General

  • Target

    12f95f258ef35c561e1c847e813f2308ee2e0b25d4150c6b9ae73aa5f8498a6a

  • Size

    725KB

  • Sample

    210915-jwz79sabd7

  • MD5

    3c0f843723eb5738c73e03b656664447

  • SHA1

    6ce769d175a7192e7120593eaf8900d78622464a

  • SHA256

    12f95f258ef35c561e1c847e813f2308ee2e0b25d4150c6b9ae73aa5f8498a6a

  • SHA512

    d0623d7c28652b8607fcf9d581c667225429a6d2c4999acc1223d2dce90645f5765b748ae0dcc674509f93a15b21b481c357933b4ff7183c17c0aaa73c3a9dbb

Malware Config

Extracted

Family

vidar

Version

40.6

Botnet

517

C2

https://dimonbk83.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      12f95f258ef35c561e1c847e813f2308ee2e0b25d4150c6b9ae73aa5f8498a6a

    • Size

      725KB

    • MD5

      3c0f843723eb5738c73e03b656664447

    • SHA1

      6ce769d175a7192e7120593eaf8900d78622464a

    • SHA256

      12f95f258ef35c561e1c847e813f2308ee2e0b25d4150c6b9ae73aa5f8498a6a

    • SHA512

      d0623d7c28652b8607fcf9d581c667225429a6d2c4999acc1223d2dce90645f5765b748ae0dcc674509f93a15b21b481c357933b4ff7183c17c0aaa73c3a9dbb

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

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