display_name": "T1027 - Obfuscated Files or Information" }, { "id": "T1036", "name": "Masquerading", "display_name": "T1036 - Masquerading" }, { "id": "T1057", "name": "Process Discovery", "display_name": "T1057 - Process Discovery" }, { "id": "T1059", "name": "Command and Scripting Interpreter", "display_name": "T1059 - Command and Scripting Interpreter" }, { "id": "T1071", "name": "Application Layer Protocol", "display_name": "T1071 - Application Layer Protocol" }, { "id": "T1082", "name": "System Information Discovery", "display_name": "T1082 - System Information Discovery" }, { "id": "T1105", "name": "Ingress Tool Transfer", "display_name": "T1105 - Ingress Tool Transfer" }, { "id": "T1106", "name": "Native API", "display_name": "T1106 - Native API" }, { "id": "T1129", "name": "Shared Modules", "display_name": "T1129 - Shared Modules" }, { "id": "T1140", "name": "Deobfuscate/Decode Files or Information", "display_name": "T1140 - Deobfuscate/Decode Files or Information" }, { "id": "T1546", "name": "Event Triggered Execution", "display_name": "T1546 - Event Triggered Execution" }, { "id": "T1060", "name": "Registry Run Keys / Startup Folder", "display_name": "T1060 - Registry Run Keys / Startup Folder" }, { "id": "T1119", "name": "Automated Collection", "display_name": "T1119 - Automated Collection" }, { "id": "T1056", "name": "Input Capture", "display_name": "T1056 - Input Capture" }, { "id": "T1546.015", "name": "Component Object Model Hijacking", "display_name": "T1546.015 - Component Object Model Hijacking" }, { "id": "T1083", "name": "File and Directory Discovery", "display_name": "T1083 - File and Directory Discovery" }, { "id": "T1071.003", "name": "Mail Protocols", "display_name": "T1071.003 - Mail Protocols" }, { "id": "T1071.004", "name": "DNS", "display_name": "T1071.004 - DNS" }, { "id": "T1012", "name": "Query Registry", "display_name": "T1012 - Query Registry" }, { "id": "T1059.007", "name": "JavaScript", "display_name": "T1059.007 - JavaScript" }, { "id": "TA0011", "name": "Command and Control", "display_name": "TA0011 - Command and Control" }, { "id": "T1583.005", "name": "Botnet", "display_name": "T1583.005 - Botnet" } ], "industries": [ "Telecommunications" ], "TLP": "green", "cloned_from": null, "export_count": 29, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 0, "follower_count": 0, "vote": 0, "author": { "username": "OctoSeek", "id": "243548", "avatar_url": "/otxapi/users/avatar_image/media/avatars/user_243548/resized/80/avatar_3b9c358f36.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 560, "FileHash-SHA1": 350, "FileHash-SHA256": 4371, "URL": 8165, "domain": 2548, "hostname": 2813, "CVE": 4, "email": 3 }, "indicator_count": 18814, "is_author": false, "is_subscribing": null, "subscriber_count": 224, "modified_text": "848 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 } ], "references": [ "", "Persistent C2 Orchestration: This ELF:Agent-VW variant serves as a critical GoBrut node, utilizing XOR 0x20 obfuscation and ICMP/HTTP beaconing to maintain a persistent link across 1,834 domains and 797 unique IPs", "By maintaining a hollowed root posture, the sample facilitates persistent, low-signal synchronization with external cloud infrastructure while bypassing traditional heuristic trust-chain verification.", "The environment leverages prioritywirreles.com as a high-fidelity DGA-derived C2 node, utilizing its historical resolution to Russian-hosted IP space (194.61.24.231) to maintain persistent Stealthworker botnet synchronization.", "Researcher msudosos posits a strategic exploitation of Root Certificate Validation Failures, where the adversary leverages an expired trust chain to bypass heuristic security filters and establish persistence.", "The pivot from cd398983... to this domain confirms a multi-year campaign (2019\u20132023) utilizing Namecheap-registered infrastructure to orchestrate wide-scale T1110.001 brute-force operations while bypassing standard PKI expiration