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SigmaHQ Detections

@sigmaHQ
12 followers122,473 downloads2,593 copies16 likes160,512 views

6,800 detections

Detects the execution of Sysinternals PsService, a utility that can be used for service reconnaissance, management, and potential tampering. This tool can be leveraged by adversaries for discovery, privilege escalation, or persistence by interacting with Windows services.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects uncommon child processes spawned by "userinit.exe". Legitimate child processes of userinit.exe typically include explorer.exe, logon scripts (like netlogon.bat, UsrLogon.cmd), PowerShell.exe on Windows Core, and specific Citrix or proquota.exe processes. The rule aims to identify suspicious or malicious executables launched by userinit.exe, which could indicate persistence mechanisms or privilege escalation attempts.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects the use of wmic.exe to modify user account settings and explicitly disable password expiration. This action can be used by adversaries to maintain persistence on a compromised account by preventing its password from expiring, thus avoiding the need to frequently update credentials.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
This rule detects the creation or modification of a Windows service where the service binary's path is located in a suspicious directory. Adversaries often place malicious service executables in non-standard or temporary locations to evade detection and establish persistence. The rule specifically looks for service image paths containing '\Users\Public\', '\Perflogs\', '\ADMIN$\' or '\Temp\'.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects registry modifications that disable or change features of internal Windows tools, often used by malware for defense evasion or persistence. This includes disabling command prompt, control panel, run dialog, task manager, user account control (UAC) prompts, write protection, and notification center.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects the installation of a DNS plugin DLL by monitoring modifications to the 'ServerLevelPluginDll' registry parameter. This technique can be used by adversaries to execute arbitrary code within the context of the DNS server, often requiring a restart of the DNS service to take effect. This can lead to privilege escalation and persistence on a compromised system.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects potential COM object hijacking by monitoring modifications to the default values of InprocServer32 or LocalServer32 subkeys within specific CLSIDs in the Windows Registry. The rule specifically looks for these modifications occurring in suspicious file system locations commonly used by adversaries for persistence or staging.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0015
Detects suspicious use of the WSMAN provider without PowerShell.exe as the host application. This could indicate an adversary attempting to use Windows Remote Management (WinRM) for lateral movement or execution without directly invoking PowerShell, potentially to evade detection.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0016
This rule detects potential DLL sideloading of 'EACore.dll'. It specifically looks for instances where 'EACore.dll' is loaded by an executable, but the executable or the loaded DLL is not from the legitimate 'C:\Program Files\Electronic Arts\EA Desktop\EACoreServer.exe' path. This technique can be used by adversaries for persistence, defense evasion, and privilege escalation by tricking legitimate applications into loading malicious DLLs.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0014
Detects potential DLL sideloading of "mfdetours.dll" when loaded by a process other than the legitimate "mftrace.exe" from its expected path. This technique can be abused to force load a malicious DLL named "mfdetours.dll" from the current directory of execution, allowing for persistence, privilege escalation, or defense evasion.
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
1 year ago
0014
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