Detections

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

40,063 detections

This rule detects potential PowerShell script execution without spawning the standard powershell.exe process. It monitors for the loading of clr.dll and System.Management.Automation.dll into any process other than powershell.exe, which is a technique used by some malware families like SloppyRAT to execute PowerShell code directly within a compromised process memory space.
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Ibrahim Saud@tektrix
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Detections.ai Community
2 months ago
006
This rule monitors for network connections to known malicious domains or IP addresses, and for the presence or execution of files with known malicious file hashes (MD5, SHA1, SHA256). It consolidates detections from network traffic, file events, and process execution logs over a 30-day lookback period.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
102
This rule monitors for network connections to known malicious domains or IP addresses, and for the presence or execution of files with known malicious file hashes (MD5, SHA1, SHA256). It consolidates detections from network traffic, file events, and process execution logs over a 30-day lookback period.
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Arnold Chan@slaz
Defender - KQL
1 month ago
002
This rule monitors for network connections to known malicious domains or IP addresses, and for the presence or execution of files with known malicious file hashes (MD5, SHA1, SHA256). It consolidates detections from network traffic, file events, and process execution logs over a 30-day lookback period.
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Arnold Chan@slaz
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Hunters
1 month ago
002
Detects network connection attempts to known typosquatted domains (thecovnresation.com/net) commonly associated with the CLEANGULP malware beaconing activity, specifically targeting the /beacon/pre-register URI path.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
002
Detects network connection attempts to known typosquatted domains (thecovnresation.com/net) commonly associated with the CLEANGULP malware beaconing activity, specifically targeting the /beacon/pre-register URI path.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
002
Detects the execution of MicrosoftIME.exe or the creation of scheduled tasks referencing it from non-standard directories such as User, Temp, or AppData folders. This behavior is indicative of masquerading or persistence mechanisms where a malicious process mimics the legitimate Microsoft Input Method Editor (IME) binary.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
002
Detects the execution of MicrosoftIME.exe or the creation of scheduled tasks referencing it from non-standard directories such as User, Temp, or AppData folders. This behavior is indicative of masquerading or persistence mechanisms where a malicious process mimics the legitimate Microsoft Input Method Editor (IME) binary.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
002
Detects the execution of MicrosoftIME.exe or the creation of scheduled tasks referencing it from non-standard directories such as User, Temp, or AppData folders. This behavior is indicative of masquerading or persistence mechanisms where a malicious process mimics the legitimate Microsoft Input Method Editor (IME) binary.
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Arnold Chan@slaz
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Hunters
1 month ago
002
Detects the execution of command interpreters or scripting engines spawned by the ManageEngine ADSelfService Plus GINA client process (typically present at the Windows logon screen). This activity is highly suspicious as it indicates potential command injection or abuse of a pre-authentication component running at SYSTEM privileges.
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Ankit Mehta@Secvyn
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SlimKQL
1 month ago
002
Detects suspicious post-exploitation activities, including service creation, local account modification, or security tool tampering, executed as SYSTEM shortly after activity associated with the ADSelfService Plus GINA logon-screen vulnerability (CVE-2026-74849).
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Ankit Mehta@Secvyn
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SlimKQL
1 month ago
002
Detects suspicious post-exploitation activities, including service creation, local account modification, or security tool tampering, executed as SYSTEM shortly after activity associated with the ADSelfService Plus GINA logon-screen vulnerability (CVE-2026-74849).
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Ankit Mehta@Secvyn
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Hunters
1 month ago
002
Detects suspicious post-exploitation activities, including service creation, local account modification, or security tool tampering, executed as SYSTEM shortly after activity associated with the ADSelfService Plus GINA logon-screen vulnerability (CVE-2026-74849).
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
002
Detects the obfuscated first-stage JavaScript payload sharedLoad.min.js dropped by the malicious npm indexed-btree package, identified by string-array encoding and self-checksumming array rotation obfuscation patterns
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
004
Detects the indexed-btree npm malware loader embedded in BTree.prototype.set that spawns a detached hidden Node.js child process and references sharedLoad.min.js
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
Detects the execution of npm commands to install specific, potentially malicious or typo-squatted npm packages. The rule filters for common npm install command line arguments and matches against a predefined list of package names that are often associated with supply chain compromise attempts.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
Detects the execution of npm commands to install specific, potentially malicious or typo-squatted npm packages. The rule filters for common npm install command line arguments and matches against a predefined list of package names that are often associated with supply chain compromise attempts.
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Arnold Chan@slaz
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Hunters
2 months ago
004
This rule detects potentially malicious child processes spawned by Node.js. It specifically monitors for scenarios where a Node.js process executes a detached child process using standard library options ('detached', 'stdio', 'windowsHide', 'ignore'), which is a common technique used by malware to run background tasks while remaining hidden from the parent process terminal. The rule excludes common benign development, build, and process management tools to reduce false positives.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
004
This rule detects instances where a Node.js process spawns a child Node.js process from a 'node_modules' directory using configuration flags typically associated with hidden, detached background tasks (e.g., 'detached', 'stdio', 'windowsHide', 'ignore'). It explicitly excludes common Node.js process managers and build tools to reduce false positives associated with legitimate development activities.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
This rule detects instances where a Node.js process spawns a child Node.js process from a 'node_modules' directory using configuration flags typically associated with hidden, detached background tasks (e.g., 'detached', 'stdio', 'windowsHide', 'ignore'). It explicitly excludes common Node.js process managers and build tools to reduce false positives associated with legitimate development activities.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
104
This rule detects potential exploitation attempts targeting vulnerabilities within the libheif image processing library. It monitors for image processing binaries (e.g., convert, magick) executing with command-line arguments related to HEIF/HEIC files, followed by multiple application crash events (SIGSEGV, coredumps) associated with libheif on the same device within a short time window.
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Arnold Chan@slaz
Defender - KQL
2 months ago
106
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