General

  • Target

    file.exe

  • Size

    778KB

  • Sample

    231205-v2jy1sdc3y

  • MD5

    3d3158bde3e31d3b7b9c1e1e2398ddd5

  • SHA1

    f1d1ff15a739eb1fc5460c3dff7b2ad78ca53788

  • SHA256

    347c3b434e770b38ce06819cad853f93cb139fb4304e40a78933d92f56749d12

  • SHA512

    5b7016ac1d24913b28447980e51f0a7ebd9cd6fe370772409f402c04ea009384656913527a1c3e63c215bcda19b63080c636c3516cd21ee1f477479081e94a7d

  • SSDEEP

    12288:U/2nq6Bx5H+0g3zSKAPIOLTGEuSzbgQX6D3V6YzN4188r6McBg7bO0RtrEhXM:UGqmeXSKnKRsc7CKjrABg766ri

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .nbwr

  • offline_id

    csCsb6cUvy0iMa6NgGCGH0hSfXQlGjZVEmFVkgt1

  • payload_url
  • 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: 0833ASdw

rsa_pubkey.plain

Targets

    • Target

      file.exe

    • Size

      778KB

    • MD5

      3d3158bde3e31d3b7b9c1e1e2398ddd5

    • SHA1

      f1d1ff15a739eb1fc5460c3dff7b2ad78ca53788

    • SHA256

      347c3b434e770b38ce06819cad853f93cb139fb4304e40a78933d92f56749d12

    • SHA512

      5b7016ac1d24913b28447980e51f0a7ebd9cd6fe370772409f402c04ea009384656913527a1c3e63c215bcda19b63080c636c3516cd21ee1f477479081e94a7d

    • SSDEEP

      12288:U/2nq6Bx5H+0g3zSKAPIOLTGEuSzbgQX6D3V6YzN4188r6McBg7bO0RtrEhXM:UGqmeXSKnKRsc7CKjrABg766ri

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • 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

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Tasks