SigmaHQ Detections
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6,800 detections
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Detects the installation of services associated with various legitimate remote access tools. Threat actors commonly abuse these tools for persistence, privilege escalation, and remote control of compromised systems.
Detects successful AWS console logins that were performed without Multi-Factor Authentication (MFA). This alert can be used to identify potential unauthorized access attempts, as logging in without MFA can indicate compromised credentials or misconfigured security settings.
This rule detects PowerShell scripts attempting to perform keylogging. It specifically looks for the string 'Get-Keystrokes' which is often associated with keylogging scripts, or a combination of 'Get-ProcAddress user32.dll GetAsyncKeyState' and 'Get-ProcAddress user32.dll GetForegroundWindow' which are API calls commonly used in PowerShell keyloggers to capture keyboard input and determine the active window.
Detects potential malicious modification of the 'IsCredGuardEnabled' property value within the WDigest registry key to disable Credential Guard on a system. This action is often performed in conjunction with 'UseLogonCredential' to manipulate credential caching, potentially leading to credential dumping.
Detects AWS console logins from countries and IP addresses that are not recognized as legitimate for the organization. This alert can help identify potential unauthorized access attempts from unusual locations, which may indicate compromised credentials or malicious activity.
Detects known malicious service installations associated with Cobalt Strike beacons, often used for privilege escalation or lateral movement. The rule specifically looks for patterns in the ServiceFileName field of Windows Security Event ID 4697, such as the presence of 'ADMIN$' and '.exe', '%COMSPEC%', 'start', and 'powershell', or encoded PowerShell commands often used by Cobalt Strike.
This rule detects the execution of TruffleHog, a tool designed to find secrets in various platforms such as Git, GitHub, Jira, Slack, Confluence, SharePoint, Docker images, and cloud storage services like S3 and GCS. While TruffleHog is a legitimate tool often used in CI pipelines and security assessments, its execution can also indicate malicious activity, as observed in the Shai-Hulud malware campaign targeting npm packages to steal sensitive information. The rule triggers on either the image name ending with '/trufflehog' or a combination of command-line arguments indicating its use to scan specific platforms and the '--results=verified' flag.
This rule detects attempts to read or retrieve BitLocker recovery keys from Azure audit logs. This activity can be indicative of an attacker attempting to gain access to encrypted data on compromised devices or to bypass disk encryption for persistence or defense evasion.
Detects the installation of a PDQDeploy service on a target system. When a package is deployed via PDQDeploy, it installs a remote service named "PDQDeployRunner-X" (where X is an integer) on the target machine.
Detects the loading of known malicious drivers by their MD5, SHA1, SHA256, or IMPHASH. These drivers are often used by adversaries for persistence and privilege escalation, particularly in 'Bring Your Own Vulnerable Driver' (BYOVD) attacks to gain kernel-level access.
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