General

  • Target

    439f88ef53805c06c643f511763345810583ff43560f87ac9f1b95fe2624dd1b

  • Size

    782KB

  • Sample

    230326-vr8jmahd27

  • MD5

    d01add98dd3e93807d593dad541418ba

  • SHA1

    4a31947640b3dfc80ff145e21d1a1d07edeb6af8

  • SHA256

    439f88ef53805c06c643f511763345810583ff43560f87ac9f1b95fe2624dd1b

  • SHA512

    77f8f0ddbb2a8e9f80a02325fb2dc1d95de270c3f438d06088d52f0895f7c9c7efb9a2b4bd5d50467fbedb872455d778bebf13918db0096a34f3cf9aa233024c

  • SSDEEP

    12288:z5+W1gLoKP4q09p2KXUA7jC9fekk1uwwh0n1Axy8mWM9EBrKZ:11gkKP6p/n7mfWtwhqWxy8OQM

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .jyos

  • offline_id

    MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1

  • 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-fkW8qLaCVQ 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: 0677JOsie

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

      439f88ef53805c06c643f511763345810583ff43560f87ac9f1b95fe2624dd1b

    • Size

      782KB

    • MD5

      d01add98dd3e93807d593dad541418ba

    • SHA1

      4a31947640b3dfc80ff145e21d1a1d07edeb6af8

    • SHA256

      439f88ef53805c06c643f511763345810583ff43560f87ac9f1b95fe2624dd1b

    • SHA512

      77f8f0ddbb2a8e9f80a02325fb2dc1d95de270c3f438d06088d52f0895f7c9c7efb9a2b4bd5d50467fbedb872455d778bebf13918db0096a34f3cf9aa233024c

    • SSDEEP

      12288:z5+W1gLoKP4q09p2KXUA7jC9fekk1uwwh0n1Axy8mWM9EBrKZ:11gkKP6p/n7mfWtwhqWxy8OQM

    • 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