General

  • Target

    5d751a675ee1ee61a7d8d78ccdd263c1375863a4388fff03fe31ae92cbd543d6

  • Size

    826KB

  • Sample

    211020-ex46dsgeg4

  • MD5

    79be4ff1d0fe195876e0199105e7b190

  • SHA1

    5854b3c38d4626f10882df7c9d7232b8c979a427

  • SHA256

    5d751a675ee1ee61a7d8d78ccdd263c1375863a4388fff03fe31ae92cbd543d6

  • SHA512

    288f48e6ee5f9e860ba1557486a7aa348fc2b9387f97e43c78e4b293638f561e9ffe253d5c584721d64bb8a824a6edbe96b66f553521c54bebe0e8a5a4e76a12

Malware Config

Extracted

Family

vidar

Version

41.5

Botnet

517

C2

https://mas.to/@xeroxxx

Attributes
  • profile_id

    517

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6

Targets

    • Target

      5d751a675ee1ee61a7d8d78ccdd263c1375863a4388fff03fe31ae92cbd543d6

    • Size

      826KB

    • MD5

      79be4ff1d0fe195876e0199105e7b190

    • SHA1

      5854b3c38d4626f10882df7c9d7232b8c979a427

    • SHA256

      5d751a675ee1ee61a7d8d78ccdd263c1375863a4388fff03fe31ae92cbd543d6

    • SHA512

      288f48e6ee5f9e860ba1557486a7aa348fc2b9387f97e43c78e4b293638f561e9ffe253d5c584721d64bb8a824a6edbe96b66f553521c54bebe0e8a5a4e76a12

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • 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

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks