Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects unexpected crashes of major security software agents (e.g., Antivirus, EDR) that are not associated with authorized vendor update or installation activities, potentially indicating tampering or exploitation attempts to disable security controls.
Detects unexpected crashes of major security software agents (e.g., Antivirus, EDR) that are not associated with authorized vendor update or installation activities, potentially indicating tampering or exploitation attempts to disable security controls.
Detects unexpected crashes of major security software agents (e.g., Antivirus, EDR) that are not associated with authorized vendor update or installation activities, potentially indicating tampering or exploitation attempts to disable security controls.
This rule detects attempts to modify file or directory permissions (e.g., using icacls, takeown, chmod, or chown) on paths associated with known security products. Such activity is often indicative of an adversary attempting to tamper with, disable, or exclude security tools from logging or inspection.
This rule detects modifications to Group Policy Objects (GPO) or Microsoft Entra (formerly Azure AD) policies that weaken established security controls. For GPO, it monitors Event ID 5136 for changes to security-relevant attributes (e.g., disabling firewall or real-time monitoring) in Active Directory. For Entra, it monitors audit logs for administrative operations that reduce security posture, such as disabling MFA, lowering authentication trust, or deleting Conditional Access policies. It includes filters to exclude legitimate, documented change management activities.
This rule detects IDS/IPS or vulnerability management alerts triggered by exploitation attempts targeting the Cisco IOS XR control plane, specifically related to CVE-2026-20212.
Detects country-coded lure path requests (/eg, /ma) followed by a cloaking differential response (desktop UA blocked with 404, mobile UA served content). Fixed a regex bug where the original pattern matched any path merely starting with 'eg' or 'ma' (e.g. /egg.jpg, /mail, /manifest.json) instead of the exact path segment.
Detects active phishing threat-intelligence indicators whose domain name uses one of the disposable TLDs observed across IronToll's 73+ rotating lookalike domains (.cfd, .sbs, .icu, .buzz, etc.). Scoped to the structured ThreatType classification only — dropped the free-text 'Description has phishing' fallback, since KQL's 'has' is a substring/token match with no negation awareness (e.g. a description stating an indicator is 'not related to phishing' would still match), which could pull in indicators unrelated to actual phishing activity.
Detects active phishing threat-intelligence indicators whose domain name uses one of the disposable TLDs observed across IronToll's 73+ rotating lookalike domains (.cfd, .sbs, .icu, .buzz, etc.). Scoped to the structured ThreatType classification only — dropped the free-text 'Description has phishing' fallback, since KQL's 'has' is a substring/token match with no negation awareness (e.g. a description stating an indicator is 'not related to phishing' would still match), which could pull in indicators unrelated to actual phishing activity.
Detects emails delivering links to IronToll government-impersonation traffic-fine/payment portals (Egyptian and Moroccan justice-ministry lures), correlated with Safe Links click-through telemetry for the same URLs.
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