General

  • Target

    file.exe

  • Size

    715KB

  • Sample

    220925-bl84eseacm

  • MD5

    8058c6d3941353be22db99fef7d853e4

  • SHA1

    2841972a9ada13337d9add060119954de0cd697a

  • SHA256

    c4b58f03ba907fe916fb27fcb21402325f752e2e833e66b197da3274dd680968

  • SHA512

    976ff666ff7b1c732e85a003f88d793720e632225d6c9477ad0eec790ca5a7c78546656bb809e3d6d7e2052e188fc8a901874fc65af0ec68253c2cc0135601dd

  • SSDEEP

    12288:ZwtGjpjaPMhuSrNSbsw298mimf/KMKwxsM7Rb4eEVR6fDDGR7:eupjqMhuSgbfQ1f/K3O1ZfDyR

Malware Config

Extracted

Family

djvu

C2

http://winnlinne.com/test3/get.php

Attributes
  • extension

    .ofoq

  • offline_id

    xkNzhkB1wvgoDI7Uo0HPNLY3qCuwoFpP7nlhlut1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://winnlinne.com/files/1/build3.exe

  • ransomnote

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rsa_pubkey.plain

Extracted

Family

vidar

Version

54.6

Botnet

517

C2

https://t.me/huobiinside

https://mas.to/@kyriazhs1975

Attributes
  • profile_id

    517

Targets

    • Target

      file.exe

    • Size

      715KB

    • MD5

      8058c6d3941353be22db99fef7d853e4

    • SHA1

      2841972a9ada13337d9add060119954de0cd697a

    • SHA256

      c4b58f03ba907fe916fb27fcb21402325f752e2e833e66b197da3274dd680968

    • SHA512

      976ff666ff7b1c732e85a003f88d793720e632225d6c9477ad0eec790ca5a7c78546656bb809e3d6d7e2052e188fc8a901874fc65af0ec68253c2cc0135601dd

    • SSDEEP

      12288:ZwtGjpjaPMhuSrNSbsw298mimf/KMKwxsM7Rb4eEVR6fDDGR7:eupjqMhuSgbfQ1f/K3O1ZfDyR

    • 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

    • Checks computer location settings

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

    • 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