checks.", "https://hybrid-analysis.com/sample/3fb8f0af07a9e94045be0f592c675e4f6146c95523f1774bc03f8eb5cf8c7d4e/65951c3d58467c9eb00f69dc", "T1110.001 (Brute Force: Password Guessing)", "The domain prioritywirreles.com (registered via NAMECHEAP INC) shows a 4/93 detection ratio, confirming it is a live but \"low-noise\" C2 node used to avoid broad-spectrum blacklisting", "Researcher msudosos suggests the VirusTotal (Tencent HABO) behavior report may indicate a potential execution path from volatile storage at /tmp/EB93A6/996E.elf.", "By operating through WhoisGuard-protected infrastructure and exploiting XOR 0x20 obfuscation, the adversary effectively suppresses telemetry into skim space, successfully bypassing DMARC and Microsoft-integrated trust-chain validation.", "Primary Hash (SHA256): cd3989830da99a69380901769fd78902efb3cd8ba5c9390e94bd4333b7fad186", "LBresearcher: msudosos notes: By exploiting Root Certificate Validation Failures, the StealthWorker (GoBrut) agent ensures that its 32-bit ELF binaries bypass the automated reputation checks enforced by major cloud providers.", "Researcher msudosos: This activity appears to facilitate a preliminary reconnaissance phase, possibly utilizing system commands to query /proc/cpuinfo and /proc/version for architectural profiling purposes.", "his technique allows the GoBrut/StealthWorker agent to circumvent automated revocation checks, enabling its decentralized C2 infrastructure to recruit Linux hosts via high-velocity credential exhaustion.", "Msudosos Regional Notes: While historical pivots show Russian-hosted nodes, the current dual-origin telemetry\u2014dominated by 181 United States-based endpoints\u2014strongly suggests a domestic-aligned adversary leveraging global 'grey space' to obfuscate its operational core. This massive US-centric footprint (exceeding all other regions combined) reinforces the theory of a false-flag orchestration designed to divert attribution toward foreign infrastructure while abusing legitimate Western-hosted trust chains.", "LBresearcher: msudosos notes: The campaign's use of T1110.001 (Password Guessing) is specifically tuned to exhaust credentials across SSH, MySQL, and CMS backends, effectively recruiting server infrastructure into a global \"zombie\" network.", "The local environment exhibits advanced telemetry suppression within specialized skim memory regions, effectively neutralizing standard DMARC validation and Microsoft-integrated defensive protocols.", "LBresearcher: msudosos notes: The threat actor maintains operational longevity by rotating through WhoisGuard-protected nodes like prioritywirreles.com, which historically resolved to Russian-hosted IP space (194.61.24.231) to obfuscate its origin.", "Monitor DGA Shifts: Track new domains registered through NAMECHEAP INC using the current WhoisGuard patterns to identify the next cluster before it goes active. Analyze Telfhash Clusters: Use the Telfhash (t1f303a0...) to pivot and find if the adversary has updated to 64-bit ELF or ARM architectures. Harden DMARC: Ensure your environment moves from \"p=none\" to \"p=reject\" to mitigate the internal spoofing loops exploited by this botnet's telemetry suppression.", "Obfuscation: XOR-based String Encryption (0x20)", "WHOIS data anchors administrative and technical operations for prioritywirreles.com in Los Angeles, CA (90064) via Namecheap infrastructure. Following its 2020 expiration, the domain has transitioned into redemptionPeriod/pendingDelete status, signaling the formal decommissioning of this C2 asset.", "Pivot-Ready Indicators (IOCs) Go BuildID: nGYES3pajdOmKy1i6Ghh/KO9ydOtZpXtoKtB0KHE-/iisNoniHgTbj_cV6M-uk/XmMYzkBiZs8NXMRZYTiT Telfhash: t1f303a0b3055d54e8b7f08907c7af7624cef6e0f726d078f169e278d09a72c826626874 Imphash: 9698f46495ce9401c8bcaf9a2afe1598 Vhash: 1e53f1a1b59ecb93f821c74b25d81e9f", "This ELF 32-bit LSB artifact is a sophisticated GoBrut/StealthWorker agent, compiled via Golang 1.10 and stripped to obfuscate its high-velocity service-bruting logic. VirusTotal