Overview

overview

10

Static

static

3d6b431294...b0.exe

windows7_x64

10

3d6b431294...b0.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    141s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03-07-2022 03:09

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General

  • Target

    3d6b4312947a3a0f76abd8981c5452dfd26aadaa109d3e200d987f8e903d5ab0.exe

  • Size

    208KB

  • MD5

    b28e0a994aec0fed8a429852f5f96b69

  • SHA1

    ae83fb72418e9ab22722b9ece02f93860b4ffc6c

  • SHA256

    3d6b4312947a3a0f76abd8981c5452dfd26aadaa109d3e200d987f8e903d5ab0

  • SHA512

    a9031899f7cea9153e9fa3442bfbfd001cd157347828ebcc0dace421f4571464bffac582522b3aecc0297925ec01d6ee4f208cf679ae5987a584ac583db9ac2f

Score
10/10
gandcrabbackdoorransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\KRAB-DECRYPT.txt

Ransom Note
---= GANDCRAB V4 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KRAB 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/b4501dc620c28291 | 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/b4501dc620c28291

Signatures

  • GandCrab Payload 2 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 5 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.

  • Drops file in Program Files directory 16 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 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3d6b4312947a3a0f76abd8981c5452dfd26aadaa109d3e200d987f8e903d5ab0.exe
    "C:\Users\Admin\AppData\Local\Temp\3d6b4312947a3a0f76abd8981c5452dfd26aadaa109d3e200d987f8e903d5ab0.exe"
    1⤵
    • Modifies extensions of user files
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2624
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5024
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

1
T1107

Install Root Certificate

1
T1130

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

Inhibit System Recovery

1
T1490

Replay Monitor

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Downloads

  • memory/2624-130-0x000000000081E000-0x0000000000830000-memory.dmp
    Filesize

    72KB

    Download
  • memory/2624-131-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

    Download
  • memory/2624-132-0x000000000081E000-0x0000000000830000-memory.dmp
    Filesize

    72KB

    Download
  • memory/2624-133-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

    Download
  • memory/5024-134-0x0000000000000000-mapping.dmp
    Download