MicroStealer has emerged as a sophisticated infostealer malware, first identified in late 2025, that targets sensitive information such as browser credentials, session cookies, cryptocurrency wallet data, and desktop screenshots. Its delivery mechanism utilizes a multi-stage chain comprising NSIS installers, Electron applications, and Java payloads, making it challenging to detect using traditional methods. Notably, it employs dual-channel exfiltration techniques-both through Discord webhooks and attacker-controlled servers, to ensure data is sent even if one channel becomes compromised.