Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
18,128 detections
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Detects the execution of cmstp.exe with the '/s' flag, which indicates a silent installation. This behavior is often abused by adversaries to proxy execution of malicious code, bypass application control, or bypass User Account Control (UAC).
Detects modification of AWS organizational units to evade policy controls
Detects disabling of AWS CloudTrail audit logging
Detects PowerShell running base64 encoded commands
Detects Linux ptrace system call abuse for process injection
Detects executables whose Original File Name metadata differs from the actual filename on disk, which may indicate renamed Living-off-the-Land Binaries (LOLBINs) or attacker tools attempting to evade security controls. The rule specifically looks for a predefined list of known LOLBINs and trusted tools.
This rule detects potential direct send email spoofing attempts where an email fails SPF, DKIM, and DMARC authentication checks, but passes Composite Authentication (CompAuth). Additionally, it looks for emails where the sender's local part (username before the @) matches the recipient's local part, suggesting an attempt to impersonate an internal user. The rule also filters out emails that were blocked and those sent via internal connectors, focusing on external spoofing attempts. It further excludes emails originating from specific countries (New Zealand, Australia) which can be customized.
This detection identifies when an email that contains a URL associated with a known Remote Monitoring and Management (RMM) tool was sent and subsequently clicked by the intended recipient or the original sender. The domain is not part of the organization's approved RMM solutions, indicating a potential use of Living-off-the-Land RMM (LOLRMM) techniques often employed in initial access or persistence stages by threat actors.
This activity may reflect attempted remote access, lateral movement, or data collection through unauthorized RMM deployment.
This activity may reflect attempted remote access, lateral movement, or data collection through unauthorized RMM deployment.
Detects NTFS ADS used to hide malicious payloads from standard directory listings
Detects creation of setuid binaries used for Linux privilege escalation
Detects SMB NTLM relay attacks used for credential capture and lateral movement
Detects failed attempts to change the system audit policy. This could indicate an adversary attempting to disable or modify security monitoring to evade detection.
This rule detects an unusually high volume of file deletion events on a device within a short time frame (100 or more files deleted within a 5-minute window). This activity can be indicative of malicious behaviors such as ransomware encrypting and deleting original files, data wiping attacks, or an adversary attempting to remove forensic evidence by deleting logs or other critical files.
Detects abuse of legitimate Windows binary AgentExecutor.exe, executing powershell scripts. Correlation rule
Detects the creation or modification of a scheduled task named 'OneDrive Update', which is known to be used by the BLUERABBIT backdoor for persistence. The rule looks for Windows Security Events (EventID 4698 for task creation, 4702 for task modification) and process execution events where command lines contain 'OneDrive Update' along with scheduled task registration utilities like 'Register-ScheduledTask', 'New-ScheduledTask', or 'schtasks'.
Detects access to the Intune admin portal from devices that are not marked as compliant or lack a device ID. This may indicate potential credential theft, session replay from unmanaged infrastructure, or AiTM phishing proxies bypassing basic MFA.
Detects the creation of a new Global Administrator or Company Administrator account in Microsoft Entra ID (formerly Azure Active Directory). Adversaries may escalate privileges from compromised MDM administration roles (like Intune) to Entra ID Global Admin to cement full control over the tenant.
LOLBAS shell32
S1QL
This rule detects the execution of `rundll32.exe` with `shell32.dll` that subsequently launches `cmd.exe`. This behavior is often associated with adversaries using `rundll32.exe` as a proxy to execute commands, specifically leveraging `shell32.dll` to invoke `cmd.exe`. The rule includes several exclusions to reduce false positives, such as legitimate `msiexec.exe` parent processes, specific `RunDLL` commands, and `autorun.bat` related activities.
Detects disabling of Windows Defender through registry modifications
Detects use of Forfiles for indirect command execution to evade detection
Detects compilation of delivered source code payloads to evade file-based detection
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