General

  • Target

    13730791254300f5d50e1a0e3653632bd8be027d49b5cba3032ec46073bef6cf

  • Size

    825KB

  • Sample

    211018-1xkyeaehh5

  • MD5

    8bc9c7882fedfbf2f0ca765878f89c6d

  • SHA1

    373b203d4d49d0dd738884c5412e4ba115862d4a

  • SHA256

    13730791254300f5d50e1a0e3653632bd8be027d49b5cba3032ec46073bef6cf

  • SHA512

    ed58f4e07238f1ef51a258a5b858b0393b0dbcbc85bc3a2360e9ba275755d6b3336408c8555cae3f0fa58ceb770c31e6c21ab73af382eb06adad636a0b1edf07

Malware Config

Extracted

Family

vidar

Version

41.3

Botnet

517

C2

https://mas.to/@oleg98

Attributes
  • profile_id

    517

Extracted

Family

djvu

C2

http://rlrz.org/fhsgtsspen6

Targets

    • Target

      13730791254300f5d50e1a0e3653632bd8be027d49b5cba3032ec46073bef6cf

    • Size

      825KB

    • MD5

      8bc9c7882fedfbf2f0ca765878f89c6d

    • SHA1

      373b203d4d49d0dd738884c5412e4ba115862d4a

    • SHA256

      13730791254300f5d50e1a0e3653632bd8be027d49b5cba3032ec46073bef6cf

    • SHA512

      ed58f4e07238f1ef51a258a5b858b0393b0dbcbc85bc3a2360e9ba275755d6b3336408c8555cae3f0fa58ceb770c31e6c21ab73af382eb06adad636a0b1edf07

    • 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