General

  • Target

    39924b6fdedded1a84c1197c2a0bcb53adbdab13568754b5d31fa8814f0d2880

  • Size

    834KB

  • Sample

    211128-cb9smsehfk

  • MD5

    ceea52bf7175f61748fcaa49396f9507

  • SHA1

    217b39644eba260fd2e6806a4d4c643cad44c72f

  • SHA256

    39924b6fdedded1a84c1197c2a0bcb53adbdab13568754b5d31fa8814f0d2880

  • SHA512

    3d03a50fcb5e86ef87d2a18f9017e41b1ae7a07bc7652d776c72cd0c3117ee58a2baf3f5edcf973a07bfedbb2f5700f8213faf94c65d0d09b41a57676d0f3e8f

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/fhsgtsspen6/get.php

Attributes
  • extension

    .rigj

  • offline_id

    Z5GGASEfY71jtxU3i3E8kzvrTJmY9oiZkjcSm0t1

  • payload_url

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

    http://tzgl.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-Tjb0YqckGX 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: 0353gSd743d

rsa_pubkey.plain

Extracted

Family

vidar

Version

48.7

Botnet

517

C2

https://mstdn.social/@anapa

https://mastodon.social/@mniami

Attributes
  • profile_id

    517

Targets

    • Target

      39924b6fdedded1a84c1197c2a0bcb53adbdab13568754b5d31fa8814f0d2880

    • Size

      834KB

    • MD5

      ceea52bf7175f61748fcaa49396f9507

    • SHA1

      217b39644eba260fd2e6806a4d4c643cad44c72f

    • SHA256

      39924b6fdedded1a84c1197c2a0bcb53adbdab13568754b5d31fa8814f0d2880

    • SHA512

      3d03a50fcb5e86ef87d2a18f9017e41b1ae7a07bc7652d776c72cd0c3117ee58a2baf3f5edcf973a07bfedbb2f5700f8213faf94c65d0d09b41a57676d0f3e8f

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

      suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request

    • suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

      suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)

    • suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

      suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload

    • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

      suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil

    • Vidar 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