DarkGate - Autoit3.EXE File Creation By Uncommon Process

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About the rule

Rule Type

Standard

Rule Description

Detects the usage of curl.exe, KeyScramblerLogon, or other non-standard/suspicious processes used to create Autoit3.exe. This activity has been associated with DarkGate malware, which uses Autoit3.exe to execute shellcode that performs process injection and connects to the DarkGate command-and-control server. Curl, KeyScramblerLogon, and these other processes consitute non-standard and suspicious ways to retrieve the Autoit3 executable.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND PROCESSNAME endswith "\Autoit3.exe,\curl.exe,\ExtExport.exe,\KeyScramblerLogon.exe,\wmprph.exe" AND (FILENAME endswith "\Autoit3.exe" OR OBJECTNAME endswith "\Autoit3.exe") select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Micah Babinski