Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects the creation of specific Object Manager namespace directories and objects used by the ShieldCrash proof-of-concept (CVE-2026-69414) to hijack the Microsoft Defender scan process.
Detects the creation of specific Object Manager namespace directories and objects used by the ShieldCrash proof-of-concept (CVE-2026-69414) to hijack the Microsoft Defender scan process.
Detects the creation of specific Object Manager namespace directories and objects used by the ShieldCrash proof-of-concept (CVE-2026-69414) to hijack the Microsoft Defender scan process.
Detects the Warden.dll companion DLL shipped as part of the ShieldCrash (CVE-2026-69414) exploit chain, tightened to require an unsigned/unknown publisher or a suspicious install path alongside the generic filename
Detects presence of multiple ShieldCrash CVE-2026-69414 PoC Visual Studio project/solution build artifacts indicating exploit tooling staging
Detects unexpected crashes or restarts of the Windows Defender service (MsMpEng.exe) occurring in temporal proximity to activities associated with the ShieldCrash PoC or tampering within the Windows Defender object manager namespace. This rule aims to identify potential exploitation attempts targeting Windows Defender, specifically correlating security service instability with known malicious indicators.
Detects unexpected crashes or restarts of the Windows Defender service (MsMpEng.exe) occurring in temporal proximity to activities associated with the ShieldCrash PoC or tampering within the Windows Defender object manager namespace. This rule aims to identify potential exploitation attempts targeting Windows Defender, specifically correlating security service instability with known malicious indicators.
This rule detects network traffic (DNS, TLS, HTTP, and TCP) originating from internal assets to known infrastructure associated with the QTFY proxy botnet/C2 framework. It identifies communication with specific C2 domains, proxy management systems, and associated malicious IP ranges.
Detects high-frequency file creation, modification, or renaming activity involving files with the specific '.df_win' extension, likely indicative of mass encryption activity or automated ransomware behavior. The rule excludes known backup and security software processes to reduce noise.
Detects Run key persistence pointing to the known VBScript staging directory (C:\Users\Public\Libraries\Default\Lib\Lib1) used by the worm-like ScreenConnect campaign (Aug 2026), matching known script filenames (WindowsServiceHost.vbs, 1.vbs-4.vbs) invoked via wscript.exe/cscript.exe.
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