General

  • Target

    a4931dd2aade6ff611390007ecc980d32b77c594509bdea5cfafeb86504e9f66

  • Size

    808KB

  • Sample

    211019-jqbygsfdc6

  • MD5

    3a21f98382d8c62bbc0db98b5ef52a61

  • SHA1

    7cc592b0d0e7a739ecd56df4244f77326d829b43

  • SHA256

    a4931dd2aade6ff611390007ecc980d32b77c594509bdea5cfafeb86504e9f66

  • SHA512

    adbe1fae74ad00f2ffdb713920d5b83a18c94a50036d712343889974f0b98eeb29c8d9afacb59ac01762facc9721336f2ae705d80b214b84512a8f0207a7ab37

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

      a4931dd2aade6ff611390007ecc980d32b77c594509bdea5cfafeb86504e9f66

    • Size

      808KB

    • MD5

      3a21f98382d8c62bbc0db98b5ef52a61

    • SHA1

      7cc592b0d0e7a739ecd56df4244f77326d829b43

    • SHA256

      a4931dd2aade6ff611390007ecc980d32b77c594509bdea5cfafeb86504e9f66

    • SHA512

      adbe1fae74ad00f2ffdb713920d5b83a18c94a50036d712343889974f0b98eeb29c8d9afacb59ac01762facc9721336f2ae705d80b214b84512a8f0207a7ab37

    • 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