Overview

overview

10

Static

static

356bff6966...55.exe

windows7_x64

10

356bff6966...55.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    27-06-2022 00:15

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General

  • Target

    356bff6966ca7136a8486089c17205ba4b50fcc7f60655d82103dedce4473e55.exe

  • Size

    411KB

  • MD5

    5809199a0df6e392aeb2cdc1b519be5d

  • SHA1

    cf3460700ab3a10a15b1faad3bbbf413a312ae92

  • SHA256

    356bff6966ca7136a8486089c17205ba4b50fcc7f60655d82103dedce4473e55

  • SHA512

    9de122e2b29db1ff3a348a4fe07e22b3e6c1b0bad0c3f85776f3e6816d486887d1d4747472e16df524c4e9de2679659b841884f1ef517eb14af05894eb378099

Score
10/10
gandcrabbackdoorransomwarespywarestealersuricata

Malware Config

Extracted

Path

C:\DOVZNRFX-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: .DOVZNRFX 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/94a62e0896f6bc62 | 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/94a62e0896f6bc62

Signatures

  • GandCrab Payload 1 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 15 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 17 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
    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\356bff6966ca7136a8486089c17205ba4b50fcc7f60655d82103dedce4473e55.exe
    "C:\Users\Admin\AppData\Local\Temp\356bff6966ca7136a8486089c17205ba4b50fcc7f60655d82103dedce4473e55.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
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3404
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:3732

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/2508-130-0x0000000002450000-0x000000000248A000-memory.dmp
    Filesize

    232KB

    Download
  • memory/2508-131-0x0000000000400000-0x000000000046B000-memory.dmp
    Filesize

    428KB

    Download
  • memory/2508-133-0x0000000002450000-0x000000000248A000-memory.dmp
    Filesize

    232KB

    Download
  • memory/3404-134-0x0000000000000000-mapping.dmp
    Download