General

  • Target

    .

  • Size

    147KB

  • Sample

    240604-ws4gqseh6v

  • MD5

    4cb7d9b996537868ff50805c47308b43

  • SHA1

    71266b59432af6ec08f991441e158b00e45e8784

  • SHA256

    e8a4ba10ad14247a21d441c7fb1f9f23d376f70e87a0a97e3fb3c62852de8e90

  • SHA512

    ad28b5d36498a97bd938d3f8a207a30d893f7a573ca00e619272cb14faa995de41efbed9f139e06e190552321669bb7d275bfe2f870822cb7852f6ec61b75767

  • SSDEEP

    1536:oRk6HxYfEV5By5GR4DAll1kAru30vD932Ys4D7HhqiS:ukRfOyoHllyJEZHhqiS

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-3558294865-3673844354-2255444939-1000\ETKOG-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: .ETKOG 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/37dc88e96760a65d | 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--- 7ftDEgLb/ZS0lcmZbHM61KDJ6AOtD78KkA7absMgUXYxWLsC+5+UYF9xVmDt9NLJOpDMAuOVtODMRX7IKnQXQzua3LPyzokSUuglaqKXwabsGM4pXku5In6gtMQMqg7sgEh1XW1iPMFgiUj/s1LdWpJHdiPjMpn7rCZNO/A31mak0K8RefoREu3BxtlAsseHWfVIIKN0U4NnA3w0Ga7XDLlF3iOIB6ImYbF6Z/7MBN2mgBr2rZ2gU1R7jNx2WKAyu4W+5zlHFnKwMISBi1CwemOo6FrxnP+Z5F9bSR7OvDBsmLj7oYD6GBgpBqj3RSAVfvfE0yZSXyCRtLeJftAKBnBq/cY2R+i3ZLHFmdKRi0eGP9nyrfNjLLHjDaP0r1BW4eYoT03JrPa/L0B0wffnS0ez96BFoTHFq52HPDCx6yhEudvoPVoM6iaVy+mvqAdvYbwBrtkyoi8A1fmlXzmY7ql4D+w+gTmwK0yub5gfz9wpLQCj3bimwDPi8jPeKPiggI2bWKz+7QkWvC2ihYFfEuZEsyM4ANvhxNQXIE31UkGbyf6MN51c1gY/++QRe2kEznTbCqfrOdcnPBOVfcolLq8b/gmccCeV7bCGEZisVbSQnNiaPkJ9b5I041HXc2vSx6IODB3F1IH8qANwhkbcxMPGvnUSm+rK ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/37dc88e96760a65d

Targets

    • Target

      .

    • Size

      147KB

    • MD5

      4cb7d9b996537868ff50805c47308b43

    • SHA1

      71266b59432af6ec08f991441e158b00e45e8784

    • SHA256

      e8a4ba10ad14247a21d441c7fb1f9f23d376f70e87a0a97e3fb3c62852de8e90

    • SHA512

      ad28b5d36498a97bd938d3f8a207a30d893f7a573ca00e619272cb14faa995de41efbed9f139e06e190552321669bb7d275bfe2f870822cb7852f6ec61b75767

    • SSDEEP

      1536:oRk6HxYfEV5By5GR4DAll1kAru30vD932Ys4D7HhqiS:ukRfOyoHllyJEZHhqiS

    • Gandcrab

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

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Renames multiple (223) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies RDP port number used by Windows

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Registers COM server for autorun

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Defense Evasion

Modify Registry

5
T1112

Pre-OS Boot

1
T1542

Bootkit

1
T1542.003

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

7
T1012

System Information Discovery

7
T1082

Peripheral Device Discovery

2
T1120

Lateral Movement

Remote Services

1
T1021

Remote Desktop Protocol

1
T1021.001

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Defacement

1
T1491

Tasks