confirms a critical threat profile with 44/65 security vendors flagging the file, which leverages a unique Go BuildID (nGYES3pajdOm...) and a Telfhash (t1f303a0...) for architectural fingerprinting. The binary orchestrates decentralized Command and Control (C2) through an expansive infrastructure of 797 unique IPs and 1,834 domains" ], "related": { "alienvault": { "adversary": [], "malware_families": [], "industries": [] }, "other": { "adversary": [ "StealthWorker/GoBrut (The adversary demonstrates advanced telemetry suppression within specialized s" ], "malware_families": [ "#lowfi:scpt:kiraasciiobfuscator", "Trojan:win32/comspec", "Malware family: stealthworker / gobrut", "Backdoor:win32/simda", "Virus:win32/floxif.h", "Ransomware", "Win.trojan.zbot-9880005-0", "Pws:win32/vb.cu", "Cobalt strike", "Hacktool", "Worm:win32/mofksys.rnd!mtb", "Lolkek", "Trojanspy", "Md5 hash: f8add7e7161460ea2b1970cf4ca535bf", "Trojan:msil/clipbanker.gb!mtb", "Artro", "Tel:trojandownloader:o97m/msiexecabuse", "Crypt3.blxp", "Emotet", "Trojanspy:win32/swisyn", "Worm:win32/mofksys.b", "Win.packed.zusy-7170176-0", "'win32:trojan-gen", "Dark power", "Quasar rat", "Worm:logo/logic", "Etpro trojan" ], "industries": [ "Telecommunications" ] } } }, "false_positive": [] }, "geo": {}, "geo_ipapicom": {}, "pulse_count": 3, "pulses": [ { "id": "69e0941d8d439e7a477874c8", "name": "Overlay + Exp Certs", "description": "", "modified": "2026-05-16T08:43:10.045000", "created": "2026-04-16T07:47:41.334000", "tags": [ "gb st", "salford o", "sectigo limited", "sectigo rsa", "time stamping", "yara detections", "legalcopyright", "iobit", "cn st", "sheng l" ], "references": [], "public": 1, "adversary": "", "targeted_countries": [], "malware_families": [], "attack_ids": [], "industries": [], "TLP": "green", "cloned_from": null, "export_count": 0, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 1, "follower_count": 0, "vote": 0, "author": { "username": "msudosos", "id": "381696", "avatar_url": "https://otx.alienvault.com/assets/images/default-avatar.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 562, "FileHash-SHA1": 136, "FileHash-SHA256": 2302, "URL": 129, "domain": 24, "hostname": 120, "email": 2, "JA3": 3 }, "indicator_count": 3278, "is_author": false, "is_subscribing": null, "subscriber_count": 68, "modified_text": "14 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 }, { "id": "6992bae83a5988dff8311490", "name": "Distributed Credential Exhaustion & C2 Orchestration via Golang-Based StealthWorker (ELF.Agent-VW)", "description": "Researcher credit: msudosos, level blue platform----\nThis artifact represents a high-integrity StealthWorker (GoBrut) botnet agent, architected as a statically linked, stripped 32-bit ELF binary to ensure cross-platform environmental independence. The sample utilizes XOR 0x20-encoded JavaScript payloads and String.fromCharCode obfuscation to mask its internal logic and bypass heuristic-based memory scanners. [User Notes] Its operational core is a multi-threaded service bruter targeting SSH, MySQL, and CMS backends, leveraging a massive infrastructure of 1,834 domains and 797 unique IPv4 endpoints for decentralized Command & Control (C2). Network telemetry confirms the use of ICMP and HTTP-based beaconing, indicating a sophisticated retry logic designed to maintain persistence across diverse network topologies. With a malicious file score of 10, this binary serves as a primary vector for large-scale credential harvesting and the subsequent integration of Linux infrastructure into global botnet clusters.", "modified": "2026-04-24T13:20:48.450000", "created": "2026-02-16T06:36:24.788000", "tags": [ "Obfuscation: XOR-based String Encryption (0x20)", "T1110.001 (Brute Force: Password Guessing)", "Primary Hash (SHA256): cd3989830da99a69380901769fd78902efb3cd8ba", "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "#PotentialUS-Origin_FalseFlag_Obfuscation" ], "references": [ "Primary Hash (SHA256): cd3989830da99a69380901769fd78902efb3cd8ba5c9390e94bd4333b7fad186", "Obfuscation: XOR-based String Encryption (0x20)", "T1110.001 (Brute Force: Password Guessing)", "This ELF 32-bit LSB artifact is a sophisticated GoBrut/StealthWorker agent, compiled via Golang 1.10 and stripped to obfuscate its high-velocity service-bruting logic. VirusTotal confirms a critical threat profile with 44/65 security vendors flagging the file, which leverages a unique Go BuildID (nGYES3pajdOm...) and a Telfhash (t1f303a0...) for architectural fingerprinting. The binary orchestrates decentralized Command and Control (C2) through an expansive infrastructure of 797 unique IPs and 1,834 domains", "Pivot-Ready Indicators (IOCs) Go BuildID: nGYES3pajdOmKy1i6Ghh/KO9ydOtZpXtoKtB0KHE-/iisNoniHgTbj_cV6M-uk/XmMYzkBiZs8NXMRZYTiT Telfhash: t1f303a0b3055d54e8b7f08907c7af7624cef6e0f726d078f169e278d09a72c826626874 Imphash: 9698f46495ce9401c8bcaf9a2afe1598 Vhash: 1e53f1a1b59ecb93f821c74b25d81e9f", "Researcher msudosos posits a strategic exploitation of Root Certificate Validation Failures, where the adversary leverages an expired trust chain to bypass heuristic security filters and establish persistence.", "his technique allows the GoBrut/StealthWorker agent to circumvent automated revocation checks, enabling its decentralized C2 infrastructure to recruit Linux hosts via high-velocity credential exhaustion.", "The local environment exhibits advanced telemetry suppression within specialized skim memory regions, effectively neutralizing standard DMARC validation and Microsoft-integrated defensive protocols.", "By maintaining a hollowed root posture, the sample facilitates persistent, low-signal synchronization with external cloud infrastructure while bypassing traditional heuristic trust-chain verification.", "The domain prioritywirreles.com (registered via NAMECHEAP INC) shows a 4/93 detection ratio, confirming it is a live but \"low-noise\" C2 node used to avoid broad-spectrum blacklisting", "", "The environment leverages prioritywirreles.com as a high-fidelity DGA-derived C2 node, utilizing its historical resolution to Russian-hosted IP space (194.61.24.231) to maintain persistent Stealthworker botnet synchronization.", "By operating through WhoisGuard-protected infrastructure and exploiting XOR 0x20 obfuscation, the adversary effectively suppresses telemetry into skim space, successfully bypassing DMARC and Microsoft-integrated trust-chain validation.", "The pivot from cd398983... to this domain confirms a multi-year campaign (2019\u20132023) utilizing Namecheap-registered infrastructure to orchestrate wide-scale T1110.001 brute-force operations while bypassing standard PKI expiration checks.", "LBresearcher: msudosos notes: The campaign's use of T1110.001 (Password Guessing) is specifically tuned to exhaust credentials across SSH, MySQL, and CMS backends, effectively recruiting server infrastructure into a global \"zombie\" network.", "LBresearcher: msudosos notes: The threat actor maintains operational longevity by rotating through WhoisGuard-protected nodes like prioritywirreles.com, which historically resolved to Russian-hosted IP space (194.61.24.231) to obfuscate its origin.", "LBresearcher: msudosos notes: By exploiting Root Certificate Validation Failures, the StealthWorker (GoBrut) agent ensures that its 32-bit ELF binaries bypass the automated reputation checks enforced by major cloud providers.", "Monitor DGA Shifts: Track new domains registered through NAMECHEAP INC using the current WhoisGuard patterns to identify the next cluster before it goes active. Analyze Telfhash Clusters: Use the Telfhash (t1f303a0...) to pivot and find if the adversary has updated to 64-bit ELF or ARM architectures. Harden DMARC: Ensure your environment moves from \"p=none\" to \"p=reject\" to mitigate the internal spoofing loops exploited by this botnet's telemetry suppression.", "Persistent C2 Orchestration: This ELF:Agent-VW variant serves as a critical GoBrut node, utilizing XOR 0x20 obfuscation and ICMP/HTTP