Darshan Thummar
@MightyCompletionist
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2,107 detections
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Detects cron job creation for Linux persistence or execution
Detects removal of Zone.Identifier ADS to bypass MOTW security prompts
This rule detects HTTP responses containing SVG (Scalable Vector Graphics) content that also embeds base64 encoded data starting with 'TVQAA'. This specific sequence ('TVQAA') is characteristic of a base64 encoded Windows executable (MZ header). The rule aims to identify a technique known as SVG smuggling, where malicious executables are hidden within SVG files and delivered to clients, often as a defense evasion tactic.
This rule detects the use of SVG files for HTML smuggling payloads. Specifically, it looks for HTTP responses containing an SVG file ('.svg' in the URI) that also contain '<script' and 'Blob(' within its data. This combination is indicative of an HTML smuggling technique where malicious content is hidden within a seemingly innocuous SVG file and then processed by JavaScript to construct a malicious payload, often a file download.
This rule detects the delivery of a payload via HTTP that contains junk code padding and appears to be an executable file. Specifically, it looks for the byte sequence '90 90 90 90 90 90 90 90 90 90' (often used as NOPs for padding or obfuscation) followed by the 'MZ' magic bytes at the beginning of a file (indicating a Windows executable). The detection is triggered on HTTP responses flowing to the client.
This rule detects the delivery of a polymorphic engine payload via HTTP. It looks for specific content within the HTTP response body, including the strings "mutate" and "engine" (case-insensitive), and the "MZ" magic bytes at the beginning of the file data, indicating a Windows executable. This combination suggests the download of a polymorphic malware component designed to evade detection.
Detects bulk registry queries over SMB for system discovery
Detects deletion of MFA configurations to enable authentication bypass
Detects registration of malicious port monitor DLLs via print spooler
Detects addition of AV exclusion paths to hide malicious files from scanning
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