General

  • Target

    50bb5ff3d31deb44e056fed7a60063dd397cdc28485a8a8c75909d46843eb3b0

  • Size

    2.4MB

  • Sample

    240531-x31z2abb48

  • MD5

    6a28de8624c31fefdf0673141dab696d

  • SHA1

    a75d91b45fdec97f62621f131f695fe3a21cc0d0

  • SHA256

    50bb5ff3d31deb44e056fed7a60063dd397cdc28485a8a8c75909d46843eb3b0

  • SHA512

    a3b0a4058e8643ecb2e946fcd086b811dd8e4307a78ad9dfa18d8edfb6c16ea1c4b7d227186c4cddb47020bd45300d866956d0de96dc7b018fd5fbc6ea7f3ab6

  • SSDEEP

    49152:wQc81KnB/a/hNT/dxYa8aesY3Ot4N7G/:wDta/hNT/dxn0etD/

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

      50bb5ff3d31deb44e056fed7a60063dd397cdc28485a8a8c75909d46843eb3b0

    • Size

      2.4MB

    • MD5

      6a28de8624c31fefdf0673141dab696d

    • SHA1

      a75d91b45fdec97f62621f131f695fe3a21cc0d0

    • SHA256

      50bb5ff3d31deb44e056fed7a60063dd397cdc28485a8a8c75909d46843eb3b0

    • SHA512

      a3b0a4058e8643ecb2e946fcd086b811dd8e4307a78ad9dfa18d8edfb6c16ea1c4b7d227186c4cddb47020bd45300d866956d0de96dc7b018fd5fbc6ea7f3ab6

    • SSDEEP

      49152:wQc81KnB/a/hNT/dxYa8aesY3Ot4N7G/:wDta/hNT/dxn0etD/

    • 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