Arnold Chan
@slazTrusted contributorCompletionist
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7,399 detections
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910
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4,111
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660
658
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991
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Detects the invocation of the AppInstaller executable to install .msix packages, often used in software installation or malicious delivery scenarios involving application deployment.
This rule detects unauthorized modifications to browser search provider settings in the Windows Registry, targeting keys associated with Chrome and Microsoft Edge search configuration. This activity is often indicative of browser hijacking or search engine redirection campaigns, such as the NinjaMare malware.
This rule detects the execution of processes or network connections that impersonate 'WhatsApp' or 'Instagram' companion applications. It identifies specific file names and process command lines that mimic these applications, often associated with browser-launched or malicious payloads, and monitors for associated network traffic directed toward suspicious endpoints like herokuapp domains.
Detects a specific evasion behavior associated with the NinjaMare malware, where a process idles for at least 7 minutes before moving its window to off-screen coordinates during automated mouse or keystroke input, followed by restoring the window to its original position.
No description available.
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.
Detects incoming emails that impersonate DocuSign notifications, specifically looking for typical phishing lures involving 'Remittance Advice' and a call-to-action to 'Tap here to view document'. This rule identifies emails using common social engineering tactics to harvest credentials or distribute malware via fake document links.
Detects incoming TCP and UDP traffic containing the 'sxcdewqaz!@#' magic string. This pattern is characteristic of a packet-triggered backdoor (often referred to as 'Fire Ant'), which uses custom packet payloads to activate malicious functionality on a listening host.
Detects a pattern of multiple failed authentication attempts (brute force) from an external IP address followed by a successful authentication event on remote access services such as RDP, VPN, or NTLM. The rule filters for non-private IP addresses and flags successes occurring outside of standard business hours.
This rule monitors for email events where the email is flagged for suspicious properties (SPF/DKIM/DMARC failure, threat categorization) and includes potentially malicious attachments or URLs. It then correlates these suspicious emails with subsequent process execution events on the recipient's endpoint within a 30-minute window, identifying a potential successful execution of a phishing payload.
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