Detections

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

311 detections

Detects instances where browser processes or related credential files are accessed or targeted by process termination (e.g., taskkill.exe) followed by attempts to access sensitive files like Login Data, logins.json, or key4.db. This pattern is indicative of credential theft from web browsers.
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Arnold Chan@slaz
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Detections.ai Community
1 month ago
001
This rule detects the potential bypassing of Protected Process Light (PPL) in Windows, characterized by kernel-mode driver activity (such as ObOpenObjectByPointer) correlated with the mass termination of security-related processes (e.g., Defender, CrowdStrike, SentinelOne). The correlation between driver-level object handle manipulation and the termination of protected security binaries is a strong indicator of an adversary attempting to disable EDR/AV protections via kernel exploitation or driver abuse.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
Detects the installation and loading of a suspicious driver named 'NvFsFilter' (nvfsflt64.sys), accompanied by registry persistence and suspicious process termination events. This pattern is characteristic of a 'kill-loop' persistence mechanism where malicious drivers or services repeatedly terminate security agents (AV/EDR) to maintain a persistent foothold on the endpoint.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
000
This rule detects potentially malicious activity involving the manipulation of Windows services using 'sc.exe' to stop or delete services, combined with the forceful termination of 'svchost.exe' processes via 'wmic.exe'. This pattern is often associated with adversaries attempting to disable security tools, logging agents, or other defensive mechanisms on an endpoint.
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Arnold Chan@slaz
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Hunters
2 months ago
004
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.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
1209
Detects the execution of taskkill.exe to forcibly terminate the iediagcmd.exe diagnostic process, initiated by the process GRrte.exe. This behavior is indicative of an attempt to impair security or diagnostic tools on the endpoint.
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Kaung Khant Ko@kaungkhantko
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Detections.ai Community
1 month ago
000
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.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
508
This rule detects potentially malicious activity where multiple critical processes (such as database engines or email clients) are terminated in a short time frame, correlated with a high volume of file creation or modification events on the same device. This behavior is indicative of destructive activity, such as ransomware encrypting data stores or disabling defensive software.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
2508
This rule detects the execution of a process named 'WhatssApp.exe' from a non-standard location ('C:\ProgramData\Drivers\Whatsapp\'), which is indicative of masquerading. It further correlates this activity with the prior termination of the legitimate 'whatsapp.exe' process within a 30-minute window, a pattern often associated with 'WhatsappCheker' or similar malicious tools designed to hijack legitimate application sessions.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
001
This rule detects the execution of a process named 'WhatssApp.exe' from a non-standard location ('C:\ProgramData\Drivers\Whatsapp\'), which is indicative of masquerading. It further correlates this activity with the prior termination of the legitimate 'whatsapp.exe' process within a 30-minute window, a pattern often associated with 'WhatsappCheker' or similar malicious tools designed to hijack legitimate application sessions.
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Arnold Chan@slaz
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Hunters
1 month ago
001
Detects suspicious modifications to browser 'Secure Preferences' files associated with known bypass techniques for extension integrity checks, coupled with browser process termination and subsequent relaunch using the --restore-last-session flag. This pattern is consistent with adversary activity attempting to inject malicious browser extensions by manipulating browser configuration files.
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Thiru N@Iamthiru
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Detections.ai Community
2 months ago
106
This rule detects the loading of specific drivers identified as potentially associated with security software evasion or 'Bring Your Own Vulnerable Driver' (BYOVD) tactics, followed by suspicious process termination activity (e.g., termination of security-related processes or system-critical process activity) within a 15-minute window on the same device.
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Ankit Mehta@Secvyn
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Detections.ai Community
1 month ago
000
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.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
006
Detects instances where browser processes or related credential files are accessed or targeted by process termination (e.g., taskkill.exe) followed by attempts to access sensitive files like Login Data, logins.json, or key4.db. This pattern is indicative of credential theft from web browsers.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects instances where browser processes or related credential files are accessed or targeted by process termination (e.g., taskkill.exe) followed by attempts to access sensitive files like Login Data, logins.json, or key4.db. This pattern is indicative of credential theft from web browsers.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
Detects rapid, repeated execution of process control utilities (kill, strace, inotifywait, timeout) directed at monitored processes, often used by malware (such as 'redtail') to disable security monitoring, debugging, or auditing tools on Linux systems.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
003
Detects instances where the ESET Remote Administrator Agent (ERAAgent.exe) terminates shortly after loading the Data Protection API service (dpapisvc.dll). This pattern may indicate an attempt to interact with or disrupt DPAPI services, potentially to facilitate credential dumping or sensitive data access.
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Arnold Chan@slaz
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Hunters
2 months ago
002
This rule detects potential cryptocurrency mining activity where known miner executables (specifically XMRig) or malicious scripts/processes are masquerading as or being spawned by 'LockAppHost.exe' or 'LockAppHost14a02b.exe'. It also monitors for subsequent attempts by these processes to terminate security-related tasks or establish persistence via registry run keys.
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Arnold Chan@slaz
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Hunters
2 months ago
002
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.
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Arnold Chan@slaz
Defender - KQL
2 months ago
305
This rule detects attempts to disable, terminate, or misconfigure security software, including antivirus, EDR, and endpoint protection solutions, by monitoring the execution of system administration binaries (such as taskkill, net, sc, wmic, powershell) with command-line arguments indicating service or process stopping, deletion, or configuration changes related to security-specific product names.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
203
Detects rapid, repeated execution of process control utilities (kill, strace, inotifywait, timeout) directed at monitored processes, often used by malware (such as 'redtail') to disable security monitoring, debugging, or auditing tools on Linux systems.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
002
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