Overview

overview

10

Static

static

3c8a7a527c...6a.exe

windows7_x64

10

3c8a7a527c...6a.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    94s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03-07-2022 07:08

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General

  • Target

    3c8a7a527c80dcd95acab4fceba6f00079757f907636f1caba50021c29cb866a.exe

  • Size

    661KB

  • MD5

    5ce3924a9cb396534ec099840b3af245

  • SHA1

    0ec3588320ded35404ae8c959c0d9613b5383124

  • SHA256

    3c8a7a527c80dcd95acab4fceba6f00079757f907636f1caba50021c29cb866a

  • SHA512

    666a0180a8d01b4b72bfacb8d040fa2192ec3b1e6c1a46cfcf7f65f42658269029cd738837bd7411754bc18faced54451b379382772a0e8f3b4f07a7799c14cb

Score
10/10
gandcrabbackdoorransomwarespywarestealer

Malware Config

Extracted

Path

C:\TALVQ-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: .TALVQ 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/e04381504bf1d66f | 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/e04381504bf1d66f

Signatures

  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • Modifies extensions of user files 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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.

    spywarestealer
  • 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
    ransomware
  • Drops file in Program Files directory 29 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3c8a7a527c80dcd95acab4fceba6f00079757f907636f1caba50021c29cb866a.exe
    "C:\Users\Admin\AppData\Local\Temp\3c8a7a527c80dcd95acab4fceba6f00079757f907636f1caba50021c29cb866a.exe"
    1⤵
    • Modifies extensions of user files
    • 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 behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:3124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
      2⤵
        PID:3660

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    4
    T1082

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Defacement

    1
    T1491

    Replay Monitor

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    Downloads

    • memory/3124-130-0x0000000002350000-0x00000000023CA000-memory.dmp
      Filesize

      488KB

      Download
    • memory/3124-131-0x0000000000400000-0x00000000004AA000-memory.dmp
      Filesize

      680KB

      Download
    • memory/3124-132-0x0000000002350000-0x00000000023CA000-memory.dmp
      Filesize

      488KB

      Download
    • memory/3660-133-0x0000000000000000-mapping.dmp
      Download