Overview

overview

10

Static

static

3

8b7851ae38...5c.exe

windows10-2004-x64

10

8b7851ae38...5c.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c.exe
  • Size 763KB
  • Sample260731-pzskgstdjb
  • SHA256 8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

  • djvu

C2

  • http://cajgtus.com/test1/get.php

Attributes
  • extension

    .bgjs

  • offline_id

    Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1

  • payload_url

    http://sdfjhuz.com/dl/build2.exe

    http://cajgtus.com/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0863PsawqS

rsa_pubkey.plain

Targets

    • Target
      8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c.exe
    • Size 763KB
    • SHA256 8b7851ae383ee5e1d106322f99d0a6149044e317ed310ce7464ff7d82afa725c
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverydjvupersistenceransomware

    • Detected Djvu ransomware

    • Family: Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Checks computer location settings

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

    • Executes dropped EXE

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

      discovery

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks