General

  • Target

    setup.exe

  • Size

    751KB

  • Sample

    230324-bzq5rsbd75

  • MD5

    1a8dfc07b5d73a85776b45e4b8eb2aa8

  • SHA1

    9b7fe7964616a012c09f74a54f641db63da144d0

  • SHA256

    d935d3deb9f86f85e9eb8ac73c617a4d0eac4c9bbe54e97522c02f79a34685e7

  • SHA512

    f9da7956850ca889f1c190dd0b034d2f69c1013c28d69cc2d2d1ebc13085114ae8f8066aae001ddbfedd9b5f4e8b23b36aa86d0d68430bbbd92177b6bb0fbc57

  • SSDEEP

    12288:Ghev/g8qJpGa02PmZvHa0IusMPrrwP6uamtDuTHsvLX5Y1:w6g8mU72PmZvaGZHtAt6TWr

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .tywd

  • offline_id

    Yao2o6f5vNghOpgVBhEIA8O96SC5vLcgITgaRMt1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-f8UEvx4T0A Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0671IsjO

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.1

Botnet

00d92484c9b27bc8482a2cc94cacc508

C2

https://steamcommunity.com/profiles/76561199472266392

https://t.me/tabootalks

http://135.181.26.183:80

Attributes
  • profile_id_v2

    00d92484c9b27bc8482a2cc94cacc508

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Targets

    • Target

      setup.exe

    • Size

      751KB

    • MD5

      1a8dfc07b5d73a85776b45e4b8eb2aa8

    • SHA1

      9b7fe7964616a012c09f74a54f641db63da144d0

    • SHA256

      d935d3deb9f86f85e9eb8ac73c617a4d0eac4c9bbe54e97522c02f79a34685e7

    • SHA512

      f9da7956850ca889f1c190dd0b034d2f69c1013c28d69cc2d2d1ebc13085114ae8f8066aae001ddbfedd9b5f4e8b23b36aa86d0d68430bbbd92177b6bb0fbc57

    • SSDEEP

      12288:Ghev/g8qJpGa02PmZvHa0IusMPrrwP6uamtDuTHsvLX5Y1:w6g8mU72PmZvaGZHtAt6TWr

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks