General

  • Target
    3f355ae395b605682e8c759c50c3bdb3.exe
  • Size 809KB
  • Sample210608-vs6hfnycne
  • SHA256 d577b90e358071e4681e45d1b0d69d28d8671b1bc7200ddac5b6dab5b3482f66
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 39.3

Botnet
  • 517

C2
  • https://bandakere.tumblr.com

Attributes
  • profile_id

    517

Targets

    • Target
      3f355ae395b605682e8c759c50c3bdb3.exe
    • Size 809KB
    • SHA256 d577b90e358071e4681e45d1b0d69d28d8671b1bc7200ddac5b6dab5b3482f66
    • MD5 SHA1 SHA512
    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • 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 Enterprise v6

Tasks