Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects PE binaries masquerading as Microsoft's Windows Update Assistant via forged VersionInfo metadata combined with an unsigned or invalid/unverified digital signature, associated with HVNC backdoor delivery
Detects the malicious NFe-themed ZIP dropper MOTOROLA_MOB_COM_NFe_2026-07-16_21781624.zip by known hash and archive structure
Detects the malicious NFe-themed ZIP dropper MOTOROLA_MOB_COM_NFe_2026-07-16_21781624.zip by known hash and archive structure
Detects HVNC final payload masquerading as Windows Update Assistant, combining Firefox credential theft strings, hardcoded AV process names, and XOR-encoded C2 host configuration
Detects HVNC final payload masquerading as Windows Update Assistant, combining Firefox credential theft strings, hardcoded AV process names, and XOR-encoded C2 host configuration
Detects the specific C2 handshake pattern associated with HVNC (Hidden Virtual Network Computing) remote access trojans. The rule monitors for a unique sequence of markers, specifically CLIENT_ID, COMPUTER, IDENTIFIER_CHANNEL, and a version string, indicating a malware-specific communication protocol.
This rule detects sophisticated phishing lure pages impersonating DocuSign or NFe documentation. It specifically identifies pages that implement multi-layered anti-bot gating techniques, including detection of browser automation (navigator.webdriver), identification of headless browser artifacts (headless/HeadlessChrome), and the presence of interaction-wait fallback timers using addEventListener, all tied to specific malicious content indicators.
Detects the download of ZIP files with filenames matching known phishing patterns associated with NFe (Nota Fiscal Eletrônica) campaigns, correlated with access to specific malicious or suspicious download URLs within a 15-minute window.
Detects the execution of known Windows update-related binaries (UpdateAssistant.exe or AppUpdateHelper.exe) from non-standard, suspicious locations within AppData directories. This behavior is indicative of masquerading, where an adversary attempts to blend in by using a legitimate process name from an unexpected path.
Detects the execution of known Windows update-related binaries (UpdateAssistant.exe or AppUpdateHelper.exe) from non-standard, suspicious locations within AppData directories. This behavior is indicative of masquerading, where an adversary attempts to blend in by using a legitimate process name from an unexpected path.
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