Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
747 detections
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Detects the use of PowerShell to add Microsoft Defender exclusions (paths or extensions) where the process was initiated by or involves LockAppHost.exe. This behavior is indicative of an attempt to bypass security protections by excluding malicious artifacts from scanning.
Detects evidence of PowerShell AMSI (Antimalware Scan Interface) bypass attempts, including memory patching of amsiContext, usage of known malicious RC4 keys, or reflection-based tampering with AmsiUtils. These techniques are commonly used by attackers to disable AMSI scanning capabilities and execute malicious scripts undetected.
Detects evidence of PowerShell AMSI (Antimalware Scan Interface) bypass attempts, including memory patching of amsiContext, usage of known malicious RC4 keys, or reflection-based tampering with AmsiUtils. These techniques are commonly used by attackers to disable AMSI scanning capabilities and execute malicious scripts undetected.
Detects evidence of PowerShell AMSI (Antimalware Scan Interface) bypass attempts, including memory patching of amsiContext, usage of known malicious RC4 keys, or reflection-based tampering with AmsiUtils. These techniques are commonly used by attackers to disable AMSI scanning capabilities and execute malicious scripts undetected.
Detects modifications to the Windows Registry that disable Microsoft Defender Tamper Protection. Tamper Protection is a security feature that prevents malicious changes to security settings, including the disabling of antivirus and real-time monitoring.
Detects attempts to tamper with Microsoft Windows Defender configuration, specifically by modifying exclusion paths via PowerShell cmdlets (Add-MpPreference, Set-MpPreference), direct registry modifications, or forced Group Policy updates. It also monitors for the disabling of Tamper Protection via registry and the creation of scheduled tasks designed to apply Defender exclusions.
Detects attempts to modify, disable, or exclude paths and processes from Microsoft Defender Antivirus using legitimate administrative utilities such as PowerShell, cmd, sc, and netsh. This behavior is indicative of an adversary attempting to evade security monitoring.
Detects instances where a RedTail malware variant enumerates processes via the /proc filesystem to identify and terminate previous instances of itself using a kill signal.
Detects instances where a RedTail malware variant enumerates processes via the /proc filesystem to identify and terminate previous instances of itself using a kill signal.
Detects instances where a RedTail malware variant enumerates processes via the /proc filesystem to identify and terminate previous instances of itself using a kill signal.
Detects instances where a RedTail malware variant enumerates processes via the /proc filesystem to identify and terminate previous instances of itself using a kill signal.
Detects attempts to modify or disable the Windows Update service (wuauserv) using command-line utilities (sc.exe, cmd.exe, powershell.exe) in a context involving 'LockAppHost.exe'. This pattern is often associated with unauthorized attempts to tamper with security update mechanisms to prevent system patching.
Detects attempts to modify or disable the Windows Update service (wuauserv) using command-line utilities (sc.exe, cmd.exe, powershell.exe) in a context involving 'LockAppHost.exe'. This pattern is often associated with unauthorized attempts to tamper with security update mechanisms to prevent system patching.
Detects the use of 'schtasks.exe' to disable critical Windows Update or ExploitGuard Malware Removal tasks when initiated by 'LockAppHost.exe'. This behavior is highly irregular, as the LockAppHost process is typically associated with the Windows Lock Screen and should not be modifying security-related scheduled tasks.
This rule detects the use of the LockAppHost process to execute suspicious commands associated with tampering with security configurations, including Windows Defender settings, service management (sc.exe), and task scheduling. Adversaries may abuse this process to bypass security controls, disable real-time monitoring, or maintain persistence.
This rule monitors for modifications to the PostgreSQL configuration file 'pg_hba.conf', specifically looking for changes that would enable 'trust' authentication, followed by successful database logins using that method within one hour. This behavior is indicative of an attacker modifying authentication rules to gain unauthorized, passwordless access to a database.
This rule monitors for modifications to the PostgreSQL configuration file 'pg_hba.conf', specifically looking for changes that would enable 'trust' authentication, followed by successful database logins using that method within one hour. This behavior is indicative of an attacker modifying authentication rules to gain unauthorized, passwordless access to a database.
Detects modifications to the Windows Registry that disable Microsoft Defender Tamper Protection. Tamper Protection is a security feature that prevents malicious changes to security settings, including the disabling of antivirus and real-time monitoring.
Detects a sequence of commands characteristic of the Stealer/1.0 malware, involving the systematic disabling of security features including Windows Defender, Firewall, UAC, System Restore, Windows Recovery Environment, SafeBoot, and the deletion of Volume Shadow Copies as a precursor to destructive data operations.
Detects modifications to the PostgreSQL configuration file 'pg_hba.conf' closely followed by a reload command (via pg_ctl or postgres processes). This behavior is indicative of an attacker attempting to modify authentication or connection access controls for a database.
Detects modifications to the Windows Registry that disable Microsoft Defender Tamper Protection. Tamper Protection is a security feature that prevents malicious changes to security settings, including the disabling of antivirus and real-time monitoring.
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