General

  • Target
    file.exe
  • Size 908KB
  • Sample240708-1q2mkstala
  • SHA256 ec86bd905bd5524841fccc2c895e99d587ddeeced4ffa439d962e05e77c02e2b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • vidar

C2
  • https://t.me/bu77un

  • https://steamcommunity.com/profiles/76561199730044335

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.1) Gecko/20100101 Firefox/128.1

Targets

    • Target
      file.exe
    • Size 908KB
    • SHA256 ec86bd905bd5524841fccc2c895e99d587ddeeced4ffa439d962e05e77c02e2b
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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 v15

Tasks