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General

  • Target

    fe39bff12db02c5867842f98f3bd7a77717aa059a5860991cf125a07b15a9746

  • Size

    2.4MB

  • Sample

    240601-ac233sbc36

  • MD5

    d37dd534863c2b352b73c4fded3b8d73

  • SHA1

    b01158d381136a7901f8c1467898e8559363b869

  • SHA256

    fe39bff12db02c5867842f98f3bd7a77717aa059a5860991cf125a07b15a9746

  • SHA512

    40011e29fe7cd686c0dff1504371a7d47eabef225656c86f951a415cf4a1b0f0a193c360fd1c2bd83094ffccff21f6adac7d3d2298a8c866712f67d34f1e12b6

  • SSDEEP

    49152:wQc81KnB/a/hNT/d9Ya8aesY3Ot4N7G/:wDta/hNT/d9n0etD/

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

      fe39bff12db02c5867842f98f3bd7a77717aa059a5860991cf125a07b15a9746

    • Size

      2.4MB

    • MD5

      d37dd534863c2b352b73c4fded3b8d73

    • SHA1

      b01158d381136a7901f8c1467898e8559363b869

    • SHA256

      fe39bff12db02c5867842f98f3bd7a77717aa059a5860991cf125a07b15a9746

    • SHA512

      40011e29fe7cd686c0dff1504371a7d47eabef225656c86f951a415cf4a1b0f0a193c360fd1c2bd83094ffccff21f6adac7d3d2298a8c866712f67d34f1e12b6

    • SSDEEP

      49152:wQc81KnB/a/hNT/d9Ya8aesY3Ot4N7G/:wDta/hNT/d9n0etD/

    • 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