General

  • Target

    file.exe

  • Size

    374KB

  • Sample

    240515-w8b3esec45

  • MD5

    b580ff2d001291bf58bdd23a058ef21b

  • SHA1

    5013dc6e38bd9d1cbe2f7fc0d983b6812f3f2351

  • SHA256

    80994b791b545ba6a8c906e046ab6ae79c5875a4f42da07085113b4b6f22f8ca

  • SHA512

    85643ff028ffa0d7c6e7b3dd69c9316aed5e6c15c364bfdb14ec65ca9859ee8fb2ae04e3990c2275671da27abb727a9505f2acf5453a4bb1a3f4df0664df603b

  • SSDEEP

    6144:3hp+scz0+j/2LXudxnOqC3dFxYkBY8EdltIPaiTeUkHjUP6PiLNwETfeuBMbxFr9:3SscQu/CLtF3BY87PFi7HJAwETfhMlF5

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      file.exe

    • Size

      374KB

    • MD5

      b580ff2d001291bf58bdd23a058ef21b

    • SHA1

      5013dc6e38bd9d1cbe2f7fc0d983b6812f3f2351

    • SHA256

      80994b791b545ba6a8c906e046ab6ae79c5875a4f42da07085113b4b6f22f8ca

    • SHA512

      85643ff028ffa0d7c6e7b3dd69c9316aed5e6c15c364bfdb14ec65ca9859ee8fb2ae04e3990c2275671da27abb727a9505f2acf5453a4bb1a3f4df0664df603b

    • SSDEEP

      6144:3hp+scz0+j/2LXudxnOqC3dFxYkBY8EdltIPaiTeUkHjUP6PiLNwETfeuBMbxFr9:3SscQu/CLtF3BY87PFi7HJAwETfhMlF5

    • 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