General

  • Target

    setup.exe

  • Size

    750KB

  • Sample

    230328-bhsl9sgb83

  • MD5

    135b751eefe23c858fb1bec740fd7c1b

  • SHA1

    f57f08d10464654567ecf65050dbf977c9c91dfb

  • SHA256

    062326379158ab9a337c352b73a57e6d3465cd26e92ce2247fc502985c9e15b8

  • SHA512

    495543aa95276c91c6a55c5c217ccbbd6a3da0e3a5fc9db0f29fc3871fda3a475c572044bf61203d4311ef1688d3a8b26be8e6926a2a48a6c2e38a2530e8b667

  • SSDEEP

    12288:5I77rRfnhORcgaxHvskEzH71exeDqtApMWOGsWguv:5ITRfhOegCENr7ge7pLOlWgu

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

      setup.exe

    • Size

      750KB

    • MD5

      135b751eefe23c858fb1bec740fd7c1b

    • SHA1

      f57f08d10464654567ecf65050dbf977c9c91dfb

    • SHA256

      062326379158ab9a337c352b73a57e6d3465cd26e92ce2247fc502985c9e15b8

    • SHA512

      495543aa95276c91c6a55c5c217ccbbd6a3da0e3a5fc9db0f29fc3871fda3a475c572044bf61203d4311ef1688d3a8b26be8e6926a2a48a6c2e38a2530e8b667

    • SSDEEP

      12288:5I77rRfnhORcgaxHvskEzH71exeDqtApMWOGsWguv:5ITRfhOegCENr7ge7pLOlWgu

    • 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

2
T1112

Install Root Certificate

1
T1130

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