General

  • Target

    b2077af7eeb75ed28136d0cd9033d78e3220b6eb4aef8c260de3f69ca61d2fcc

  • Size

    788KB

  • Sample

    230721-al71pabc98

  • MD5

    ad24d33c75d6dc4508df7c8669031742

  • SHA1

    03103659f67585f5806d019365ebc5da5940ea7f

  • SHA256

    b2077af7eeb75ed28136d0cd9033d78e3220b6eb4aef8c260de3f69ca61d2fcc

  • SHA512

    c75a654978a87917b1ce70eec3dcbccb5ccdf5aa3215c135af6ada26ce2133241225e9f2c65ab8555d6ce7752635ea6d1d0702920c0fd2b093f8a37f48938f33

  • SSDEEP

    12288:TRf2phrucbudIFKbKQnvfflzqDfpjDAYyGHHl:VihrBRKeU9+1AYywHl

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .kizu

  • offline_id

    NGHsYuVPwlgoEkG3ENtueNmXtFHSWod7fYayU9t1

  • payload_url

    http://colisumy.com/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-lOjoPPuBzw 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: 0747JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.8

Botnet

https://t.me/sundayevent

C2

https://t.me/sundayevent

https://steamcommunity.com/profiles/76561198982268531

Attributes
  • profile_id_v2

    https://t.me/sundayevent

  • user_agent

    Mozilla/5.0 (X11; Linux 3.5.4-1-ARCH i686; es) KHTML/4.9.1 (like Gecko) Konqueror/4.9

Targets

    • Target

      b2077af7eeb75ed28136d0cd9033d78e3220b6eb4aef8c260de3f69ca61d2fcc

    • Size

      788KB

    • MD5

      ad24d33c75d6dc4508df7c8669031742

    • SHA1

      03103659f67585f5806d019365ebc5da5940ea7f

    • SHA256

      b2077af7eeb75ed28136d0cd9033d78e3220b6eb4aef8c260de3f69ca61d2fcc

    • SHA512

      c75a654978a87917b1ce70eec3dcbccb5ccdf5aa3215c135af6ada26ce2133241225e9f2c65ab8555d6ce7752635ea6d1d0702920c0fd2b093f8a37f48938f33

    • SSDEEP

      12288:TRf2phrucbudIFKbKQnvfflzqDfpjDAYyGHHl:VihrBRKeU9+1AYywHl

    • 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 v15

Tasks