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SigmaHQ Detections

@sigmaHQ
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6,800 detections

Detects usage of "appcmd" to create new global URL rewrite rules. This behaviour has been observed being used by threat actors to add new rules so they can access their webshells.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
Detects attempts to delete Internet Information Services (IIS) log files via command line utilities, which is a common defense evasion technique used by attackers to cover their tracks.
Threat actors often abuse vulnerabilities in web applications hosted on IIS servers to gain initial access and later delete IIS logs to evade detection.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
Detects the use of "Ilasm.EXE" in order to compile C# intermediate (IL) code to EXE or DLL.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
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Detects unusual parent or children of the ImagingDevices.exe (Windows Contacts) process as seen being used with Bumblebee activity
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
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Detects usage of "IMEWDBLD.exe" to download arbitrary files
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
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Detects use of .NET InstallUtil.exe in order to download arbitrary files. The files will be written to "%LOCALAPPDATA%\Microsoft\Windows\INetCache\IE\"
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
Detects the execution of the "jsc.exe" (JScript Compiler).
Attacker might abuse this in order to compile JScript files on the fly and bypassing application whitelisting.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
Detects execution of the Windows Kernel Debugger "kd.exe".
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
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Detects the execution of "Ldifde.exe" with the import flag "-i". The can be abused to include HTTP-based arguments which will allow the arbitrary download of files from a remote server.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
Detects an uncommon parent process of "LINK.EXE".
Link.EXE in Microsoft incremental linker. Its a utility usually bundled with Visual Studio installation.
Multiple utilities often found in the same folder (editbin.exe, dumpbin.exe, lib.exe, etc) have a hardcode call to the "LINK.EXE" binary without checking its validity.
This would allow an attacker to sideload any binary with the name "link.exe" if one of the aforementioned tools get executed from a different location.
By filtering the known locations of such utilities we can spot uncommon parent process of LINK.EXE that might be suspicious or malicious.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
7 months ago
000
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