General

  • Target

    ee1ef4d7de147ecccc64bf1871850871ace69494f29bc18746d9d6ae8649c049

  • Size

    853KB

  • Sample

    211022-xnylcscae6

  • MD5

    2f07ada7d276d10f1b97907a3e989ffa

  • SHA1

    43fb9a7459efaddbed67b376faf0b77e315bad57

  • SHA256

    ee1ef4d7de147ecccc64bf1871850871ace69494f29bc18746d9d6ae8649c049

  • SHA512

    967f22f7fc032d177d8509bb9a833bfee4588c37ac405bd3574f51748acd526743b91540d1bbb428c8c0df001d8608fec99d466d6de4afd0a8b9c84f5e6f80bf

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

      ee1ef4d7de147ecccc64bf1871850871ace69494f29bc18746d9d6ae8649c049

    • Size

      853KB

    • MD5

      2f07ada7d276d10f1b97907a3e989ffa

    • SHA1

      43fb9a7459efaddbed67b376faf0b77e315bad57

    • SHA256

      ee1ef4d7de147ecccc64bf1871850871ace69494f29bc18746d9d6ae8649c049

    • SHA512

      967f22f7fc032d177d8509bb9a833bfee4588c37ac405bd3574f51748acd526743b91540d1bbb428c8c0df001d8608fec99d466d6de4afd0a8b9c84f5e6f80bf

    • 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