Arnold Chan
@slazTrusted contributorCompletionist
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7,555 detections
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Detects the loading of compression libraries (such as lzma.dll or 7z.dll) by ERAAgent.exe followed by suspicious process or thread activity (e.g., remote thread creation, memory allocation). This pattern is often associated with the staging and execution of malicious payloads in memory.
Detects the execution of known GoCaracal malware samples, identified by specific file hashes or staging file paths, occurring in conjunction with low-level keyboard hook installations using SetWindowsHookEx. This behavior is indicative of active keylogging activity.
Detects anomalous sign-in behavior shortly after a successful MFA-authenticated session in Microsoft 365. This rule flags scenarios where a subsequent session for the same user occurs within a short window (30 minutes) from a different IP, ASN, User-Agent, or device identifier, potentially indicating the replay of a stolen session cookie obtained via Adversary-in-the-Middle (AiTM) phishing.
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.
This rule identifies suspicious emails containing password-protected attachments or files often used to bypass email security gateways. It monitors for emails where the subject line includes password hints or keywords like 'protected' or 'secure', combined with the presence of attachments and URL-based links, which are common tactics in phishing campaigns to distribute malicious payloads.
This rule detects potential phishing activity by identifying bulk email campaigns (5 or more recipients) where either the email subject contains known suspicious keywords (e.g., 'password', 'urgent', 'invoice') or the Reply-To address domain differs from the sender domain. The rule specifically excludes emails with attachments or URLs, focusing on social engineering pretexts that aim to initiate a conversation or gather information without external payloads.
This rule monitors for web server exploit attempts (indicated by patterns like JNDI lookups or SQL injection sequences in URI/cookie data) that correlate with a surge in server-side errors (400+ status codes) and subsequent anomalous process creation or outbound network connections from the web server process.
This rule detects potential execution of malicious files from removable media (e.g., USB drives). It monitors for a sequence of events where a removable drive is mounted, a file is subsequently created on that drive, and then that same file is executed within a short time window.
This rule detects IDS/IPS or vulnerability management alerts triggered by exploitation attempts targeting the Cisco IOS XR control plane, specifically related to CVE-2026-20212.
Detects unauthenticated requests to the WordPress admin-ajax.php endpoint utilizing the 'super_create_nonce' action. This action allows an unauthenticated user to generate a valid session nonce, which is a critical bypass mechanism often required for the exploitation of vulnerabilities within the Super Forms plugin, such as CVE-2026-14894.
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