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General

  • Target

    94136673a5a18667fef80833aad6be743b504e9198eb730c3b1fce9dbe8a0020

  • Size

    725KB

  • Sample

    220920-rjbcdadce4

  • MD5

    ffb4f45768fd4a36dc6e1bd8863d187a

  • SHA1

    de0c631a2b42181e2980a75e5442f8cd67106d98

  • SHA256

    94136673a5a18667fef80833aad6be743b504e9198eb730c3b1fce9dbe8a0020

  • SHA512

    25ee6c0ea6b70fba955d3746d9d1651d41fcedddd74cc694ff9134af26ba7090fa8704ddff5bea585b411be5b5c4d493cd37f9cac2269d74c6517247db5a7b73

  • SSDEEP

    12288:3xYL/fMS4wmbI13/Yfm2/ctvFJ+1B2Ypxcn0Li4bGpIVeo0J1c0m:3xYL/Ywj13guu8z+1B2YpjQDo0J1c

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

      94136673a5a18667fef80833aad6be743b504e9198eb730c3b1fce9dbe8a0020

    • Size

      725KB

    • MD5

      ffb4f45768fd4a36dc6e1bd8863d187a

    • SHA1

      de0c631a2b42181e2980a75e5442f8cd67106d98

    • SHA256

      94136673a5a18667fef80833aad6be743b504e9198eb730c3b1fce9dbe8a0020

    • SHA512

      25ee6c0ea6b70fba955d3746d9d1651d41fcedddd74cc694ff9134af26ba7090fa8704ddff5bea585b411be5b5c4d493cd37f9cac2269d74c6517247db5a7b73

    • SSDEEP

      12288:3xYL/fMS4wmbI13/Yfm2/ctvFJ+1B2Ypxcn0Li4bGpIVeo0J1c0m:3xYL/Ywj13guu8z+1B2YpjQDo0J1c

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • 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