General

  • Target

    7fa53ffc23299e65d7b85357cdbe23c2eba2546c5339b55719253df552f7aaf3

  • Size

    2.1MB

  • Sample

    240614-bgrnksyfqe

  • MD5

    ead4043ffc27e5e39c9641b5a4eff3c0

  • SHA1

    008937d3d328a8f218d57813c513a1c8617257af

  • SHA256

    7fa53ffc23299e65d7b85357cdbe23c2eba2546c5339b55719253df552f7aaf3

  • SHA512

    ae02012d4f1b00dbfa40347a232380c7968fd8562cd86ec5616d1d226170d9d0fd5be5db2954850792e410d111c4b894a693249915e1d35e7f482c8c40c70176

  • SSDEEP

    24576:Ub4m+sws1qLVNMIlJl6DRKbAlcNRfCKxUfMxVVtes12FxwojKr98YGeGG9iO:UZXOjt6DuAwCKxUkxVVChjHZQs

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

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

Targets

    • Target

      7fa53ffc23299e65d7b85357cdbe23c2eba2546c5339b55719253df552f7aaf3

    • Size

      2.1MB

    • MD5

      ead4043ffc27e5e39c9641b5a4eff3c0

    • SHA1

      008937d3d328a8f218d57813c513a1c8617257af

    • SHA256

      7fa53ffc23299e65d7b85357cdbe23c2eba2546c5339b55719253df552f7aaf3

    • SHA512

      ae02012d4f1b00dbfa40347a232380c7968fd8562cd86ec5616d1d226170d9d0fd5be5db2954850792e410d111c4b894a693249915e1d35e7f482c8c40c70176

    • SSDEEP

      24576:Ub4m+sws1qLVNMIlJl6DRKbAlcNRfCKxUfMxVVtes12FxwojKr98YGeGG9iO:UZXOjt6DuAwCKxUkxVVChjHZQs

    • 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

    • 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