Analysis

  • max time kernel
    148s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 19:16

General

  • Target

    new.exe

  • Size

    1MB

  • MD5

    567bc0f1abc4493a0302f73f76d99fda

  • SHA1

    287799cbe83a6ee7f811da3017081b589ff1d0ad

  • SHA256

    d11d4506f4edca9f202a237d35f484ee02aa0579d886696385d16769c8eb21d0

  • SHA512

    c45271cb1d9dff01267da34f625891172c50d8ae870bff7a7dbab1e509c12a43c89f7afbeb5b49009372ffadac6e0184a3f98ff08c6edaedb5a093bcc9af5294

Malware Config

Extracted

Path

C:\MBCCKHP-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.3 =--- ***********************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: .MBCCKHP 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/1020258edde7f61a | 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/1020258edde7f61a

Signatures

  • Gandcrab

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

  • suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

    suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 2 IoCs
  • 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 13 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 AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\new.exe
    "C:\Users\Admin\AppData\Local\Temp\new.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5016
    • C:\Windows\SysWOW64\wermgr.exe
      "C:\Windows\System32\wermgr.exe"
      2⤵
      • 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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4348
      • C:\Windows\SysWOW64\wbem\wmic.exe
        "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1172
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4516

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

1
T1107

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

2
T1082

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/1172-132-0x0000000000000000-mapping.dmp
  • memory/4348-131-0x0000000000000000-mapping.dmp
  • memory/5016-130-0x0000000000400000-0x00000000005CE000-memory.dmp
    Filesize

    1MB