General

  • Target

    f28205b72bc69c352002cab3ffac379d8e8ae711e7b91b52bce7d36083353ed0

  • Size

    750KB

  • Sample

    230606-jwg2padb7w

  • MD5

    57b3e05406b2087cc1dca5a337e5b9cd

  • SHA1

    3289e679f45ab35b6694039d86a828c65e0b687a

  • SHA256

    f28205b72bc69c352002cab3ffac379d8e8ae711e7b91b52bce7d36083353ed0

  • SHA512

    14348dd549fc4f594f9e9ed943a21741fb43463f7ef6fa603f807e66f6b71c89b248ab2f94f3d0ffb0892540d6e63630ca8f22e3851cd0a9710fc8a196500d54

  • SSDEEP

    12288:l5Piy5qaLmiyjG6ID2+xD+6vD9tmxWRAdfATYJfe9FLCDCaJzLs1Rp:l5PoaKtjGrl+6LmxmGfATX9hHCX

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .nerz

  • offline_id

    0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1

  • payload_url

    http://colisumy.com/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-vc50LyB2yb 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: 0722JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

4.1

Botnet

77a63e71a10ee1d81a28b5c866b75922

C2

https://steamcommunity.com/profiles/76561199510444991

https://t.me/task4manager

Attributes
  • profile_id_v2

    77a63e71a10ee1d81a28b5c866b75922

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36 Edg/112.0.1722.34

Targets

    • Target

      f28205b72bc69c352002cab3ffac379d8e8ae711e7b91b52bce7d36083353ed0

    • Size

      750KB

    • MD5

      57b3e05406b2087cc1dca5a337e5b9cd

    • SHA1

      3289e679f45ab35b6694039d86a828c65e0b687a

    • SHA256

      f28205b72bc69c352002cab3ffac379d8e8ae711e7b91b52bce7d36083353ed0

    • SHA512

      14348dd549fc4f594f9e9ed943a21741fb43463f7ef6fa603f807e66f6b71c89b248ab2f94f3d0ffb0892540d6e63630ca8f22e3851cd0a9710fc8a196500d54

    • SSDEEP

      12288:l5Piy5qaLmiyjG6ID2+xD+6vD9tmxWRAdfATYJfe9FLCDCaJzLs1Rp:l5PoaKtjGrl+6LmxmGfATX9hHCX

    • 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