General

  • Target
    Gomo.exe
  • Size 188KB
  • Sample260818-gfewaafe96
  • SHA256 9d77f535d57a86d008b2ee3af846293c79c8df2f50dd9b9999cd8bb4ac28dffb
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • sheetrat

Version
  • 1.8

C2
  • mrr.cantdown.su:1464

Mutex
Attributes
  • anti_virtual

    false

  • certificate

    jfr0ukag3j3hyajw1

  • exclusion_wd

    true

  • hidden_file

    true

  • install

    true

  • install_watch_dog

    true

  • key

    03brvs7b6mnvzbbw11sqts

  • path_client

    %Windows%\exploler

  • path_watch_dog

    %ProgramFiles%\exploler

  • pump

    false

  • rootkit

    k3y7xertd9ekrs74h

  • task_client

    ShellHost

  • use_install_admin

    true

  • user_init

    false

Extracted

Path
  • C:\Users\Admin\AppData\Local\Microsoft\OneNote\16.0\cache\_R_E_A_D___T_H_I_S___RB0JORR_.txt

  • cerber

Ransom Note
  • Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/EB26-F5E1-8828-0098-BEE5 Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/EB26-F5E1-8828-0098-BEE5 2. http://xpcx6erilkjced3j.19kdeh.top/EB26-F5E1-8828-0098-BEE5 3. http://xpcx6erilkjced3j.1mpsnr.top/EB26-F5E1-8828-0098-BEE5 4. http://xpcx6erilkjced3j.18ey8e.top/EB26-F5E1-8828-0098-BEE5 5. http://xpcx6erilkjced3j.17gcun.top/EB26-F5E1-8828-0098-BEE5 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs
  • http://xpcx6erilkjced3j.onion/EB26-F5E1-8828-0098-BEE5

  • http://xpcx6erilkjced3j.1n5mod.top/EB26-F5E1-8828-0098-BEE5

  • http://xpcx6erilkjced3j.19kdeh.top/EB26-F5E1-8828-0098-BEE5

  • http://xpcx6erilkjced3j.1mpsnr.top/EB26-F5E1-8828-0098-BEE5

  • http://xpcx6erilkjced3j.18ey8e.top/EB26-F5E1-8828-0098-BEE5

  • http://xpcx6erilkjced3j.17gcun.top/EB26-F5E1-8828-0098-BEE5

Targets

    • Target
      Gomo.exe
    • Size 188KB
    • SHA256 9d77f535d57a86d008b2ee3af846293c79c8df2f50dd9b9999cd8bb4ac28dffb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects Dracula aka Samurai Stealer payload

    • Detects Sheetrat Payload

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

    • Family: Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    • Family: Dracula, Samurai

      Dracula aka Samurai is a stealer written in C#.

    • Family: Sheetrat, NonEuclid rat

      Sheetrat aka NonEuclid RAT is a trojan written in C#.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Boot or Logon Autostart Execution: Active Setup

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

    • Contacts a large (1108) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Event Triggered Execution: AppInit DLLs

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

    • Modifies Windows Firewall

    • 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

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook profiles

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks