General

  • Target

    bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

  • Size

    758KB

  • Sample

    230602-wkmh9acg47

  • MD5

    d43ea1795b1baf72f0d572b0728fc982

  • SHA1

    ab8e5f4b34f3ade45d9b677f706db243ee721add

  • SHA256

    bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

  • SHA512

    cf2e4c30063919d2a191cf5475d6781699d99cc067e647fdf807a53da4d873c446c201a68656106dd3a223baae8de0ad1cee1a4d74d2f3afe7ea994bff2f52d4

  • SSDEEP

    12288:UJEpYSTGaRBX1FoOX1/uwBpoE8CaaRDyWuYK9+g9I3AJpgEdRD3SiqQmOWB:UJEhTtD1FBkw/uaRDNBc+WI3AJpfRl7

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .werz

  • 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: 0718JOsie

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

      bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

    • Size

      758KB

    • MD5

      d43ea1795b1baf72f0d572b0728fc982

    • SHA1

      ab8e5f4b34f3ade45d9b677f706db243ee721add

    • SHA256

      bc6a55d4459cb0fa08894713b5c74ad6338950895d795070ea8ae1aff7b63d44

    • SHA512

      cf2e4c30063919d2a191cf5475d6781699d99cc067e647fdf807a53da4d873c446c201a68656106dd3a223baae8de0ad1cee1a4d74d2f3afe7ea994bff2f52d4

    • SSDEEP

      12288:UJEpYSTGaRBX1FoOX1/uwBpoE8CaaRDyWuYK9+g9I3AJpgEdRD3SiqQmOWB:UJEhTtD1FBkw/uaRDNBc+WI3AJpfRl7

    • 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

    • 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