General

  • Target

    file.exe

  • Size

    407KB

  • Sample

    240603-k8fj3ahh5v

  • MD5

    8f36720e87f9d5f3515afbe099b0e457

  • SHA1

    e404cf4fb5ad9d9bff8bd5c8d343a60df27161d8

  • SHA256

    7d740bcc6e1ebdf1ec1a25242db7ab2aabbfa568394f0775287e28f69d526877

  • SHA512

    05e46480bf2a4e788b21a5209e9400eb73656b8bb6d716af981f36fd05a7c6142c4cfdefa9dee01098c7b2621e6ccf63c331a2ad27fcf9bcea1f45faeb133a25

  • SSDEEP

    6144:+EotgE1A4rFmd7Ta1SkmkwMZCKmLuKtuMfDFrbWWxhg8ZkriwCEvMzZwb0LlmwrW:+fNUd7Ta1DTn+ttfdpbZwGCb0QMqES

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/ta904ek

https://steamcommunity.com/profiles/76561199695752269

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      file.exe

    • Size

      407KB

    • MD5

      8f36720e87f9d5f3515afbe099b0e457

    • SHA1

      e404cf4fb5ad9d9bff8bd5c8d343a60df27161d8

    • SHA256

      7d740bcc6e1ebdf1ec1a25242db7ab2aabbfa568394f0775287e28f69d526877

    • SHA512

      05e46480bf2a4e788b21a5209e9400eb73656b8bb6d716af981f36fd05a7c6142c4cfdefa9dee01098c7b2621e6ccf63c331a2ad27fcf9bcea1f45faeb133a25

    • SSDEEP

      6144:+EotgE1A4rFmd7Ta1SkmkwMZCKmLuKtuMfDFrbWWxhg8ZkriwCEvMzZwb0LlmwrW:+fNUd7Ta1DTn+ttfdpbZwGCb0QMqES

    • 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 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