Resubmissions

03-05-2024 16:55

240503-vffz8sec77 10

15-04-2024 14:29

240415-rtx9wsgf63 10

10-04-2024 15:57

240410-td2cqadc92 10

General

  • Target

    Computer Raper.exe

  • Size

    85.4MB

  • Sample

    240503-vffz8sec77

  • MD5

    bdb24ed9f869fcd462b316148514fc5b

  • SHA1

    83935122b626378a3149e9036cd751514add4b52

  • SHA256

    83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0

  • SHA512

    12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611

  • SSDEEP

    1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97

Malware Config

Extracted

Path

C:\e9470325\PZIUMRKN-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: .PZIUMRKN 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/630bc4a4cec04c85 | 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/630bc4a4cec04c85

Targets

    • Target

      Computer Raper.exe

    • Size

      85.4MB

    • MD5

      bdb24ed9f869fcd462b316148514fc5b

    • SHA1

      83935122b626378a3149e9036cd751514add4b52

    • SHA256

      83875ea85b183c609c5ddcd92afe62265745192a417b80524f12741fc028aca0

    • SHA512

      12fdb77a75debeacbc4b98cac45d09a7bcc378bd9bd51bbc035838b99c1d595660d5c0961a2d041b2e8359f3b5b096f589d39453ada9874436411b94b8b0d611

    • SSDEEP

      1572864:NUkskQ1oOZrCqix58TkbajhXBFEQT9VotzcJ97:N/NQbCbmXXEUvoM97

    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Chimera

      Ransomware which infects local and network files, often distributed via Dropbox links.

    • Chimera Ransomware Loader DLL

      Drops/unpacks executable file which resembles Chimera's Loader.dll.

    • CryptoLocker

      Ransomware family with multiple variants.

    • Gandcrab

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

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • Modifies WinLogon for persistence

    • Modifies Windows Defender Real-time Protection settings

    • UAC bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (317) files with added filename extension

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

    • mimikatz is an open source tool to dump credentials on Windows

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Disables use of System Restore points

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • 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.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Looks up external IP address via web service

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

    • Modifies WinLogon

    • Writes to the Master Boot Record (MBR)

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

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks