Analysis

  • max time kernel
    141s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-05-2024 01:59

General

  • Target

    1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe

  • Size

    645KB

  • MD5

    1a3ae8198cd91f4e8c783e1c9be8d153

  • SHA1

    3b362ed11730e4b08a6943726b1efb51ec651891

  • SHA256

    21b57732a3ad05f6fd016725d55c6cd59fe733b30d4b04bc2719d14d29336d6b

  • SHA512

    6eb87ea2ce264bdc8bbb8a790f0e88299853f5690f7aa9c354eb51049c721a939263ba84aed41162ded917fe0626b1fa8d8136a4797cee81f859a5e823a6f830

  • SSDEEP

    12288:49vWzeRcl7cJhybXuQope9pLSz8nTK9Tq4Dg6WeUlXO/RyZ7:49qGydop21SYnTK9TSl+EZ7

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-2818691465-3043947619-2475182763-1000\EYNIPFCTA-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.1 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .EYNIPFCTA The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/eaf26a12345f3347 | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/eaf26a12345f3347

Signatures

  • Gandcrab

    Gandcrab is a Trojan horse that encrypts files on a computer.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (253) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1a3ae8198cd91f4e8c783e1c9be8d153_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3172
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • F:\$RECYCLE.BIN\S-1-5-21-2818691465-3043947619-2475182763-1000\EYNIPFCTA-DECRYPT.txt

    Filesize

    8KB

    MD5

    dcbfe7316dc1bb129b5840d0f9f90ae2

    SHA1

    de104aa938ee98841ef1b0048919cee1420969c7

    SHA256

    aad5c17058e2ef432584e8f7a9e617ba16e4d4ae48be84d6b46c0ee35d64e213

    SHA512

    3a4490a3818a3a74f7f9e2278d869b019e5db0e7ef0f8d265752fad0b021f1441aa9383c3614d24290122db9228f1eb5f093adc557b1e1a97afb9395e1234c4b

  • memory/1888-0-0x0000000002360000-0x000000000236D000-memory.dmp

    Filesize

    52KB

  • memory/1888-1-0x0000000002560000-0x0000000002561000-memory.dmp

    Filesize

    4KB

  • memory/1888-2-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-3-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-4-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-5-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-681-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-682-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB

  • memory/1888-684-0x0000000000400000-0x00000000004A7000-memory.dmp

    Filesize

    668KB