Tim Peck
@timpeckTrusted contributorCompletionist
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919 detections
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Detects the execution of rundll32.exe or regsvr32.exe loading a DLL from a user-writable, non-standard application data path. This is a technique used by ValleyRAT as part of the Silver Fox campaign to evade detection. The specific path 'AppData\Roaming\Embarcadero\' is a strong indicator of this threat.
Detects the unique User-Agent string "A WinHTTP Example Program/1.0" used by the MuddyViper backdoor for C2 communications, as reported in the MuddyWater campaign.
Detects a process executing from a temporary directory that masquerades as the legitimate 'systemd-logind' service. This behavior is characteristic of the V3G4 Mirai-derived botnet, which uses this technique to evade detection.
Detects the use of certutil.exe to decode a payload from a file with a misleading extension (e.g., .png) and save it as a DLL in a suspicious location. This technique was observed in the 'Operation Hanoi Thief' campaign.
Detects a User Account Control (UAC) bypass attempt using the ICMLuaUtil elevated COM interface. This technique has been observed in use by the Silver Fox APT group to escalate privileges.
Detects the creation of a new domain user account that is immediately added to a high-privilege group, such as Domain Admins. This pattern is a strong indicator of persistence and privilege escalation, as observed in the Lynx Ransomware campaign.
Detects the PREYHUNTER 'watcher' module performing anti-analysis checks by launching common security, forensic, or shell tools.
This rule detects potential Browser-in-the-Browser (BITB) phishing attacks, specifically targeting the 'Sneaky2FA' technique. It looks for HTTP responses containing an iframe, base64 encoded image data, and the string ';base64,', which are indicators of a malicious page attempting to mimic a legitimate login portal within an iframe to steal credentials.
Detects the creation of a named pipe with the format `\.\pipe\dll-%hex_encoded_PID%`. This behavior is associated with the Matanbuchus malware, which uses this technique to inject a DLL payload into a remote msiexec.exe process.
Detects HTTP requests targeting the Oracle Identity Manager REST API that contain known authentication bypass suffixes, such as `?WSDL` or `;.wadl`. This indicates an attempt to exploit the initial authentication bypass stage of the CVE-2025-61757 exploit chain.
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