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General

  • Target

    f8af21d2aa037b9dcab2bd0ca7fe4321aaef3119b23bf0f1eec7abf115fcf454

  • Size

    787KB

  • Sample

    221007-cr2f7sbda2

  • MD5

    925d49af178b98a12118f93c8a82422d

  • SHA1

    cbeff9068bfe1f440053f42484af914962e58c40

  • SHA256

    f8af21d2aa037b9dcab2bd0ca7fe4321aaef3119b23bf0f1eec7abf115fcf454

  • SHA512

    35f825b52d152ab6150f65fd1adabf4827726dceb0d97151d5f68ca4e326878ecdc5f207cf1fbcc423d10e624f7028b1e02f6bc5a28062363d80c2f8a5eb3c73

  • SSDEEP

    12288:dWQ7LPHacEFnn59GS89x+0Yko2oJXWwRx0wYQkYRgKIq280A59twDUHRunnZNdKW:dF7BKn22Lklz6x9ZhqAxw4H6pK

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/lancer/get.php

Attributes
  • extension

    .towz

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.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-Kbx8mJatqN 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: 0577Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    517

Targets

    • Target

      f8af21d2aa037b9dcab2bd0ca7fe4321aaef3119b23bf0f1eec7abf115fcf454

    • Size

      787KB

    • MD5

      925d49af178b98a12118f93c8a82422d

    • SHA1

      cbeff9068bfe1f440053f42484af914962e58c40

    • SHA256

      f8af21d2aa037b9dcab2bd0ca7fe4321aaef3119b23bf0f1eec7abf115fcf454

    • SHA512

      35f825b52d152ab6150f65fd1adabf4827726dceb0d97151d5f68ca4e326878ecdc5f207cf1fbcc423d10e624f7028b1e02f6bc5a28062363d80c2f8a5eb3c73

    • SSDEEP

      12288:dWQ7LPHacEFnn59GS89x+0Yko2oJXWwRx0wYQkYRgKIq280A59twDUHRunnZNdKW:dF7BKn22Lklz6x9ZhqAxw4H6pK

    • 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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • 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