General

  • Target

    59dfb3311a97c0424430681e17f1b0e6c406894fe88aaa3676dee3fc88be69ac

  • Size

    729KB

  • Sample

    221011-j2hv6sddf2

  • MD5

    d8eaa6a4796ba5b2bb8ecaa2f9ce3999

  • SHA1

    0cf6a0cc77e2a73eeef82fc434368e9dbea9836d

  • SHA256

    59dfb3311a97c0424430681e17f1b0e6c406894fe88aaa3676dee3fc88be69ac

  • SHA512

    77e0b820d4099e0f35cfb2775140d17473475ba38a844e761b16da89b6ba8e2fbb6453cafd5b352c57916c8570f785020fe423716ddc19c58fd18a38553e79f4

  • SSDEEP

    12288:AT2CXd83Q6vJ8MJ45nk7Dotw9dSAvdwppq4C+9B345pB5psY1oKAGX/+:ATNL6R5Jmgotw9dSAqzCa3457sVKAGXG

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

      59dfb3311a97c0424430681e17f1b0e6c406894fe88aaa3676dee3fc88be69ac

    • Size

      729KB

    • MD5

      d8eaa6a4796ba5b2bb8ecaa2f9ce3999

    • SHA1

      0cf6a0cc77e2a73eeef82fc434368e9dbea9836d

    • SHA256

      59dfb3311a97c0424430681e17f1b0e6c406894fe88aaa3676dee3fc88be69ac

    • SHA512

      77e0b820d4099e0f35cfb2775140d17473475ba38a844e761b16da89b6ba8e2fbb6453cafd5b352c57916c8570f785020fe423716ddc19c58fd18a38553e79f4

    • SSDEEP

      12288:AT2CXd83Q6vJ8MJ45nk7Dotw9dSAvdwppq4C+9B345pB5psY1oKAGX/+:ATNL6R5Jmgotw9dSAqzCa3457sVKAGXG

    • 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