General

  • Target

    file.exe

  • Size

    829KB

  • Sample

    240516-yqc8wadh4z

  • MD5

    589a60e0782a9d79f71102e03213392e

  • SHA1

    48699baa16fc331a390536cad01cba0cd083b8da

  • SHA256

    def454f0d1da69d6c01caed4c7c1894441ba72e8153a9b4058f4407007aaf578

  • SHA512

    b395051eb11e2bb396a427f4896e0d80d4c8298e5a31b50193aee802d4123b32fad0ccf9fc69ac7cee53e5462ba81079355f14eac57baf7e42a91143dee7e088

  • SSDEEP

    24576:WhLNAyNC5zV+QQtOidEbPsYmy6MmBa1QoUTw7c54zIBo6B93nUDR1/2:WhxCH+QQtOiGbPsYUa1FOw3kBo633UtU

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      file.exe

    • Size

      829KB

    • MD5

      589a60e0782a9d79f71102e03213392e

    • SHA1

      48699baa16fc331a390536cad01cba0cd083b8da

    • SHA256

      def454f0d1da69d6c01caed4c7c1894441ba72e8153a9b4058f4407007aaf578

    • SHA512

      b395051eb11e2bb396a427f4896e0d80d4c8298e5a31b50193aee802d4123b32fad0ccf9fc69ac7cee53e5462ba81079355f14eac57baf7e42a91143dee7e088

    • SSDEEP

      24576:WhLNAyNC5zV+QQtOidEbPsYmy6MmBa1QoUTw7c54zIBo6B93nUDR1/2:WhxCH+QQtOiGbPsYUa1FOw3kBo633UtU

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • 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.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks