Analysis

  • max time kernel
    157s
  • max time network
    156s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    28-01-2022 22:45

General

  • Target

    007988b1ffdce1e161071f92a130b64650735a5eed6445806c2c967d0902c286.exe

  • Size

    139KB

  • MD5

    d968a6bab562d04e73a773dece109f80

  • SHA1

    12e939054039c0b114f278231693a9fd1fdb1b2e

  • SHA256

    007988b1ffdce1e161071f92a130b64650735a5eed6445806c2c967d0902c286

  • SHA512

    6e14eea3551bec5aae46535296ecab9390388bbb8f589d9d15dec3f8580bb6442ea1f791d468f806276b541972673df74b5d24d0553b03ec3274aee91e743f13

Malware Config

Extracted

Path

C:\HTKXWWXAYM-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.4 =--- ***********************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: .HTKXWWXAYM 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/a258e38864976688 | 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/a258e38864976688

Signatures

  • Gandcrab

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

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • 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 24 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). Likely ransomware behaviour.

  • 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\007988b1ffdce1e161071f92a130b64650735a5eed6445806c2c967d0902c286.exe
    "C:\Users\Admin\AppData\Local\Temp\007988b1ffdce1e161071f92a130b64650735a5eed6445806c2c967d0902c286.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2748
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:976
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3188

Network

MITRE ATT&CK Enterprise v6

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Downloads