PULSE NAME
* BumbleBee Loader * CAPE Sandbox - 5/1/25
WHITE msudosos 2026-05-15 Modified: 2026-05-17
1005
IOCs
HIGH VOLUME
Compilation Timestamp 2025-05-01 18:04:59 UTC Entry Point 527** Contained Sections 7 Written in C++, this malware functions as a first-stage backdoor designed to establish an initial foothold before continuing its stealthy attack to move into MAAS, operations, and development. Bumblebee is primarily delivered via phishing emails—often disguised as invoices—but its scope also includes PDFs, voicemails, zip files, and images. The malware is highly evasive, routinely checking its environment, executing payloads, and creating LOLBins. Related to Operation Endgame, it notably disrupted regsvr32.exe in May 2024. This specific variant was created on May 1, 2025, and appeared to be set into operation on May 5, 2025—interestingly, just one day after Microsoft changed its DKIM, SPF, and DMARC rules. ed76019fbae16d3992d1939c38d620185f4520e128f80983a00cadc6a9c3b509 2025-05-05_77aa5cace886af5e61db8eb4c4cea57e_black-basta_cobalt-strike_satacom
Indicators of Compromise (51 / 1005 total)
All IPv4 FileHash-MD5 FileHash-SHA1 FileHash-SHA256 SSLCertFingerprint URL domain email hostname
TYPEINDICATORDESCRIPTIONCREATED
FileHash-MD5 01ad7ca8bc27f92355fd2895fc474157 2026-05-15
FileHash-MD5 069bccc9f31f57616e88c92650589bdd 2026-05-15
FileHash-MD5 0a8c636978a996eeac05470a04186cda MD5 of 514bdded73c49b95dd07444e05c898dc2f324611 2026-05-15
FileHash-MD5 1045ba04ee65640e89bde0b2684af495 MD5 of 9ddb35fb947e55d340525ab38a635a5a705d6fe0 2026-05-15
FileHash-MD5 10fc635df6263e0df325be5f79cd6767 MD5 of 742c3192e607e424eb4549542be1bbc53e6174e2 2026-05-15
FileHash-MD5 133cd2ed01953fe0f2fa9f28dfc4e730 2026-05-15
FileHash-MD5 1386dbc6dcc5e0be6fef05722ae572ec 2026-05-15
FileHash-MD5 1bfe69d191b71933a372a80fe155e5b5 MD5 of 2b8f1b57330dbba2d07a6c51f70ee90ddab9ad8e 2026-05-15
FileHash-MD5 1c0a578249b658f5dcd4b539eea9a329 2026-05-15
FileHash-MD5 2859c39887921dad2ff41feda44fe174 2026-05-15
FileHash-MD5 32d36d2b0719db2b739af803c5e1c2f5 MD5 of 023c4f1159a2a05420f68daf939b9ac2b04ab082 2026-05-15
FileHash-MD5 337b0e65a856568778e25660f77bc80a 2026-05-15
FileHash-MD5 34e49bb1dfddf6037f0001d9aefe7d61 2026-05-15
FileHash-MD5 365c9bfeb7d89244f2ce01c1de44cb85 2026-05-15
FileHash-MD5 4101128e19134a4733028cfaafc2f3bb 2026-05-15
FileHash-MD5 497904b0eb8719ac47b0bc11519b74d0 MD5 of d1eb23a46d17d68fd92564c2f1f1601764d8e349 2026-05-15
FileHash-MD5 4aa6c1d3dbe4bffd77e9a8f9ba7ed187 2026-05-15
FileHash-MD5 502e5e195c115deebd52c2f229763e0a 2026-05-15
FileHash-MD5 59c25b05ddbc9d3f4c41c421882b2133 MD5 of e54976a989e830310999a0d67c3b526f28c818c7 2026-05-15
FileHash-MD5 5b11cf21f5249ec675c2074c2467b3d6 MD5 of 21dd10ed31bb32d5700bac8d92deaba9f6b723bb 2026-05-15
FileHash-MD5 5e55731824cf9205cfabeab9a0600887 2026-05-15
FileHash-MD5 6a9ca97c039d9bbb7abf40b53c851198 2026-05-15
FileHash-MD5 6f4b8eb45a965372156086201207c81f 2026-05-15
FileHash-MD5 70c3743909329f059ee883254e8bf64b 2026-05-15
FileHash-MD5 71d0a5ff2d59741694bee37d1e5c860b MD5 of 92b46c76e13054e104f230517e6e504d43ab10b5 2026-05-15
FileHash-MD5 7a7953f79aa6621ae63fde89dc55033c 2026-05-15
FileHash-MD5 7f667a71d3eb6978209a51149d83da20 MD5 of be36a4562fb2ee05dbb3d32323adf445084ed656 2026-05-15
FileHash-MD5 8140bdc5803a4893509f0e39b67158ce 2026-05-15
FileHash-MD5 862727139ab02e81d00405310c1d788e MD5 of dd2314752984329a4ea0180e5786b57c8ec5fd3a 2026-05-15
FileHash-MD5 8769adafca3a6fc6ef26f01fd31afa84 2026-05-15
FileHash-MD5 97ee623f1217a7b4b7de5769b7b665d6 2026-05-15
FileHash-MD5 9a24c8c35e4ac4b1597124c1dcbebe0f 2026-05-15
FileHash-MD5 9a4957bdc2a783ed4ba681cba2c99c5c 2026-05-15
FileHash-MD5 b4a170be3c3e502bd8e41f0a05dd79e1 2026-05-15
FileHash-MD5 bc58eb17a9c2e48e97a12174818d969d 2026-05-15
FileHash-MD5 bd18f35f8a56415ec604d97bd3dd44c4 MD5 of 63f51eb5dafeb24327e3bcb63828336c920b4fcd 2026-05-15
FileHash-MD5 d0254ed67b38c020bfc521283ae81481 2026-05-15
FileHash-MD5 d30149d319efcaecf0a5c5e71ef6cb39 MD5 of 99beeb17bfc69e8370036f9457edb4d6812b22e2 2026-05-15
FileHash-MD5 d47e6acf09ead5774d5b471ab3ab96ff 2026-05-15
FileHash-MD5 dba8bbed03ce702482cc492b1ce936c8 MD5 of a8c841a943d0c1493db3cb1e5e98f9df8f3feb72 2026-05-15
FileHash-MD5 de4d104ea13b70c093b07219d2eff6cb 2026-05-15
FileHash-MD5 e1c07ea0aabbd4b77b84c228117808a7 MD5 of cdd4eeae6000ac7f40c3802c171e30148030c072 2026-05-15
FileHash-MD5 e2fcb0ad9ea59332c808928b4b439e7a 2026-05-15
FileHash-MD5 e3d495cf14d857349554a3606a8e7210 MD5 of db0843b89a84fb37efd3c76168bcb303174aac29 2026-05-15
FileHash-MD5 eb1577b40b3c8babae346dd98ead0780 MD5 of 51501fbfce69189d609cfaf140c576755dcc1fdf 2026-05-15
FileHash-MD5 ec21b8ae27649fbd846193c63bc9265f 2026-05-15
FileHash-MD5 f12681a472b9dd04a812e16096514974 2026-05-15
FileHash-MD5 f811933950629043f05c6494bddb5476 2026-05-15
FileHash-MD5 fa8fa9c9d1fc103e211327840f5d1052 2026-05-15
FileHash-MD5 ff8300999335c939fcce94f2e7f039c0 2026-05-15
FileHash-MD5 77aa5cace886af5e61db8eb4c4cea57e MD5 of 579b8c30100421557b93994aa6395f426efc0cb8 2026-05-15