General

  • Target

    a6f5895212d918b9af56c4a0d1d94d1c793cf5ff34059a46919113c9a02439e7

  • Size

    2.4MB

  • Sample

    240601-3mdgpaah7z

  • MD5

    55a8f4dd0f2b681a148be45eec99254f

  • SHA1

    3022f9ac705074f6e7c58efe3cf8a9cc4297ccd6

  • SHA256

    a6f5895212d918b9af56c4a0d1d94d1c793cf5ff34059a46919113c9a02439e7

  • SHA512

    9cf210a6061bf845c5ad2ce6e911e04f4ac5d54aeb69bb7e8a64cee96df1a618ffc0b7b7166fcc7efd4bf97102b44dcf4a1e64fe0454321e94270bf23612a851

  • SSDEEP

    49152:wQc81KnB/a/hNT/dZYa8aesY3Ot4N7G/:wDta/hNT/dZn0etD/

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

      a6f5895212d918b9af56c4a0d1d94d1c793cf5ff34059a46919113c9a02439e7

    • Size

      2.4MB

    • MD5

      55a8f4dd0f2b681a148be45eec99254f

    • SHA1

      3022f9ac705074f6e7c58efe3cf8a9cc4297ccd6

    • SHA256

      a6f5895212d918b9af56c4a0d1d94d1c793cf5ff34059a46919113c9a02439e7

    • SHA512

      9cf210a6061bf845c5ad2ce6e911e04f4ac5d54aeb69bb7e8a64cee96df1a618ffc0b7b7166fcc7efd4bf97102b44dcf4a1e64fe0454321e94270bf23612a851

    • SSDEEP

      49152:wQc81KnB/a/hNT/dZYa8aesY3Ot4N7G/:wDta/hNT/dZn0etD/

    • 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