General

  • Target

    4546fa5c446eb86016c6de5406dd8575041c8c092c26badbf8de0954d937e72a

  • Size

    794KB

  • Sample

    221010-1y2ybaddc7

  • MD5

    3c937e41155c84430617e0a8e6effb57

  • SHA1

    bbcbeadb9144092eddf82c20120288cbb2f4698c

  • SHA256

    4546fa5c446eb86016c6de5406dd8575041c8c092c26badbf8de0954d937e72a

  • SHA512

    dce497c7b37e8a1e068422cbfee3fe803bf5b61f0d411a60db68dabd20043eca3dc1865a9e8b093e51dc61f16d85650ce1d9c744ea1c0993fea68879f16a5d21

  • SSDEEP

    12288:xMAR1VNzdt0nhtsLaHMNF6d2TtcOk7qdnUU/k2iZqRvxiVNAe9X/md:xMARLuhm+HMNF6dWxdf/mZyxirlZ/m

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

      4546fa5c446eb86016c6de5406dd8575041c8c092c26badbf8de0954d937e72a

    • Size

      794KB

    • MD5

      3c937e41155c84430617e0a8e6effb57

    • SHA1

      bbcbeadb9144092eddf82c20120288cbb2f4698c

    • SHA256

      4546fa5c446eb86016c6de5406dd8575041c8c092c26badbf8de0954d937e72a

    • SHA512

      dce497c7b37e8a1e068422cbfee3fe803bf5b61f0d411a60db68dabd20043eca3dc1865a9e8b093e51dc61f16d85650ce1d9c744ea1c0993fea68879f16a5d21

    • SSDEEP

      12288:xMAR1VNzdt0nhtsLaHMNF6d2TtcOk7qdnUU/k2iZqRvxiVNAe9X/md:xMARLuhm+HMNF6dWxdf/mZyxirlZ/m

    • 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