Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the execution of mshta.exe with command-line arguments that indicate the execution of JavaScript or VBScript code, often used for malicious purposes such as bypassing application whitelisting or executing remote code.
Detects multiple registry value set events where the registry value data contains keywords like 'ransom' or 'payment', or the registry key contains 'Run'. This behavior can indicate ransomware activity attempting to establish persistence or communicate its demands.
This rule detects the creation or modification of executable files (.exe, .dll, .sys) within critical Windows system directories (C:\Windows\System32\ or C:\Windows\SysWOW64\). Such activity can indicate an attempt to establish persistence, elevate privileges, or inject malicious code into legitimate system processes.
This rule detects suspicious Azure AD sign-in activity where a user successfully signs in from multiple unusual cities within a 24-hour period. It specifically looks for sign-ins that are not from a trusted network and are not from a compliant device, aggregating successful sign-ins by UserPrincipalName and IpAddress, and flagging if there are 5 or more distinct cities.
This rule detects potential abuse of Group Policy Objects (GPOs) by identifying multiple changes (3 or more) to GPO-related objects within a short timeframe. It specifically looks for Event ID 5136 (Directory Service Changes) where the ObjectClass is either 'groupPolicyContainer' or 'gPCFileSysPath'. This could indicate an adversary modifying GPOs to achieve persistence, privilege escalation, or other malicious objectives.
This rule detects an unusual number of software uninstall activities on a system within a one-hour window. It specifically looks for command lines containing 'uninstall' or 'remove' along with 'KB' (Knowledge Base update) or 'package', which could indicate an attempt to remove security updates or other software.
Detects SPECTRALVIPER malware attempting process injection into OneDrive.Sync.Services.exe by monitoring for specific sideloading chains (IntelAudioService.exe, Genuine.exe, Updater.exe, AutoCad242.exe) and cross-process indicators like handle access with write permissions or remote thread creation.
Detects the use of BITSAdmin to create or modify background intelligent transfer jobs. Attackers often abuse BITSAdmin to download malicious payloads (ingress tool transfer) or to execute commands when a transfer job completes or errors, which can be leveraged for persistence or arbitrary code execution.
Detects the use of regsvr32.exe with the /s (silent) and /u (unregister) flags to execute a remote scriptlet file (e.g., .sct, scrobj.dll) via HTTP, a common technique for proxy execution and bypassing application control mechanisms.
Detects the use of BITSAdmin to create or modify background intelligent transfer jobs. Attackers often abuse BITSAdmin to download malicious payloads (ingress tool transfer) or to execute commands when a transfer job completes or errors, which can be leveraged for persistence or arbitrary code execution.
Detects process execution patterns associated with OceanLotus (APT32) SPECTRALVIPER sideloading chains. The rule identifies suspicious executables by name (masquerading), specific command-line flags ('-uiDll'), execution from known staging directories, or binaries using spoofed vendor metadata with invalid or absent digital signatures.
Detects execution of mshta.exe with command line arguments containing web-related indicators (http) or scripting engines (vbscript, javascript). This behavior is characteristic of adversaries using mshta.exe as a proxy to execute remote malicious payloads or inline scripts, effectively bypassing application controls and browser security contexts.
Detects the execution of 'runas.exe' with the '/savecred' or '/netonly' parameters. The '/savecred' parameter allows the use of credentials previously stored in the credential manager, while '/netonly' allows the use of credentials for remote network resources without authenticating locally. Both flags can be abused by adversaries to persist or move laterally with compromised or cached credentials while evading local authentication monitoring. The rule excludes common system-signed processes originating from the Windows System32 directory.
Detects the execution of rundll32.exe with command-line arguments typically used for proxy execution of scripts or malicious DLL functions (javascript:, vbscript:, ShellExec_RunDLL, LaunchINFSection), which is a common technique used by attackers to bypass security controls and execute arbitrary code, excluding instances involving comsvcs.dll.
Detects execution of a process named 'IntelAudioService.exe' located in a user-specific subdirectory under 'IntelAudio\Service\'. This pattern is frequently used by adversaries to masquerade malicious activity by mimicking the naming convention of legitimate Intel audio drivers while executing from non-standard locations.
This rule detects various indicators of DLL sideloading and process masquerading often associated with threat actor campaigns such as OceanLotus (APT32) and other malicious installers (FireAnt MetaKit). It monitors for specific DLL loads by unsigned or unexpected processes, the execution of masqueraded binaries, and suspicious command-line patterns used to stage malicious payloads.
Detects SPECTRALVIPER lateral movement activity utilizing the XGU Pivot Shadow technique. The rule monitors for named pipe creation or connection events involving specific host processes (IntelAudioService.exe and OneDrive.Sync.Services.exe) used to orchestrate inter-instance command and control distribution. It also flags potential sideloading behavior where IntelAudioService.exe is executed from an anomalous path within the user profile.
Detects network traffic over SMB targeting the SYSVOL or NETLOGON network shares that includes the transfer or reference of common executable file extensions. This behavior is indicative of an adversary attempting to stage malicious payloads for deployment via Group Policy Objects (GPOs), a common method for lateral movement and persistence.
Detects a suspicious parent-child process relationship where IntelAudioService.exe spawns OneDrive.Sync.Services.exe or OneDrive.Sync.Service.exe. This activity is indicative of the SPECTRALVIPER backdoor injection utilized by the OceanLotus (APT32) group, specifically documented in their Blazing Furnace campaign, which leverages a DLL sideloading chain involving DtlCrashCatch.dll.
Detects a suspicious parent-child process relationship where IntelAudioService.exe spawns OneDrive.Sync.Services.exe or OneDrive.Sync.Service.exe. This activity is indicative of the SPECTRALVIPER backdoor injection utilized by the OceanLotus (APT32) group, specifically documented in their Blazing Furnace campaign, which leverages a DLL sideloading chain involving DtlCrashCatch.dll.
Detects instances where the ConfigurationRemotingServer.exe process spawns tools like schtasks.exe, powershell.exe, or pwsh.exe to create a scheduled task. This behavior is indicative of an attacker abusing the WinGet configuration management (DSC) engine, specifically via the 'winget configure' mechanism, to establish persistence by triggering the creation of a new scheduled task through a DSC script resource.
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