General

  • Target

    3805a3da1de4867e80cf097e771a90bb7afd4eb5c710398bbc870af90a825eed

  • Size

    778KB

  • Sample

    230327-dm4ansdd51

  • MD5

    454e5d237b4d653690d3dc0353fd1ad4

  • SHA1

    2fbf4560fb68ab9a984c266e96b80f07e3ee2e4f

  • SHA256

    3805a3da1de4867e80cf097e771a90bb7afd4eb5c710398bbc870af90a825eed

  • SHA512

    ef3eaed160a1e21b50a1a83ac6b6b6de2b78b2535a1a1aaa2c36ebb0c252d043a85d875034be37c033f410cf558816efa15ef41d979e8eff87cec4835bf18bc9

  • SSDEEP

    24576:lgPX0NYTOupbq9q8nEKAz5uBv0DVY+Pa3j1jaV:29TJpKq8nn45lDVYtj1j8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .jywd

  • offline_id

    MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1

  • payload_url

    http://uaery.top/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-fkW8qLaCVQ 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: datarestorehelp@airmail.cc Your personal ID: 0675JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.1

Botnet

00d92484c9b27bc8482a2cc94cacc508

C2

https://steamcommunity.com/profiles/76561199472266392

https://t.me/tabootalks

http://135.181.26.183:80

Attributes
  • profile_id_v2

    00d92484c9b27bc8482a2cc94cacc508

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Targets

    • Target

      3805a3da1de4867e80cf097e771a90bb7afd4eb5c710398bbc870af90a825eed

    • Size

      778KB

    • MD5

      454e5d237b4d653690d3dc0353fd1ad4

    • SHA1

      2fbf4560fb68ab9a984c266e96b80f07e3ee2e4f

    • SHA256

      3805a3da1de4867e80cf097e771a90bb7afd4eb5c710398bbc870af90a825eed

    • SHA512

      ef3eaed160a1e21b50a1a83ac6b6b6de2b78b2535a1a1aaa2c36ebb0c252d043a85d875034be37c033f410cf558816efa15ef41d979e8eff87cec4835bf18bc9

    • SSDEEP

      24576:lgPX0NYTOupbq9q8nEKAz5uBv0DVY+Pa3j1jaV:29TJpKq8nn45lDVYtj1j8

    • 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

    • Checks computer location settings

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

    • 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 Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks