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General

  • Target

    0736afc494646390af85c92a0bfe87b8648e65c8cc5474de8d7695fe3af75819

  • Size

    885KB

  • Sample

    230210-y1f3hsba52

  • MD5

    aebaf99cc73c4c6a138674be3233113f

  • SHA1

    d4cb12d55649a0443ee7f77fed25e6f343ab9ec9

  • SHA256

    0736afc494646390af85c92a0bfe87b8648e65c8cc5474de8d7695fe3af75819

  • SHA512

    61c8baa08a7a029d29019cf1c7191ad686c7241bcde66a514aa83b85159a23a33e65b67adea3e96fa06621e80346573ca5e64820701d70e58afa4bbcd6219c28

  • SSDEEP

    12288:aKrqlB4+CBeAGfFrwcCNcTyt0uLZBnAv88p/tYvI9rPe7mhnfWE:aKr+BmufFrnT14fAvTtYAJUOnfW

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .vvmm

  • offline_id

    9c20OtJsXdFeF07b1IeFK5ERGv1zIb659YG380t1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://bihsy.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-IiDRZpWuwI 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: 0643JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

2.4

Botnet

19

Attributes
  • profile_id

    19

Targets

    • Target

      0736afc494646390af85c92a0bfe87b8648e65c8cc5474de8d7695fe3af75819

    • Size

      885KB

    • MD5

      aebaf99cc73c4c6a138674be3233113f

    • SHA1

      d4cb12d55649a0443ee7f77fed25e6f343ab9ec9

    • SHA256

      0736afc494646390af85c92a0bfe87b8648e65c8cc5474de8d7695fe3af75819

    • SHA512

      61c8baa08a7a029d29019cf1c7191ad686c7241bcde66a514aa83b85159a23a33e65b67adea3e96fa06621e80346573ca5e64820701d70e58afa4bbcd6219c28

    • SSDEEP

      12288:aKrqlB4+CBeAGfFrwcCNcTyt0uLZBnAv88p/tYvI9rPe7mhnfWE:aKr+BmufFrnT14fAvTtYAJUOnfW

    • 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