General

  • Target

    a1b6bb634fdec34b6c8f311acff992b9512727d21462535e0f3a5abbfda45cba

  • Size

    729KB

  • Sample

    221011-jfnvascehj

  • MD5

    9bb8913d2922334f5e8cc6b97a0505e8

  • SHA1

    8bcbdfa8b1b8a080a8ae9592b1e8aad0a8447be4

  • SHA256

    a1b6bb634fdec34b6c8f311acff992b9512727d21462535e0f3a5abbfda45cba

  • SHA512

    dedb48fc3296fdbc52942381de4823f7d734ca830c80d01f03ca984a4b5e074ee7a7a68429556e9a49a9b67b51a2887de638d52170815a7a484677dce93e6a70

  • SSDEEP

    12288:fZeCxE2BiOEfLDoBNu4NQRiXVgaO/EsJM9N+pHOEScur9Pp1QdZithFAtgR:fZK2BiOWULNvFJuEseMpHOfhpCd0FAts

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tohj

  • 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: 0574Jhyjd

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

      a1b6bb634fdec34b6c8f311acff992b9512727d21462535e0f3a5abbfda45cba

    • Size

      729KB

    • MD5

      9bb8913d2922334f5e8cc6b97a0505e8

    • SHA1

      8bcbdfa8b1b8a080a8ae9592b1e8aad0a8447be4

    • SHA256

      a1b6bb634fdec34b6c8f311acff992b9512727d21462535e0f3a5abbfda45cba

    • SHA512

      dedb48fc3296fdbc52942381de4823f7d734ca830c80d01f03ca984a4b5e074ee7a7a68429556e9a49a9b67b51a2887de638d52170815a7a484677dce93e6a70

    • SSDEEP

      12288:fZeCxE2BiOEfLDoBNu4NQRiXVgaO/EsJM9N+pHOEScur9Pp1QdZithFAtgR:fZK2BiOWULNvFJuEseMpHOfhpCd0FAts

    • 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