beaconing to maintain a persistent link across 1,834 domains and 797 unique IPs", "Researcher msudosos: This activity appears to facilitate a preliminary reconnaissance phase, possibly utilizing system commands to query /proc/cpuinfo and /proc/version for architectural profiling purposes.", "Researcher msudosos suggests the VirusTotal (Tencent HABO) behavior report may indicate a potential execution path from volatile storage at /tmp/EB93A6/996E.elf.", "Msudosos Regional Notes: While historical pivots show Russian-hosted nodes, the current dual-origin telemetry\u2014dominated by 181 United States-based endpoints\u2014strongly suggests a domestic-aligned adversary leveraging global 'grey space' to obfuscate its operational core. This massive US-centric footprint (exceeding all other regions combined) reinforces the theory of a false-flag orchestration designed to divert attribution toward foreign infrastructure while abusing legitimate Western-hosted trust chains.", "WHOIS data anchors administrative and technical operations for prioritywirreles.com in Los Angeles, CA (90064) via Namecheap infrastructure. Following its 2020 expiration, the domain has transitioned into redemptionPeriod/pendingDelete status, signaling the formal decommissioning of this C2 asset." ], "public": 1, "adversary": "StealthWorker/GoBrut (The adversary demonstrates advanced telemetry suppression within specialized s", "targeted_countries": [], "malware_families": [ { "id": "Malware Family: StealthWorker / GoBrut", "display_name": "Malware Family: StealthWorker / GoBrut", "target": "/malware/Malware Family: StealthWorker / GoBrut" }, { "id": "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "display_name": "MD5 Hash: f8add7e7161460ea2b1970cf4ca535bf", "target": null } ], "attack_ids": [ { "id": "T1001", "name": "Data Obfuscation", "display_name": "T1001 - Data Obfuscation" } ], "industries": [], "TLP": "green", "cloned_from": null, "export_count": 5, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 0, "follower_count": 0, "vote": 0, "author": { "username": "msudosos", "id": "381696", "avatar_url": "https://otx.alienvault.com/assets/images/default-avatar.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 2166, "FileHash-SHA1": 2067, "FileHash-SHA256": 3371, "domain": 13295, "URL": 6860, "email": 272, "hostname": 4705, "SSLCertFingerprint": 268, "CVE": 108, "CIDR": 6 }, "indicator_count": 33118, "is_author": false, "is_subscribing": null, "subscriber_count": 82, "modified_text": "36 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 }, { "id": "659560d63178b32f07838efb", "name": "Covert | Big O Tires active cyber threat | Dark Power | Emotet|", "description": "Active, ongoing cyber threat, multiple malicious activities including, network rat, ransomware encryption, social engineering, spammers, infostealer, botnet activity.\nConsumers may also be contacted by mail or phone or find account seized. I haven't benn able to properly access the magnitude of the issue, there has been at least a handful of customers in good standing , with higher limits on paid of cards that ended up being stolen or according to Big O Representatives 'closed' for unfounded reasons; failure to confirm citizenship, identity, unknown patriot act offences, failure to comply Big O Tires via mail.", "modified": "2024-02-02T12:04:41.638000", "created": "2024-01-03T13:27:50.685000", "tags": [ "ioc search", "new ioc", "teams api", "contact", "threat analyzer", "threat", "paste", "iocs", "hostnames", "urls https", "http response", "final url", "ip address", "status code", "body length", "kb body", "sha256", "unsafeeval", "path", "expiressat", "auto", "wheels online", "o tires", "shop tires", "html info", "title shop", "tires", "meta tags", "big o", "tires language", "name verdict", "falcon sandbox", "samples", "localappdata", "json data", "temp", "getprocaddress", "ascii text", "windir", "file", "indicator", "mitre att", "ck id", "factory", "hybrid", "model", "comspec", "ssl certificate", "whois