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General

  • Target

    file.exe

  • Size

    777KB

  • Sample

    220908-fv8w8sagfq

  • MD5

    b3e457081acad76912cbdf15e3fb1dc7

  • SHA1

    f22cc7127f02bc89995197612cf54f8b58b1c469

  • SHA256

    6d495ef15b5109636e685112122dfe1c5d854fbcf65a698fcb23a838c1c12200

  • SHA512

    3105046d5901efc114711346509f04fec06ed56c4d4f08496d8be2c8dfd828966aa54bb23f315c94db1bf2d9c3cda4fe1c7b0693315fc371a21c0a3488d8f112

  • SSDEEP

    12288:NTQZCuhNEizhIDopI+RuUbLgw5Z7bhYzjdSB9o3/iqSDXHCw8HoUQF09jtTV:tWjEi2DMuUbLRBh8e9oqpn8XX9hTV

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test3/get.php

Attributes
  • extension

    .mmvb

  • offline_id

    yd6oYv6aBN90yFzTWdZ34sXSXtXiauzOLXZyWht1

  • payload_url

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

    http://acacaca.org/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-xuPJqoyzQE 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: 0556Jhyjd

rsa_pubkey.plain

Targets

    • Target

      file.exe

    • Size

      777KB

    • MD5

      b3e457081acad76912cbdf15e3fb1dc7

    • SHA1

      f22cc7127f02bc89995197612cf54f8b58b1c469

    • SHA256

      6d495ef15b5109636e685112122dfe1c5d854fbcf65a698fcb23a838c1c12200

    • SHA512

      3105046d5901efc114711346509f04fec06ed56c4d4f08496d8be2c8dfd828966aa54bb23f315c94db1bf2d9c3cda4fe1c7b0693315fc371a21c0a3488d8f112

    • SSDEEP

      12288:NTQZCuhNEizhIDopI+RuUbLgw5Z7bhYzjdSB9o3/iqSDXHCw8HoUQF09jtTV:tWjEi2DMuUbLRBh8e9oqpn8XX9hTV

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • 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