Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
747 detections
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Detects a sequence of suspicious activities on a Windows host aimed at inhibiting system recovery, such as deleting shadow copies, modifying boot recovery configurations, deleting backup catalogs, or stopping security and backup-related services. This rule aggregates distinct categories of these actions by DeviceId and Account to identify potential malicious intent characteristic of ransomware or data destructive attacks.
Detects EDRKiller.exe or WarsawKiller.exe binaries and the associated wsftprm.sys BYOVD driver used by The Gentlemen threat actor to terminate security product processes
This rule detects attempts to disable or tamper with Microsoft Defender security features by monitoring for unauthorized modifications to specific registry keys (DisableAntiSpyware, DisableRealtimeMonitoring, or the WinDefend service start type) in conjunction with related process execution activity (e.g., PowerShell, cmd, reg, or MpCmdRun) that includes keywords associated with defender configuration changes.
Detects the use of PowerShell to modify Microsoft Defender preferences by adding exclusion paths, processes, or extensions shortly after the creation of Registry Run keys. This sequence is characteristic of post-exploitation activity where an adversary establishes persistence and subsequently attempts to neutralize security software monitoring of their malicious payloads to avoid detection during future execution.
This rule detects activities associated with the MacSync backdoor, specifically focusing on persistence mechanisms such as LaunchAgent manipulation, .repair-run scripts, and suspicious GIT hook usage. It also correlates these events with the termination of macOS notification agents (BTMNotificationAgent, NotificationCenter, BackgroundTaskManagementAgent), which is a tactic used to suppress security alerts during malicious operations.
This rule detects activities associated with the MacSync backdoor, specifically focusing on persistence mechanisms such as LaunchAgent manipulation, .repair-run scripts, and suspicious GIT hook usage. It also correlates these events with the termination of macOS notification agents (BTMNotificationAgent, NotificationCenter, BackgroundTaskManagementAgent), which is a tactic used to suppress security alerts during malicious operations.
This rule detects activities associated with the MacSync backdoor, specifically focusing on persistence mechanisms such as LaunchAgent manipulation, .repair-run scripts, and suspicious GIT hook usage. It also correlates these events with the termination of macOS notification agents (BTMNotificationAgent, NotificationCenter, BackgroundTaskManagementAgent), which is a tactic used to suppress security alerts during malicious operations.
Detects the ClosedQuorum 'unhook' evasion technique where a process patches ntdll's EtwEventWrite to suppress ETW telemetry, occurring within a 5-minute window of the same process initiating outbound network connections to known LLM C2 provider APIs or Discord webhooks used for AI-arbitrated decision cycles.
Detects a scenario where a single initiating process terminates multiple distinct processes within a short timeframe (5 minutes). This behavioral pattern is often associated with security tool tampering or EDR-evasion techniques where malicious code attempts to identify and terminate defensive security processes.
Detects attempts to modify AMSI (Antimalware Scan Interface) provider registry keys or tampering with the amsi.dll file. These actions are indicative of efforts to disable or blind security instrumentation, often as a precursor to or during malicious code execution.
Detects attempts to disable or tamper with Microsoft Windows Defender via registry modifications or malicious PowerShell/reg.exe commands, specifically targeting security settings like DisableAntiSpyware, DisableRealtimeMonitoring, and exclusion paths.
Detects attempts to disable or tamper with Microsoft Windows Defender via registry modifications or malicious PowerShell/reg.exe commands, specifically targeting security settings like DisableAntiSpyware, DisableRealtimeMonitoring, and exclusion paths.
Detects attempts to disable or tamper with Microsoft Windows Defender via registry modifications or malicious PowerShell/reg.exe commands, specifically targeting security settings like DisableAntiSpyware, DisableRealtimeMonitoring, and exclusion paths.
Detects the execution of BTR_CLI.exe with cleanup parameters that correlate with the deletion of specific registry keys (services) and related file artifacts (e.g., .dat or changelist files) within a short time window. This pattern is indicative of a post-compromise cleanup routine aimed at removing traces of malicious services or payloads.
Detects a suspicious sequence of activity involving persistence via Registry Run keys (specifically targeting SMQDService or winappx entries) followed by modifications to Microsoft Defender configuration (adding exclusions via PowerShell) within a two-hour window on the same device.
Detects attempts to modify, disable, or query Microsoft Defender configuration settings or status using legitimate Windows management tools (PowerShell/WMI) by processes other than authorized Defender executables (MsMpEng.exe, MpCmdRun.exe).
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).
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).
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).
Detects the mass termination of security, backup, database, and virtualization services and processes. The rule monitors for the use of 'taskkill', 'sc', and 'net stop' commands, targeting a list of processes and services often associated with pre-encryption cleanup activities by ransomware actors to neutralize security tools and data access controls.
Detects attempts to bypass the Antimalware Scan Interface (AMSI) in PowerShell by using reflection to modify the 'amsiInitFailed' field within the 'AmsiUtils' class. This technique is commonly used by malicious scripts to disable AMSI scanning during their execution.
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