Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

40,045 detections

This rule monitors for two indicators of potentially self-propagating malware: the creation of autorun.inf files on removable or network-mapped drives combined with active SMB network connections (suggesting worm propagation), and the rapid creation of multiple unique executable files across multiple devices (suggesting an outbreak or worm activity).
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
000
Detects execution and file activity associated with the XRed backdoor, which masquerades as 'Synaptics.exe' by running from the non-standard 'C:\ProgramData\Synaptics\' directory instead of authorized system paths.
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Ankit Mehta@Secvyn
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SlimKQL
2 months ago
000
Detects execution and file activity associated with the XRed backdoor, which masquerades as 'Synaptics.exe' by running from the non-standard 'C:\ProgramData\Synaptics\' directory instead of authorized system paths.
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Ankit Mehta@Secvyn
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Detection & Hunting Community
2 months ago
000
This rule detects the use of PowerShell to modify Microsoft Defender settings to disable real-time, behavior, and IOAV protection, while simultaneously adding a full-drive exclusion for the root directory (C:\). This behavior is characteristic of an adversary attempting to disable security monitoring to facilitate further malicious activity or avoid detection.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
This rule detects the use of PowerShell to modify Microsoft Defender settings to disable real-time, behavior, and IOAV protection, while simultaneously adding a full-drive exclusion for the root directory (C:\). This behavior is characteristic of an adversary attempting to disable security monitoring to facilitate further malicious activity or avoid detection.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
This rule detects the use of PowerShell to modify Microsoft Defender settings to disable real-time, behavior, and IOAV protection, while simultaneously adding a full-drive exclusion for the root directory (C:\). This behavior is characteristic of an adversary attempting to disable security monitoring to facilitate further malicious activity or avoid detection.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
001
Detects suspicious persistence mechanisms initiated by the 'wscl.exe' executable. The rule monitors for registry run key modifications, service installation via command-line arguments, and service creation events, specifically filtering for non-standard execution paths (outside of System32, SysWOW64, or Program Files).
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
Detects suspicious persistence mechanisms initiated by the 'wscl.exe' executable. The rule monitors for registry run key modifications, service installation via command-line arguments, and service creation events, specifically filtering for non-standard execution paths (outside of System32, SysWOW64, or Program Files).
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Arnold Chan@slaz
Defender - KQL
2 months ago
001
Detects suspicious persistence mechanisms initiated by the 'wscl.exe' executable. The rule monitors for registry run key modifications, service installation via command-line arguments, and service creation events, specifically filtering for non-standard execution paths (outside of System32, SysWOW64, or Program Files).
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
Detects instances where rundll32.exe is executed by a process named 'eld0.exe' residing in user-writable or temporary directories (e.g., Users, ProgramData, Temp, AppData). This behavior is characteristic of execution flow hijacking or malicious payload loading from suspicious file paths.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
Detects instances where rundll32.exe is executed by a process named 'eld0.exe' residing in user-writable or temporary directories (e.g., Users, ProgramData, Temp, AppData). This behavior is characteristic of execution flow hijacking or malicious payload loading from suspicious file paths.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
001
Detects NSIS installer/archive contents bundling the specific unsigned/renamed UpdateAssistant.exe (aka AppUpdateHelper.exe) payload alongside its associated staged runtime DLLs and known malicious file paths/hashes used as cover noise for DLL sideloading staging
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
Detects NSIS installer/archive contents bundling the specific unsigned/renamed UpdateAssistant.exe (aka AppUpdateHelper.exe) payload alongside its associated staged runtime DLLs and known malicious file paths/hashes used as cover noise for DLL sideloading staging
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
001
Detects an HTTP GET request to 'dl.php' containing an 'f' parameter (target file) and an 'k' parameter (access token), followed by a response body starting with the 'MZ' header, indicating the successful download of a Windows PE executable as part of a potential phishing campaign stage-2 payload delivery.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
401
Detects an HTTP GET request to 'dl.php' containing an 'f' parameter (target file) and an 'k' parameter (access token), followed by a response body starting with the 'MZ' header, indicating the successful download of a Windows PE executable as part of a potential phishing campaign stage-2 payload delivery.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
101
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
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
Detects the malicious NFe-themed ZIP dropper MOTOROLA_MOB_COM_NFe_2026-07-16_21781624.zip by known hash and archive structure
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
Detects the malicious NFe-themed ZIP dropper MOTOROLA_MOB_COM_NFe_2026-07-16_21781624.zip by known hash and archive structure
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
Detects HVNC final payload masquerading as Windows Update Assistant, combining Firefox credential theft strings, hardcoded AV process names, and XOR-encoded C2 host configuration
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
001
Detects HVNC final payload masquerading as Windows Update Assistant, combining Firefox credential theft strings, hardcoded AV process names, and XOR-encoded C2 host configuration
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
001
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.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
001
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