General

  • Target

    16b546c9dfbff637ac3ebec6f2c4e71e055f899006c6a1eb015e47e5b4827269

  • Size

    805KB

  • Sample

    231012-hlmzhsef99

  • MD5

    b1e081156b5b88d8267cccf93bd731ed

  • SHA1

    0bffc988f4266430695aea25e1d0edace2abd8e9

  • SHA256

    16b546c9dfbff637ac3ebec6f2c4e71e055f899006c6a1eb015e47e5b4827269

  • SHA512

    3b77c773e0017b8ec78cba2548155596427f60f35e74047223ee771656405ba5bfae9c08134498225d93a44ba9616bfc5e8326e557a4d90cb01cf1006e5fa80b

  • SSDEEP

    24576:I67+TgcFsMeBdmmmrMXXI9fgU7QCx8+oi8:I++TtsMydmmmAXXIJgU0CxF

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wwpl

  • offline_id

    LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.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-xoUXGr6cqT 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: 0786JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

6

Botnet

d37c48c18c73cc0e155c7e1dfde06db9

C2

https://steamcommunity.com/profiles/76561199560322242

https://t.me/cahalgo

Attributes
  • profile_id_v2

    d37c48c18c73cc0e155c7e1dfde06db9

  • user_agent

    Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0 uacq

Targets

    • Target

      16b546c9dfbff637ac3ebec6f2c4e71e055f899006c6a1eb015e47e5b4827269

    • Size

      805KB

    • MD5

      b1e081156b5b88d8267cccf93bd731ed

    • SHA1

      0bffc988f4266430695aea25e1d0edace2abd8e9

    • SHA256

      16b546c9dfbff637ac3ebec6f2c4e71e055f899006c6a1eb015e47e5b4827269

    • SHA512

      3b77c773e0017b8ec78cba2548155596427f60f35e74047223ee771656405ba5bfae9c08134498225d93a44ba9616bfc5e8326e557a4d90cb01cf1006e5fa80b

    • SSDEEP

      24576:I67+TgcFsMeBdmmmrMXXI9fgU7QCx8+oi8:I++TtsMydmmmAXXIJgU0CxF

    • 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

    • Checks computer location settings

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

    • 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

    • 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 v15

Tasks