General

  • Target

    7a4eb618869b3c2ab31205813d61f56a59c4919cde4d5634a4c005d23cc66bd9

  • Size

    805KB

  • Sample

    211022-ed8z8sbah8

  • MD5

    c5369b0902aceb9d978bf5385c1185cf

  • SHA1

    3d1b074c6a535079cd457c31f09739f026184da1

  • SHA256

    7a4eb618869b3c2ab31205813d61f56a59c4919cde4d5634a4c005d23cc66bd9

  • SHA512

    33562116a229b4ca0ff5fe39e92925b847ebade70e5f49106dfd6eae6206fde27d87e15e35fd975639d81d7a3903df5f62116b658df554909e172a8570564ff5

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

      7a4eb618869b3c2ab31205813d61f56a59c4919cde4d5634a4c005d23cc66bd9

    • Size

      805KB

    • MD5

      c5369b0902aceb9d978bf5385c1185cf

    • SHA1

      3d1b074c6a535079cd457c31f09739f026184da1

    • SHA256

      7a4eb618869b3c2ab31205813d61f56a59c4919cde4d5634a4c005d23cc66bd9

    • SHA512

      33562116a229b4ca0ff5fe39e92925b847ebade70e5f49106dfd6eae6206fde27d87e15e35fd975639d81d7a3903df5f62116b658df554909e172a8570564ff5

    • 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