Analysis

  • max time kernel
    140s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/07/2024, 04:26

General

  • Target
    3840a023db0a4235495fc3b3e48046c4_JaffaCakes118.exe
  • Size 225KB
  • Sample240729-e2v4aatbjl
  • SHA256 baa3d81ee5a064105cd92ae3474a695324d5cd9e99d1e5d816aacfeffba62cd3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • F:\$RECYCLE.BIN\S-1-5-21-807826884-2440573969-3755798217-1000\RQIUMIAE-DECRYPT.txt

Ransom Note
  • ---= GANDCRAB V5.0.2 =--- ***********************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 WILL BE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .RQIUMIAE 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/9f4a431d9c2e6a58 | 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/9f4a431d9c2e6a58

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 (313) 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 39 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 7 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 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\3840a023db0a4235495fc3b3e48046c4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3840a023db0a4235495fc3b3e48046c4_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:372
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2464
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2848

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        RQIUMIAE-DECRYPT.txt

        • Path F:\$RECYCLE.BIN\S-1-5-21-807826884-2440573969-3755798217-1000\RQIUMIAE-DECRYPT.txt
        • Size 8KB
        • SHA256 9388996bc4215107acbd32d67fb49d39b0aebdaf0c9603014435418f5b072f2b
        • MD5 SHA1 SHA512 SSDEEP

        memory/372-1-0x0000000000740000-0x0000000000840000-memory.dmp

        memory/372-2-0x0000000000400000-0x0000000000428000-memory.dmp

        memory/372-494-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/372-502-0x0000000000400000-0x000000000043D000-memory.dmp

        memory/372-503-0x0000000000740000-0x0000000000840000-memory.dmp

        memory/372-513-0x0000000000400000-0x0000000000428000-memory.dmp