Resubmissions

31/05/2023, 08:09

230531-j2kd1adf83 10

31/05/2023, 07:57

230531-jth6zaea8s 10

General

  • Target

    eb05132fa10472cfcbe1a5d3fbce3dac1cb79ff200a887c986f1a2e4a25b4829

  • Size

    780KB

  • Sample

    230531-jth6zaea8s

  • MD5

    4b408fae31d49b34f73faec7f7dcaddb

  • SHA1

    9f555b2bb3400974df2e2fd7dd77004763b9a577

  • SHA256

    eb05132fa10472cfcbe1a5d3fbce3dac1cb79ff200a887c986f1a2e4a25b4829

  • SHA512

    94ab744f7057372efefecb06dc2cd3b573aee4122c90224535b9f5f2dffdc1b7af391157479967e78492192b3abee34d82048e125310a46b652b318cc94b5e45

  • SSDEEP

    12288:7nlUVx39r+ta1mwdS42pYScw07OzooQAfPLLUndJcZxZonLaGPjloJwQCJD:7nqFr+tXv7sohrLUdJConvPjKJw

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .weon

  • offline_id

    D4KWjM5DY4jRN5T36xETsvDrARq2cCeStxvviHt1

  • 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-3q8YguI9qh 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: 0721JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.1

Botnet

77a63e71a10ee1d81a28b5c866b75922

C2

https://steamcommunity.com/profiles/76561199510444991

https://t.me/task4manager

Attributes
  • profile_id_v2

    77a63e71a10ee1d81a28b5c866b75922

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Targets

    • Target

      eb05132fa10472cfcbe1a5d3fbce3dac1cb79ff200a887c986f1a2e4a25b4829

    • Size

      780KB

    • MD5

      4b408fae31d49b34f73faec7f7dcaddb

    • SHA1

      9f555b2bb3400974df2e2fd7dd77004763b9a577

    • SHA256

      eb05132fa10472cfcbe1a5d3fbce3dac1cb79ff200a887c986f1a2e4a25b4829

    • SHA512

      94ab744f7057372efefecb06dc2cd3b573aee4122c90224535b9f5f2dffdc1b7af391157479967e78492192b3abee34d82048e125310a46b652b318cc94b5e45

    • SSDEEP

      12288:7nlUVx39r+ta1mwdS42pYScw07OzooQAfPLLUndJcZxZonLaGPjloJwQCJD:7nqFr+tXv7sohrLUdJConvPjKJw

    • 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