Detections

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

1,748 detections

This rule monitors for the connection of specific KVM-over-IP hardware devices (e.g., PiKVM, Guermok) which can be used by an adversary to gain remote access to a system's physical keyboard, video, and mouse interface, effectively bypassing software-based security controls.
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Arnold Chan@slaz
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Hunters
2 months ago
402
Detects rapid, repeated invocation of Microsoft Defender remediation processes (mpcmdrun.exe, MsMpEng.exe) occurring in conjunction with suspicious file write or rename operations in System32. This pattern is characteristic of a Time-of-Check to Time-of-Use (TOCTOU) race condition, where an attacker attempts to exploit the timing gap between Defender's detection and remediation actions to replace a file with a malicious version.
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Arnold Chan@slaz
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Hunters
2 months ago
102
Detects modifications or creation of InprocServer32 COM registry keys by suspicious processes like mshta.exe or powershell.exe, which is indicative of COM Hijacking for persistence or privilege escalation.
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Arnold Chan@slaz
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Hunters
2 months ago
002
This rule detects potential reflective code injection or in-memory loading (fileless) where a DLL or PE image is loaded by mshta.exe or powershell.exe, but the module load event lacks a valid file path on disk (or indicates a device path). This behavior is often associated with the execution of malicious payloads such as the Amatera loader, where payloads are executed directly in memory to evade file-based security detections.
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Arnold Chan@slaz
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Hunters
2 months ago
002
Detects when a Node.js process initiates a low-level keyboard hook (WH_KEYBOARD_LL or WH_KEYBOARD) while running from common user-writable directories, which may indicate malicious keylogging activity by a suspicious process.
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Arnold Chan@slaz
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Hunters
2 months ago
002
This rule detects the process 'ShieldCrash.exe' accessing or interacting with the Windows ELAM (Early Launch Anti-Malware) configuration directory. ELAM drivers are critical components for secure boot and early malware detection; unauthorized access or manipulation by unknown processes may indicate an attempt to tamper with security tools or evade endpoint protection.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
205
Detects rapid, repeated invocation of Microsoft Defender remediation processes (mpcmdrun.exe, MsMpEng.exe) occurring in conjunction with suspicious file write or rename operations in System32. This pattern is characteristic of a Time-of-Check to Time-of-Use (TOCTOU) race condition, where an attacker attempts to exploit the timing gap between Defender's detection and remediation actions to replace a file with a malicious version.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
308
Detects a suspicious process injection chain (OpenProcess, VirtualAllocEx, WriteProcessMemory, CreateRemoteThread) targeting the Windows Character Map utility (charmap.exe) located within the SysWOW64 directory. This activity is often used by adversaries to execute malicious code within a legitimate, signed process context to evade security monitoring.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
001
Detects the reflective or in-memory loading of the AsyncRAT DLL (Veukuzmw.dll) into the memory space of the legitimate Windows process charmap.exe, characterized by a lack of corresponding disk activity or suspicious process command-line arguments.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
101
Detects instances where a browser process (chrome.exe) accesses the microphone or camera within a 2-minute temporal window of communicating with 'gemini.google.com'. This rule is intended to identify potential unauthorized use of system peripherals in the context of an AI-agent session.
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Arnold Chan@slaz
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Midnight Slayer
1 month ago
000
Detects instances where a browser process (chrome.exe) accesses the microphone or camera within a 2-minute temporal window of communicating with 'gemini.google.com'. This rule is intended to identify potential unauthorized use of system peripherals in the context of an AI-agent session.
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Arnold Chan@slaz
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Detection & Hunting Community
1 month ago
000
This rule monitors for file and process events involving 'pubspec.yaml' configuration files or specific Flutter-related components such as 'universal_file_viewer' and 'surveyjs_flutter'. This detection logic is designed to track development activities or the inclusion of specific software packages within a Flutter project environment.
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Nate Dunning@nateossprey
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Ossprey Open Source Supply Chain Detections
2 months ago
105
This rule detects attempts by users to disable or clear command line history logs for shell environments, including PowerShell (e.g., modifying PSReadLine history) and Unix-like shells (e.g., unset HISTFILE, setting HISTSIZE to 0, or disabling history collection). Such actions are frequently performed by adversaries to hinder incident response and forensic analysis by obscuring their post-exploitation activity.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
006
This rule detects potentially malicious activity involving the modification of Excel macro security settings (specifically VBAWarnings or AccessVBOM) or the creation of autorun.inf files on removable drives. It identifies these behaviors when they coincide with the execution of Synaptics.exe within a 30-minute window, suggesting a potential correlation between local administrative tasks and malicious document-based payloads or portable drive staging.
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Ankit Mehta@Secvyn
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Detections.ai Community
2 months ago
102
Detects processes attempting to access sensitive Linux system files (/etc/passwd or /etc/shadow) that are not typically associated with system administration, security, or identity management tasks. This behavior may indicate an attempt by an unauthorized user or process to gather credentials or system configuration information.
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Shadows VMB@Vemorian_Mort
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Detections.ai Community
2 months ago
109
Detects attempts to access or create copies of the Active Directory 'ntds.dit' database or the Windows Security Account Manager (SAM) registry hive using unauthorized processes. Attackers often target these files to extract credential hashes from Domain Controllers or local systems.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
006
Detects anomalous clipboard activity where content is repeatedly replaced by cryptocurrency wallet address patterns (Bitcoin or Ethereum) within a short timeframe. This behavior is indicative of clipboard hijacking (clipjacking), a technique used by malware like EggJagger to substitute legitimate payment addresses with attacker-controlled addresses.
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Arnold Chan@slaz
Defender - KQL
2 months ago
002
Detects anomalous clipboard activity where content is repeatedly replaced by cryptocurrency wallet address patterns (Bitcoin or Ethereum) within a short timeframe. This behavior is indicative of clipboard hijacking (clipjacking), a technique used by malware like EggJagger to substitute legitimate payment addresses with attacker-controlled addresses.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
002
This rule detects behavior associated with Hidden Virtual Network Computing (HVNC) implants, which allow remote attackers to interact with a hidden desktop session on a compromised host. The rule specifically looks for processes that perform a sequence of sensitive Windows API calls—CreateDesktopA, SetThreadDesktop, BitBlt/GetDIBits (for screen capture), and SendInput (for input simulation)—when originating from suspicious, unsigned, or non-standard file paths, indicating potential malicious use rather than legitimate software.
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Arnold Chan@slaz
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Midnight Slayer
2 months ago
004
Detects attempts to access or create copies of the Active Directory 'ntds.dit' database or the Windows Security Account Manager (SAM) registry hive using unauthorized processes. Attackers often target these files to extract credential hashes from Domain Controllers or local systems.
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Arnold Chan@slaz
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Detections.ai Community
2 months ago
005
Detects attempts to access or create copies of the Active Directory 'ntds.dit' database or the Windows Security Account Manager (SAM) registry hive using unauthorized processes. Attackers often target these files to extract credential hashes from Domain Controllers or local systems.
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Arnold Chan@slaz
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Detection & Hunting Community
2 months ago
105
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