Overview

overview

10

Static

static

3e71e188e9...50.exe

windows7_x64

10

3e71e188e9...50.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-07-2022 07:25

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General

  • Target

    3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750.exe

  • Size

    586KB

  • MD5

    6be55222abd92fa15e0842014bb13116

  • SHA1

    00dff6871b36c36828b5e2fcd1e3ac6a886025ad

  • SHA256

    3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750

  • SHA512

    827bcdd8302c88b13c67fc6f5a9fef9487c36e72b56597f770705fc1149643f82396b45544542851b733ee11fd15ab9f6f276a4be36a48cdc5c7436ac47cf2c9

Score
10/10
gandcrabbackdoorransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\BAUTLLWVT-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: .BAUTLLWVT 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/78a235bbd87537f9 | 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--- wfKD6iudumBkmpL8IRr4U4exEVaoOXLtwDwmOrT1y1YWvOiWMx5GYaRdvZZdToFRtHYX7m1WsrfPTHGHhh5qBJzzs9MC7736UkGSDDniUJJG8/LFF//kmGmoAZAGLo2j5/wd2UrxMJK+iqKhTkS3ArgAxrZOOOiXrbnhbWMkLHQnbYuWlMClYZxYU6SDxpopRo5r292AV1KIZBZV4APBuUHcKSIr2MWMI0O1MKIP2IpKLE2TS5wNmoQoAHZIP7k/TfrG1tVzlDb3jcZAB3gql9dnWN0lCD4xdg7bDNQrvH1xSi3FCw+6kfktKtizqdynr7r154JiurEmkUXB5+Ks/zc2E+slGt5YPlrRBnPtpRHREdwboicV4o+4Mqb3Y5NyPYz32XaispQRTRkqF1PXJPcJ15EHwNAoAxPMnKo+DO5eAL2fjmE0g6RrIQ3vxBFKwg7yZizpCRFF3vPLMuap1wAZMnQWRlGKajmI1gXgeX8MmUHfnCzkQQpn2LJ8lqCwsnJaVYPpezf0fBAcasAlPyNNwH8VQyjChKYcEu7tKUi2BYlMc5HxHowOLb+dRZ0P/YkhV/3u67ObzJf9ZHZZhw== ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/78a235bbd87537f9

Signatures

  • GandCrab Payload 5 IoCs
  • Gandcrab

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

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

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

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 7 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 34 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 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750.exe
    "C:\Users\Admin\AppData\Local\Temp\3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Users\Admin\AppData\Local\Temp\3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750.exe
      "C:\Users\Admin\AppData\Local\Temp\3e71e188e91521dfe6b679264592598593a662fc1e3ef3ec0d9718831455a750.exe"
      2⤵
      • 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
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4308
      • C:\Windows\SysWOW64\wbem\wmic.exe
        "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1460
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3876

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

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

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

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/1460-141-0x0000000000000000-mapping.dmp
    Download
  • memory/2600-130-0x0000000000C70000-0x0000000000D06000-memory.dmp
    Filesize

    600KB

    Download
  • memory/2600-131-0x0000000005CC0000-0x0000000006264000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/2600-132-0x0000000005710000-0x00000000057A2000-memory.dmp
    Filesize

    584KB

    Download
  • memory/2600-133-0x00000000057E0000-0x00000000057EA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/2600-134-0x0000000001550000-0x00000000015EC000-memory.dmp
    Filesize

    624KB

    Download
  • memory/4308-135-0x0000000000000000-mapping.dmp
    Download
  • memory/4308-136-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

    Download
  • memory/4308-137-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

    Download
  • memory/4308-138-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

    Download
  • memory/4308-139-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

    Download
  • memory/4308-140-0x0000000000400000-0x0000000000428000-memory.dmp
    Filesize

    160KB

    Download