General

  • Target
    eufive_20211117-111753
  • Size 601KB
  • Sample211117-mw82ysbcf6
  • SHA256 177b169c97b34e1deb2a890e7a2d9be0237cc5542771264aadb5cec35421883a
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • vidar

Version
  • 48.6

Botnet
  • 824

C2
  • https://mastodon.online/@valhalla

  • https://koyu.space/@valhalla

Attributes
  • profile_id

    824

Targets

    • Target
      eufive_20211117-111753
    • Size 601KB
    • SHA256 177b169c97b34e1deb2a890e7a2d9be0237cc5542771264aadb5cec35421883a
    • MD5 SHA1 SHA512
    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar Stealer

    • Downloads MZ/PE file

    • Deletes itself

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

MITRE ATT&CK Enterprise v6

Tasks