General

  • Target
    ZeninEXT.exe
  • Size 25.0MB
  • Sample261003-t2yazatzay
  • SHA256 b2fe4618f7cd49242c8ebb7cd6d837ed08edf4395e8a374a2c5000ed58c23c27
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • gomorat

Version
  • 1.8

Botnet
  • Cheater

C2
  • tcp3.tunnel4.com:36414

Mutex
  • ^%6$c1to%sq

Attributes
  • antivirtual

    false

  • certificate

    74dlebyyjxh3mlmkmh6l

  • delay_unit

    Hours

  • delay_value

    420

  • disk_spread

    true

  • enable_delay

    false

  • exclusion_wd

    true

  • hidden_file

    true

  • install

    true

  • install_watchdog

    true

  • key

    crwerkhyjpgkq9pd

  • path_client

    %ApplicationData%\WD

  • path_watchdog

    %ProgramFiles%\WD

  • pump

    false

  • rootkit

    ak0wu6qmr

  • rootkit_type

    usermode

  • task_client

    SecurityShell

  • task_watchdog

    ShellManager

  • usb_spread

    true

  • use_install_admin

    true

  • user_init

    true

  • winlogon_shell_enable

    true

  • wmi_name

    WindowsDefender

  • wmi_startup

    true

Targets

    • Target
      ZeninEXT.exe
    • Size 25.0MB
    • SHA256 b2fe4618f7cd49242c8ebb7cd6d837ed08edf4395e8a374a2c5000ed58c23c27
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: GomoRAT

      GomoRAT is a Windows RAT written in C#.

    • Modifies WinLogon for persistence

    • Event Triggered Execution: AppInit DLLs

      Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v16

Tasks