General

  • Target

    4a156521f32254d8cd2f78f9132248633552e749fd4e4c03391f244a9aeeee95

  • Size

    779KB

  • Sample

    230328-h6zh2she94

  • MD5

    8c5fd744b770679efe17cba165397e07

  • SHA1

    675e1821b49088391974556874e9c278f29c6b20

  • SHA256

    4a156521f32254d8cd2f78f9132248633552e749fd4e4c03391f244a9aeeee95

  • SHA512

    d400852aa95a7bb2c72b5c01503f6c83e66d7aec64e64511024d08a99314d8ed1a34c2b963b7186ed4e18d60fc15751d4c8d83ae7c47c7e796d82ecd9f0ef896

  • SSDEEP

    24576:vpuPjbEBlDqDgUmPfWTjgd2GbB/7z9Rj:xqwDqxmnKu2Gbx

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .jywd

  • 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: 0675JOsie

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

      4a156521f32254d8cd2f78f9132248633552e749fd4e4c03391f244a9aeeee95

    • Size

      779KB

    • MD5

      8c5fd744b770679efe17cba165397e07

    • SHA1

      675e1821b49088391974556874e9c278f29c6b20

    • SHA256

      4a156521f32254d8cd2f78f9132248633552e749fd4e4c03391f244a9aeeee95

    • SHA512

      d400852aa95a7bb2c72b5c01503f6c83e66d7aec64e64511024d08a99314d8ed1a34c2b963b7186ed4e18d60fc15751d4c8d83ae7c47c7e796d82ecd9f0ef896

    • SSDEEP

      24576:vpuPjbEBlDqDgUmPfWTjgd2GbB/7z9Rj:xqwDqxmnKu2Gbx

    • 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

    • 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