record", "execution", "contacted", "historical ssl", "whois whois", "simda http", "collections", "historical", "dropped", "backdoor", "unknown", "united", "asnone", "show", "entries", "search", "intel", "ms windows", "pe32", "windows nt", "copy", "write", "logic", "download", "malware", "suspicious", "next", "destination", "port", "components", "globalnpf", "china as23724", "music", "data c", "mexico", "as15169 google", "passive dns", "scan endpoints", "all octoseek", "ipv4", "pulse pulses", "urls", "files", "win32", "united kingdom", "explorer", "xserver", "mtb aug", "location united", "america asn", "open", "trojan", "worm", "dataadobereader", "as397240", "msie", "etpro trojan", "virgin islands", "script urls", "creation date", "record value", "date", "a domains", "all search", "otx octoseek", "url http", "http", "related nids", "pulse http", "url https", "files location", "as20940", "aaaa", "as2914 ntt", "canada unknown", "japan unknown", "as16625 akamai", "domain", "hostname", "gmt content", "gmt report", "0 report", "sea alt", "body", "encrypt", "social engineering", "revenge rat", "rat", "identity theft", "credit card", "referrer", "communicating", "bundled", "family", "roots", "lolkek", "tzw variants", "quasar rat", "dark power", "swisyn", "wiper", "ransomware", "cobalt strike", "attack", "core", "emotet", "exploit", "hacktool", "mail spammer", "as63949 linode", "mtb dec", "checkin m1", "trojanspy", "artro", "remote", "infostealer" ], "references": [ "https://hybrid-analysis.com/sample/3fb8f0af07a9e94045be0f592c675e4f6146c95523f1774bc03f8eb5cf8c7d4e/65951c3d58467c9eb00f69dc" ], "public": 1, "adversary": "", "targeted_countries": [ "United States of America", "Ukraine", "Georgia", "India", "Hong Kong", "Canada", "China", "Indonesia", "South Africa", "Germany", "Slovenia", "Mexico", "Netherlands", "Japan", "Spain", "Argentina", "France", "Chile", "Italy", "Aruba", "Switzerland", "United Kingdom of Great Britain and Northern Ireland", "Denmark", "Poland", "Colombia", "Taiwan", "Bulgaria", "Austria", "Russian Federation", "Australia", "Philippines", "Norway", "Sweden" ], "malware_families": [ { "id": "Trojan:Win32/Comspec", "display_name": "Trojan:Win32/Comspec", "target": "/malware/Trojan:Win32/Comspec" }, { "id": "#Lowfi:SCPT:KiraAsciiObfuscator", "display_name": "#Lowfi:SCPT:KiraAsciiObfuscator", "target": null }, { "id": "Backdoor:Win32/Simda", "display_name": "Backdoor:Win32/Simda", "target": "/malware/Backdoor:Win32/Simda" }, { "id": "Crypt3.BLXP", "display_name": "Crypt3.BLXP", "target": null }, { "id": "PWS:Win32/VB.CU", "display_name": "PWS:Win32/VB.CU", "target": "/malware/PWS:Win32/VB.CU" }, { "id": "Trojan:MSIL/ClipBanker.GB!MTB", "display_name": "Trojan:MSIL/ClipBanker.GB!MTB", "target": "/malware/Trojan:MSIL/ClipBanker.GB!MTB" }, { "id": "Virus:Win32/Floxif.H", "display_name": "Virus:Win32/Floxif.H", "target": "/malware/Virus:Win32/Floxif.H" }, { "id": "Win.Packed.Zusy-7170176-0", "display_name": "Win.Packed.Zusy-7170176-0", "target": null }, { "id": "Win.Trojan.Zbot-9880005-0", "display_name": "Win.Trojan.Zbot-9880005-0", "target": null }, { "id": "'Win32:Trojan-gen", "display_name": "'Win32:Trojan-gen", "target": null }, { "id": "TEL:TrojanDownloader:O97M/MsiexecAbuse", "display_name": "TEL:TrojanDownloader:O97M/MsiexecAbuse", "target": null }, { "id": "Worm:Win32/Mofksys.B", "display_name": "Worm:Win32/Mofksys.B", "target": "/malware/Worm:Win32/Mofksys.B" }, { "id": "Worm:Win32/Mofksys.RND!MTB", "display_name": "Worm:Win32/Mofksys.RND!MTB", "target": "/malware/Worm:Win32/Mofksys.RND!MTB" }, { "id": "Worm:LOGO/Logic", "display_name": "Worm:LOGO/Logic", "target": "/malware/Worm:LOGO/Logic" }, { "id": "ETPro Trojan", "display_name": "ETPro Trojan", "target": null }, { "id": "LolKek", "display_name": "LolKek", "target": null }, { "id": "Ransomware", "display_name": "Ransomware", "target": null }, { "id": "Quasar RAT", "display_name": "Quasar RAT", "target": null }, { "id": "Emotet", "display_name": "Emotet", "target": null }, { "id": "TrojanSpy:Win32/Swisyn", "display_name": "TrojanSpy:Win32/Swisyn", "target": "/malware/TrojanSpy:Win32/Swisyn" }, { "id": "Dark Power", "display_name": "Dark Power", "target": null }, { "id": "Cobalt Strike", "display_name": "Cobalt Strike", "target": null }, { "id": "HackTool", "display_name": "HackTool", "target": null }, { "id": "TrojanSpy", "display_name": "TrojanSpy", "target": null }, { "id": "Artro", "display_name": "Artro", "target": null } ], "attack_ids": [ { "id": "T1027", "name": "Obfuscated Files or Information", "display_name": "T1027 - Obfuscated Files or Information" }, { "id": "T1036", "name": "Masquerading", "display_name": "T1036 - Masquerading" }, { "id": "T1057", "name": "Process Discovery", "display_name": "T1057 - Process Discovery" }, { "id": "T1059", "name": "Command and Scripting Interpreter", "display_name": "T1059 - Command and Scripting Interpreter" }, { "id": "T1071", "name": "Application Layer Protocol", "display_name": "T1071 - Application Layer Protocol" }, { "id": "T1082", "name": "System Information Discovery", "display_name": "T1082 - System Information Discovery" }, { "id": "T1105", "name": "Ingress Tool Transfer", "display_name": "T1105 - Ingress Tool Transfer" }, { "id": "T1106", "name": "Native API", "display_name": "T1106 - Native API" }, { "id": "T1129", "name": "Shared Modules", "display_name": "T1129 - Shared Modules" }, { "id": "T1140", "name": "Deobfuscate/Decode Files or Information", "display_name": "T1140 - Deobfuscate/Decode Files or Information" }, { "id": "T1546", "name": "Event Triggered Execution", "display_name": "T1546 - Event Triggered Execution" }, { "id": "T1060", "name": "Registry Run Keys / Startup Folder", "display_name": "T1060 - Registry Run Keys / Startup Folder" }, { "id": "T1119", "name": "Automated Collection", "display_name": "T1119 - Automated Collection" }, { "id": "T1056", "name": "Input Capture", "display_name": "T1056 - Input Capture" }, { "id": "T1546.015", "name": "Component Object Model Hijacking", "display_name": "T1546.015 - Component Object Model Hijacking" }, { "id": "T1083", "name": "File and Directory Discovery", "display_name": "T1083 - File and Directory Discovery" }, { "id": "T1071.003", "name": "Mail Protocols", "display_name": "T1071.003 - Mail Protocols" }, { "id": "T1071.004", "name": "DNS", "display_name": "T1071.004 - DNS" }, { "id": "T1012", "name": "Query Registry", "display_name": "T1012 - Query Registry" }, { "id": "T1059.007", "name": "JavaScript", "display_name": "T1059.007 - JavaScript" }, { "id": "TA0011", "name": "Command and Control", "display_name": "TA0011 - Command and Control" }, { "id": "T1583.005", "name": "Botnet", "display_name": "T1583.005 - Botnet" } ], "industries": [ "Telecommunications" ], "TLP": "green", "cloned_from": null, "export_count": 29, "upvotes_count": 0, "downvotes_count": 0, "votes_count": 0, "locked": false, "pulse_source": "web", "validator_count": 0, "comment_count": 0, "follower_count": 0, "vote": 0, "author": { "username": "OctoSeek", "id": "243548", "avatar_url": "/otxapi/users/avatar_image/media/avatars/user_243548/resized/80/avatar_3b9c358f36.png", "is_subscribed": false, "is_following": false }, "indicator_type_counts": { "FileHash-MD5": 560, "FileHash-SHA1": 350, "FileHash-SHA256": 4371, "URL": 8165, "domain": 2548, "hostname": 2813, "CVE": 4, "email": 3 }, "indicator_count": 18814, "is_author": false, "is_subscribing": null, "subscriber_count": 224, "modified_text": "848 days ago ", "is_modified": true, "groups": [], "in_group": false, "threat_hunter_scannable": true, "threat_hunter_has_agents": 1, "related_indicator_type": "domain", "related_indicator_is_active": 1 } ], "error": null, "vt": { "error": "VirusTotal rate limit reached. Try again shortly.", "indicator": "ubisoft.com", "type": "Domain" }, "abuseipdb": null, "urlhaus": { "indicator": "ubisoft.com", "found": false, "verdict": "clean", "urls": [], "error": null }, "from_cache": true, "_cached_at": 1780214368.4077463 }