General

  • Target

    57b79a89769695f0ef59b712c16561bf97af42ee5b9b39323f95d9285313ffc0

  • Size

    784KB

  • Sample

    230325-lkt8zsca96

  • MD5

    2de45633515a534d3093b0facaa22fbc

  • SHA1

    67917f1afb9d3585c384b168c662d40449c1b56b

  • SHA256

    57b79a89769695f0ef59b712c16561bf97af42ee5b9b39323f95d9285313ffc0

  • SHA512

    f8fea380074006ea853eea96ac99adb448e43368abb398a48d36d4a3a2d2af2c7a6aa18e30252f12f3785dd836dfd141d5a6cb27550fd1dd97f3478021eb9730

  • SSDEEP

    12288:bEVBP3UvOGSs11UpsQI9oUtclVr7+KLIEMBKlHhQ1Geb7FvULfCAVm:bEYvPS4CpsQIiAcb9M9B6StwCAV

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

      57b79a89769695f0ef59b712c16561bf97af42ee5b9b39323f95d9285313ffc0

    • Size

      784KB

    • MD5

      2de45633515a534d3093b0facaa22fbc

    • SHA1

      67917f1afb9d3585c384b168c662d40449c1b56b

    • SHA256

      57b79a89769695f0ef59b712c16561bf97af42ee5b9b39323f95d9285313ffc0

    • SHA512

      f8fea380074006ea853eea96ac99adb448e43368abb398a48d36d4a3a2d2af2c7a6aa18e30252f12f3785dd836dfd141d5a6cb27550fd1dd97f3478021eb9730

    • SSDEEP

      12288:bEVBP3UvOGSs11UpsQI9oUtclVr7+KLIEMBKlHhQ1Geb7FvULfCAVm:bEYvPS4CpsQIiAcb9M9B6StwCAV

    • 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