Analysis

  • max time kernel
    66s
  • max time network
    53s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 01:57

General

  • Target

    bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a.exe

  • Size

    291KB

  • MD5

    e6b43b1028b6000009253344632e69c4

  • SHA1

    e536b70e3ffe309f7ae59918da471d7bf4cadd1c

  • SHA256

    bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a

  • SHA512

    07da214314673407a7d3978ee6e1d20bf1e02f135bf557e86b50489ecc146014f2534515c1b613dba96e65489d8c82caaa8ed2e647684d61e5e86bd3e8251adf

  • SSDEEP

    6144:nSRCSpUtLz+/enihebWBUOP3yIhLVMmi0CtG7go+I:SUOEnNnHbmP3yIE3tGX

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-2860750803-256193626-1801997576-1000\VEQUZBIIJ-MANUAL.txt

Family

gandcrab

Ransom Note
---= GANDCRAB V5.2 =--- ***********************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 ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .VEQUZBIIJ 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/b887832b580cdb53 | 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/b887832b580cdb53

Signatures

  • Gandcrab

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

  • Renames multiple (279) 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 29 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a.exe
    "C:\Users\Admin\AppData\Local\Temp\bfb9db791b8250ffa8ebc48295c5dbbca757a5ed3bbb01de12a871b5cd9afd5a.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:2620
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
      2⤵
        PID:5000
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2620 -s 1648
        2⤵
        • Program crash
        PID:4780
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2620 -ip 2620
      1⤵
        PID:2572

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • F:\$RECYCLE.BIN\S-1-5-21-2860750803-256193626-1801997576-1000\VEQUZBIIJ-MANUAL.txt

        Filesize

        8KB

        MD5

        cee3c16e9df7f74e456e0188b2a4f121

        SHA1

        746b92bae2d95e249109d99fcfdf3cd70844d65c

        SHA256

        69d188d457361633308f348a4d116e6bb228b02ca91f7ee8682c35702747c311

        SHA512

        168109ef1282a5a49c16258a7dcf0806e7b142f189d43528173da575c2f8131e12cc04e1b1db8c0534974fc052b66efb8306a6598ba7219aa7ae45ba929819ee

      • memory/2620-1-0x0000000005390000-0x0000000005490000-memory.dmp

        Filesize

        1024KB

      • memory/2620-11-0x0000000000400000-0x00000000052B3000-memory.dmp

        Filesize

        78.7MB

      • memory/2620-730-0x0000000000400000-0x00000000052B3000-memory.dmp

        Filesize

        78.7MB

      • memory/2620-732-0x0000000000400000-0x00000000052B3000-memory.dmp

        Filesize

        78.7MB

      • memory/2620-733-0x0000000005390000-0x0000000005490000-memory.dmp

        Filesize

        1024KB