General

  • Target

    f933532f23edf97ebe7a3c43787792a092f36ff9cb336ace84a07f0bc2019c91

  • Size

    778KB

  • Sample

    231205-vwrrnsdf42

  • MD5

    f2dbdbb2b0007007256224a68069a9a1

  • SHA1

    6232243dd204ba302ae3c6b07797d5b2d539ef3d

  • SHA256

    f933532f23edf97ebe7a3c43787792a092f36ff9cb336ace84a07f0bc2019c91

  • SHA512

    d3be791f2877bb35bf6ae95d0cda044f1190135546828d3da9190e660896db444e40ac002dd3e427735d7275d34078bbcc65c834ed984f7911ba9081a50e163c

  • SSDEEP

    12288:FRpou/5Qf/LSwzndx2LEnLyFSIXJJRAK/VH5PL1PIJl+fudKqETgeM3:FouALjuEn2wIXJJltZOJpKPM

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .nbzi

  • offline_id

    csCsb6cUvy0iMa6NgGCGH0hSfXQlGjZVEmFVkgt1

  • payload_url

    http://brusuax.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-8dGJ2tqlOd 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: support@freshmail.top Reserve e-mail address to contact us: datarestorehelpyou@airmail.cc Your personal ID: 0832ASdw

rsa_pubkey.plain

Targets

    • Target

      f933532f23edf97ebe7a3c43787792a092f36ff9cb336ace84a07f0bc2019c91

    • Size

      778KB

    • MD5

      f2dbdbb2b0007007256224a68069a9a1

    • SHA1

      6232243dd204ba302ae3c6b07797d5b2d539ef3d

    • SHA256

      f933532f23edf97ebe7a3c43787792a092f36ff9cb336ace84a07f0bc2019c91

    • SHA512

      d3be791f2877bb35bf6ae95d0cda044f1190135546828d3da9190e660896db444e40ac002dd3e427735d7275d34078bbcc65c834ed984f7911ba9081a50e163c

    • SSDEEP

      12288:FRpou/5Qf/LSwzndx2LEnLyFSIXJJRAK/VH5PL1PIJl+fudKqETgeM3:FouALjuEn2wIXJJltZOJpKPM

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Modifies file permissions

    • Adds Run key to start application

    • 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 Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks