General

  • Target

    b927cb105caf0dfa39e7d095ab25d7ea53cc35e936fecea6e4a93d31174d1f58

  • Size

    1.8MB

  • Sample

    240604-f4sxdaee8v

  • MD5

    ff7aa229821fdeab4283422f885a9ca6

  • SHA1

    a7acc05c0fa2242401de5ea4efa23b588ad2d439

  • SHA256

    b927cb105caf0dfa39e7d095ab25d7ea53cc35e936fecea6e4a93d31174d1f58

  • SHA512

    91b4e57b5fa1a81abb62c0ec1fbc37a23d4e7c92579f4035eaab6973f810679593e602fb57fd62b39c1751b83a9eae7d81ce5dd824e5b5c9fa31cb9d736c21e7

  • SSDEEP

    24576:W7YfUB7F1931tbwYaOV+rEfv0xwT3zxNOt4XigDSCuptNEynEsqqfD:W75B7FDFtbwYa8aesY3Ot4N7G/

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

      b927cb105caf0dfa39e7d095ab25d7ea53cc35e936fecea6e4a93d31174d1f58

    • Size

      1.8MB

    • MD5

      ff7aa229821fdeab4283422f885a9ca6

    • SHA1

      a7acc05c0fa2242401de5ea4efa23b588ad2d439

    • SHA256

      b927cb105caf0dfa39e7d095ab25d7ea53cc35e936fecea6e4a93d31174d1f58

    • SHA512

      91b4e57b5fa1a81abb62c0ec1fbc37a23d4e7c92579f4035eaab6973f810679593e602fb57fd62b39c1751b83a9eae7d81ce5dd824e5b5c9fa31cb9d736c21e7

    • SSDEEP

      24576:W7YfUB7F1931tbwYaOV+rEfv0xwT3zxNOt4XigDSCuptNEynEsqqfD:W75B7FDFtbwYa8aesY3Ot4N7G/

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • 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