General

  • Target
    LАSTTOLS-clean.rar
  • Size 1.9MB
  • Sample261110-yteacab13j
  • SHA256 58c9dbb755ea398ba0492f943c512d7267e1556aea88a86090219a38e1dc9632
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • gomorat

Version
  • 1.8

Botnet
  • rustx

C2
  • skynet1488.mywire.org:21853

Mutex
  • @junk_code

Attributes
  • antivirtual

    false

  • certificate

    b10tw31al3i

  • delay_unit

    Hours

  • delay_value

    420

  • disk_spread

    false

  • enable_delay

    false

  • exclusion_wd

    true

  • hidden_file

    true

  • install

    true

  • install_watchdog

    true

  • key

    ggbd4tc0fofmyk01ydslyt0fzm535q

  • path_client

    %ProgramFiles%\junkSearch.exe

  • path_watchdog

    %Windows%\junkSearcher.exe

  • pump

    false

  • rootkit

    mbqy4s36ef4ea1f3yym1l12p1hoew

  • rootkit_type

    junkkit

  • task_client

    ShellHost

  • task_watchdog

    CookieManager

  • usb_spread

    true

  • use_install_admin

    true

  • user_init

    true

  • winlogon_shell_enable

    true

  • wmi_name

    WindowsDefender

  • wmi_startup

    true

Targets

    • Target
      LАSTTOLS-clean.exe
    • Size 2.1MB
    • SHA256 c3410ecb8bba5c28e5e7398bd1da7f39a56d548207f03a7ee1b1cb167560307a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: GomoRAT

      GomoRAT is a Windows RAT written in C#.

    • Modifies WinLogon for persistence

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • 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.

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

MITRE ATT&CK Enterprise v16

Tasks