General

  • Target

    c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8

  • Size

    744KB

  • Sample

    240128-2cefkadacl

  • MD5

    4cd9c246e62582c3ee6b3ec5942909b0

  • SHA1

    c7ca7da6f7cd68458874b6a0605e22211e2e475f

  • SHA256

    c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8

  • SHA512

    f8c340fbbf113ef1fcce0dcdc9d0772777d375cd83b9cbaa7df17fa1b2ccb2957a0d0286bb1611d7712f1a33b3f1ebdc0b5212fceb0d702dee8e3903fce70e0d

  • SSDEEP

    12288:08SXwuNVxXnLroQrUP1PXSKpyTQruwOAkcMtRDf3DK2/x:08VKFLrtKpsaO/TLV

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .cdpo

  • offline_id

    Bn3q97hwLouKbhkQRNO4SeV07gjdEQVm8NKhg0t1

  • payload_url

    http://brusuax.com/dl/build2.exe

    http://habrafa.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-FCWSCsjEWS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0844OSkw

rsa_pubkey.plain

Extracted

Family

vidar

Version

7.5

Botnet

e7447dc405edc4690f5920bdb056364f

C2

https://t.me/bogotatg

https://steamcommunity.com/profiles/76561199621829149

Attributes
  • profile_id_v2

    e7447dc405edc4690f5920bdb056364f

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 11_3) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

Targets

    • Target

      c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8

    • Size

      744KB

    • MD5

      4cd9c246e62582c3ee6b3ec5942909b0

    • SHA1

      c7ca7da6f7cd68458874b6a0605e22211e2e475f

    • SHA256

      c891e4cf8d6a8c25d4ac2057b8a774e89f55cc75b2f84210e4b993e7bdb50ec8

    • SHA512

      f8c340fbbf113ef1fcce0dcdc9d0772777d375cd83b9cbaa7df17fa1b2ccb2957a0d0286bb1611d7712f1a33b3f1ebdc0b5212fceb0d702dee8e3903fce70e0d

    • SSDEEP

      12288:08SXwuNVxXnLroQrUP1PXSKpyTQruwOAkcMtRDf3DK2/x:08VKFLrtKpsaO/TLV

    • Detect Vidar Stealer

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 Enterprise v15

Tasks