General

  • Target

    https://www.dropbox.com/scl/fi/ilpsdaepsxvmagzr1qev6/App_Unlock.zip?rlkey=i65r1sueikfl5ncdh7esmosrt&st=hpv99a3n&dl=1

  • Sample

    240712-1bpdpstbjh

Malware Config

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199735694209

https://t.me/puffclou

Attributes
  • user_agent

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

Targets

    • Target

      https://www.dropbox.com/scl/fi/ilpsdaepsxvmagzr1qev6/App_Unlock.zip?rlkey=i65r1sueikfl5ncdh7esmosrt&st=hpv99a3n&dl=1

    • 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.

    • 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.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks