General

  • Target

    bf9c5485858e0daa4e452c284925c29b653eeadf5d3bf698b6c3fc8b60c57bec

  • Size

    737KB

  • Sample

    210722-jnjzz83afs

  • MD5

    65c209fc75941beec66b81a7df5e55a4

  • SHA1

    019bad17f1ab89155c2808fb35e577954933a006

  • SHA256

    bf9c5485858e0daa4e452c284925c29b653eeadf5d3bf698b6c3fc8b60c57bec

  • SHA512

    93f4660ab54d3db0f98c65abd11784e86ca4b1f94c2cae681370f0c1d57eb0755eb7b8189d0ded7c5832187496c60d4eae8fe917c766f221976312bb864551ed

Malware Config

Extracted

Family

vidar

Version

39.6

Botnet

517

C2

https://sslamlssa1.tumblr.com/

Attributes
  • profile_id

    517

Targets

    • Target

      bf9c5485858e0daa4e452c284925c29b653eeadf5d3bf698b6c3fc8b60c57bec

    • Size

      737KB

    • MD5

      65c209fc75941beec66b81a7df5e55a4

    • SHA1

      019bad17f1ab89155c2808fb35e577954933a006

    • SHA256

      bf9c5485858e0daa4e452c284925c29b653eeadf5d3bf698b6c3fc8b60c57bec

    • SHA512

      93f4660ab54d3db0f98c65abd11784e86ca4b1f94c2cae681370f0c1d57eb0755eb7b8189d0ded7c5832187496c60d4eae8fe917c766f221976312bb864551ed

    • 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