Threats Tagged 'brushworm'
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Threats Tagged 'brushworm'
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A South Asian financial institution was targeted with two custom malware components: BRUSHWORM, a modular backdoor, and BRUSHLOGGER, a keylogger. BRUSHWORM features anti-analysis checks, encrypted configuration, scheduled task persistence, modular payload downloading, USB worm propagation, and extensive file theft. BRUSHLOGGER uses DLL side-loading to capture system-wide keystrokes with window context tracking. The malware's low sophistication and implementation flaws suggest an inexperienced author, possibly using AI code-generation tools. Multiple testing versions were discovered on VirusTotal, indicating iterative development. The malware components combine to create a functional collection platform with modular loading, USB propagation, broad file theft, air-gap bridging, and persistent keystroke capture. Join the discussion | AlienVault OTX General | 03/27/2026, 08:45:50 UTC Added: 03/27/2026, 09:44:44 UTC |
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