Analysis

  • max time kernel
    168s
  • max time network
    165s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    28-01-2022 18:24

General

  • Target

    c7f2cb7fb3ce23e7144c1ff6bffa3dc013d706be2d78ed7da3c07064c71aa08c.exe

  • Size

    139KB

  • MD5

    1de7f6df1f5cd88c36d79c2f0ce0e6b2

  • SHA1

    b4c100becdb6ed88a26365fd233f9be622d69dd6

  • SHA256

    c7f2cb7fb3ce23e7144c1ff6bffa3dc013d706be2d78ed7da3c07064c71aa08c

  • SHA512

    e51626b1986953a370cf59c7c1b16b414e8444b3aad4e6032bf5cbd1fcfb4a5de09a97986acf87d688a463fe8aacd2c4c8130d9fc352e3f431a24810d5d6652a

Malware Config

Extracted

Path

C:\JPWICKPZJ-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: .JPWICKPZJ 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/e9859bb4317581 | 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/e9859bb4317581

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 5 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 32 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\c7f2cb7fb3ce23e7144c1ff6bffa3dc013d706be2d78ed7da3c07064c71aa08c.exe
    "C:\Users\Admin\AppData\Local\Temp\c7f2cb7fb3ce23e7144c1ff6bffa3dc013d706be2d78ed7da3c07064c71aa08c.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:2708
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1016
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3796

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

1
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

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Downloads