General

  • Target

    124c380edb97a580f2cf36d9c61b1e5f3d8d0af3479d38aefa2de2c412993c88

  • Size

    780KB

  • Sample

    211021-bkcntshga5

  • MD5

    497026e9823732acf829ca2bdadc7c34

  • SHA1

    35614b249134075d4ed8eb9821ed99fbbbf10afe

  • SHA256

    124c380edb97a580f2cf36d9c61b1e5f3d8d0af3479d38aefa2de2c412993c88

  • SHA512

    1861ea3682e99b0c4aab637bd337cc6c8b250c353076862d91774dc9f1f16e3ac1bc9cc777406a497dc575c7bc6f3df806da87de50bbcf4baf8d12e0c000b583

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

      124c380edb97a580f2cf36d9c61b1e5f3d8d0af3479d38aefa2de2c412993c88

    • Size

      780KB

    • MD5

      497026e9823732acf829ca2bdadc7c34

    • SHA1

      35614b249134075d4ed8eb9821ed99fbbbf10afe

    • SHA256

      124c380edb97a580f2cf36d9c61b1e5f3d8d0af3479d38aefa2de2c412993c88

    • SHA512

      1861ea3682e99b0c4aab637bd337cc6c8b250c353076862d91774dc9f1f16e3ac1bc9cc777406a497dc575c7bc6f3df806da87de50bbcf4baf8d12e0c000b583

    • 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