General

  • Target

    8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb

  • Size

    820KB

  • Sample

    211205-hsx33acahn

  • MD5

    b5ca9daea9f2375c8ef81e9d5d4a87e4

  • SHA1

    a57d402443d1b3e817d9399a15dfb35a70841065

  • SHA256

    8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb

  • SHA512

    ae3baa733a43d1f67af366d87ce0aa8ea96c33bcbe6d0351a969513ed2ad9f637b1f867d43cd42d6c15a4f55187b7fa947100d55d6b68a4a95986a9824ee228a

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wnlu

  • offline_id

    gYuqQ5GsAaJom08TivUVhlPzZDKd916x4NcXrWt1

  • 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-m8LBBi8x8F 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: 0357Sigrj

rsa_pubkey.plain

Extracted

Family

vidar

Version

48.9

Botnet

517

C2

https://qoto.org/@mniami

https://noc.social/@menaomi

Attributes
  • profile_id

    517

Targets

    • Target

      8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb

    • Size

      820KB

    • MD5

      b5ca9daea9f2375c8ef81e9d5d4a87e4

    • SHA1

      a57d402443d1b3e817d9399a15dfb35a70841065

    • SHA256

      8a7fa4fd712a3dd1ac8f35469c1f0056d7e6c24932e567e183e2891b63863edb

    • SHA512

      ae3baa733a43d1f67af366d87ce0aa8ea96c33bcbe6d0351a969513ed2ad9f637b1f867d43cd42d6c15a4f55187b7fa947100d55d6b68a4a95986a9824ee228a

    • 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