Arnold Chan
@slazTrusted contributorCompletionist
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7,399 detections
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Detects execution of PowerShell.exe initiated by cplsupport.exe with hidden window styles and non-interactive, no-profile flags, which is often indicative of obfuscated command execution or malicious script activity.
Detects the modification or creation of the 'SealedConfig' value within the 'Software\synapse\Config' registry key, correlated with the deletion of a 'config.toml' file on the same device. This pattern may indicate an adversary tampering with Synapse software configuration or attempting to remove audit/configuration trails.
Detects network activity related to the Toy Ghouls 'matrix-bird-agent' backdoor. The rule identifies communication with the domain 'meet.element.tw' via TLS SNI and HTTP host headers, as well as specific Matrix API event types (m.bird.status, m.bird.metrics, m.bird.cmd_response) and references to 'panel-bot' within the HTTP request body, indicating potential command-and-control behavior.
Detects the creation of a WordPress administrator account within one hour of a recorded web request to a known web shell path (Mushr00w) or suspect plugin upload directory. This correlation is a high-fidelity indicator of post-exploitation persistence and administrative account hijacking.
Detects the creation, modification, or renaming of PHP files within the 'wp-content/uploads' directory of a WordPress installation. This pattern is commonly indicative of an attacker uploading a web shell to maintain persistence or execute arbitrary code on a compromised web server.
This rule detects high-volume, potentially automated POST requests to specific WordPress plugin endpoints (Super Forms and Elementor Pro) used for form submissions and file uploads. A high frequency of these requests from a single source within a short timeframe suggests active reconnaissance or exploitation attempts against these vulnerable components.
Detects outbound HTTP traffic originating from a WordPress host containing specific signatures associated with the Mushr00w Uploader webshell, indicating command-and-control communication or data exfiltration.
This rule identifies potentially compromised Entra ID accounts by correlating multiple suspicious behaviors within a 14-day window. It aggregates four specific indicators: successful authentication following repeated MFA failures, impossible travel (sign-ins from multiple countries within a short timeframe), unusual hour logons (00:00-05:00), and sign-ins flagged with medium/high risk or reported as compromised. The rule triggers when an account exhibits two or more of these distinct anomalous behaviors.
This rule correlates successful Microsoft 365 sign-in events with preceding network events involving identified NovaCookies AiTM phishing infrastructure (specifically targeting .vu domains or specific URL patterns). It triggers when a user successfully authenticates using MFA shortly after accessing a known phishing link, which is a strong indicator of an active AiTM session hijacking attempt.
Detects anomalous reuse of an authenticated Microsoft 365 session cookie shortly after a successful MFA-satisfied sign-in. The detection identifies scenarios where the subsequent access originates from a different IP address, device, or user agent without an intervening MFA challenge, which is a pattern indicative of session hijacking techniques like Adversary-in-the-Middle (AiTM) or session token replay.
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