Arnold Chan
@slazTrusted contributorCompletionist
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7,544 detections
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This rule detects modifications to Windows Registry persistence keys (Run and RunOnce) associated with specific suspicious filenames ('cplsupport.exe', 'wtass.exe'), as well as modifications to specific Synapse agent configuration registry keys. These patterns are often associated with persistence mechanisms or unauthorized software configuration changes.
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 instances where base64-encoded PHP code, obfuscated behind a 'data:image/gif;base64' MIME type prefix, is written to the disk as a .php file or initiated by web server processes. This pattern is commonly used in file upload bypass attacks to execute arbitrary code.
Detects the presence of small PHP files containing both PHP execution tags and path traversal sequences. This pattern is indicative of a web shell or malicious script placed outside of intended directories via path traversal exploitation.
Detects mass automated POST requests directed at the 'super_submit_form' action within the 'admin-ajax.php' endpoint of the Super Forms WordPress plugin, indicative of exploitation attempts or vulnerability scanning against CVE-2026-14894.
Detects a malicious HTTP POST request targeting the Elementor Pro WordPress plugin's 'elementor_pro_forms_send_form' action. The rule looks for a specific attempt to bypass file upload restrictions by manipulating the array index of form fields to upload a PHP file via the 'admin-ajax.php' endpoint.
This rule detects inbound HTTP requests directed at known file paths associated with malicious PHP web shells commonly dropped within the Elementor plugin directory of WordPress installations, including attempts to pass parameters to the web shell for command execution.
Detects Direct Send spearphishing impersonating internal roles (IT/Finance/Procurement) with business-themed lures targeting leadership/finance titles. Rewritten: removed a non-functional sender/recipient substring check and a broken EmailPostDeliveryEvents join that made the rule rarely fire; anchored detection to the actual Direct Send signature (null envelope + domain match) and a direct IdentityInfo join; standardized auth-failure parsing to match the other rules in this set.
Detects Direct Send spearphishing impersonating internal roles (IT/Finance/Procurement) with business-themed lures targeting leadership/finance titles. Rewritten: removed a non-functional sender/recipient substring check and a broken EmailPostDeliveryEvents join that made the rule rarely fire; anchored detection to the actual Direct Send signature (null envelope + domain match) and a direct IdentityInfo join; standardized auth-failure parsing to match the other rules in this set.
Detects the disabling of host-based firewalls (Windows Filtering Platform/Advanced Firewall, iptables, or nftables) via command-line tools. The rule excludes common management tools, system accounts, and events where the firewall is re-enabled within a short timeframe, effectively filtering for potentially unauthorized attempts to impair security defenses.
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