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General

  • Target

    8a57aa96e30f490a6031fb777829530dc6fdd07a6380629173a52d23ca96df08

  • Size

    787KB

  • Sample

    221007-x1xjtsddhl

  • MD5

    1d4f2942e0b4275d2ec80d8888a89bf1

  • SHA1

    a38459dbd5f0b383510fda02711a5399c76e60dc

  • SHA256

    8a57aa96e30f490a6031fb777829530dc6fdd07a6380629173a52d23ca96df08

  • SHA512

    1b8b5cc3c6b14695f7f0b7eb3048ad60d7e082ad95f930610d1c62c61edd46777f8b5ae40c45c7becc6dae43ccff2fe6a1dd2c3ea9a78af775265bb009983042

  • SSDEEP

    24576:YpRaOuhqlOrmR6Cus2eAm9oPU0kJQ6YIH:YXaLhIP6C34m9kKO6Y

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

      8a57aa96e30f490a6031fb777829530dc6fdd07a6380629173a52d23ca96df08

    • Size

      787KB

    • MD5

      1d4f2942e0b4275d2ec80d8888a89bf1

    • SHA1

      a38459dbd5f0b383510fda02711a5399c76e60dc

    • SHA256

      8a57aa96e30f490a6031fb777829530dc6fdd07a6380629173a52d23ca96df08

    • SHA512

      1b8b5cc3c6b14695f7f0b7eb3048ad60d7e082ad95f930610d1c62c61edd46777f8b5ae40c45c7becc6dae43ccff2fe6a1dd2c3ea9a78af775265bb009983042

    • SSDEEP

      24576:YpRaOuhqlOrmR6Cus2eAm9oPU0kJQ6YIH:YXaLhIP6C34m9kKO6Y

    • 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