Emerging Threathightest

DarkGate - Autoit3.EXE Execution Parameters

Detects execution of the legitimate Autoit3 utility from a suspicious parent process. AutoIt3.exe is used within the DarkGate infection chain to execute shellcode that performs process injection and connects to the DarkGate command-and-control server.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Micah BabinskiCreated Sun Oct 15f8e9aa1c-14f2-4dbd-aa59-b98968ed650d2023

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection_proc:
        - Image|endswith: '\Autoit3.exe'
        - OriginalFileName: 'AutoIt3.exe'
    selection_parent:
        ParentImage|endswith:
            - '\cmd.exe'
            - '\KeyScramblerLogon.exe'
            - '\msiexec.exe'
    filter_main_legit_autoit_location:
        Image|endswith:
            - ':\Program Files (x86)\AutoIt3\AutoIt3.exe'
            - ':\Program Files\AutoIt3\AutoIt3.exe'
    condition: all of selection_* and not 1 of filter_main_*