Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
896 detections
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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 the use of PowerShell, pwsh, or cmd to execute the 'Add-MpPreference' command with the '-ExclusionPath' parameter, specifically targeting common directories like Telegram Desktop or specific system directories. This activity suggests an attempt to bypass security scanning by excluding known malicious locations or folders from Microsoft Defender's real-time monitoring.
Detects the use of PowerShell, pwsh, or cmd to execute the 'Add-MpPreference' command with the '-ExclusionPath' parameter, specifically targeting common directories like Telegram Desktop or specific system directories. This activity suggests an attempt to bypass security scanning by excluding known malicious locations or folders from Microsoft Defender's real-time monitoring.
Detects the use of PowerShell, pwsh, or cmd to execute the 'Add-MpPreference' command with the '-ExclusionPath' parameter, specifically targeting common directories like Telegram Desktop or specific system directories. This activity suggests an attempt to bypass security scanning by excluding known malicious locations or folders from Microsoft Defender's real-time monitoring.
Matches known Phantom Stealer MaaS infostealer sample hashes
Detects a Delphi-compiled Windows Screen Saver (.scr) file acting as a dropper. The binary contains embedded RCDATA ZIP resources and utilizes Persian-language filenames related to academic or student-focused lures to trick victims into execution. This rule specifically identifies the presence of the dropper's strings and the Borland Delphi marker.
Detects the use of PowerShell, pwsh, or cmd to execute the 'Add-MpPreference' command with the '-ExclusionPath' parameter, specifically targeting common directories like Telegram Desktop or specific system directories. This activity suggests an attempt to bypass security scanning by excluding known malicious locations or folders from Microsoft Defender's real-time monitoring.
Matches known Phantom Stealer MaaS infostealer sample hashes
Matches known Phantom Stealer MaaS infostealer sample hashes
Detects command-line activity associated with Monkey ransomware, specifically attempts to bypass AMSI (patching AmsiScanBuffer, targeting AmsiUtils), disable ETW (Event Tracing for Windows) monitoring, and add Microsoft Defender exclusions to evade detection prior to encryption.
Detects the execution of common Windows command-line tools (such as cmd, powershell, or wmic) being used to query system information related to security configurations, antivirus status, firewall status, or installed security products. This behavior is indicative of an adversary performing reconnaissance to understand the defensive landscape of a compromised host.
Detects Mimikatz binary or in-memory module used for credential harvesting following PaperCut RCE exploitation
Detects NeedleStealer Rust-based stealer binaries via Go module path strings, C2 domain, build tag, and embedded browser wallet extension identifiers
This rule detects potential attempts to tamper with or bypass Windows Defender by monitoring for files or processes named 'ShieldCrash' occurring in close temporal proximity to the creation or modification of files within Windows Defender's shadow or scan directories (BaseNamedObjects\Restricted\WD_SHADOW_ or WD_SCAN). This behavior is often associated with malware attempting to evade security detection.
Detects the ShieldCrash CVE-2026-69414 exploit PoC binary/PDB via multiple corroborating distinguishing strings and file size
This rule detects potential attempts to tamper with or bypass Windows Defender by monitoring for files or processes named 'ShieldCrash' occurring in close temporal proximity to the creation or modification of files within Windows Defender's shadow or scan directories (BaseNamedObjects\Restricted\WD_SHADOW_ or WD_SCAN). This behavior is often associated with malware attempting to evade security detection.
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 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.
This rule detects potential attempts to tamper with or bypass Windows Defender by monitoring for files or processes named 'ShieldCrash' occurring in close temporal proximity to the creation or modification of files within Windows Defender's shadow or scan directories (BaseNamedObjects\Restricted\WD_SHADOW_ or WD_SCAN). This behavior is often associated with malware attempting to evade security detection.
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.
Detects the use of PowerShell, pwsh, or cmd to execute the 'Add-MpPreference' command with the '-ExclusionPath' parameter, specifically targeting common directories like Telegram Desktop or specific system directories. This activity suggests an attempt to bypass security scanning by excluding known malicious locations or folders from Microsoft Defender's real-time monitoring.
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