General

  • Target

    c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7

  • Size

    2.0MB

  • Sample

    240526-gty63shd5z

  • MD5

    1c247eb44241c97dca3219e49c652580

  • SHA1

    36b5a8f7196daa59528565b6db4a29de30f6e3c4

  • SHA256

    c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7

  • SHA512

    cbfa636806411ee0f8bcf1a5ea50c006a6b8abcbe1fbfbf96deb785fd6e37c300f6c8b5feebb442ee59cbb1014fafa3ff8de0f3ed4bec98b856a318657a8cc0c

  • SSDEEP

    49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

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

Targets

    • Target

      c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7

    • Size

      2.0MB

    • MD5

      1c247eb44241c97dca3219e49c652580

    • SHA1

      36b5a8f7196daa59528565b6db4a29de30f6e3c4

    • SHA256

      c923a4e85b3a36ed97745275e491167d050c15361fcafdcb5e17225b52503db7

    • SHA512

      cbfa636806411ee0f8bcf1a5ea50c006a6b8abcbe1fbfbf96deb785fd6e37c300f6c8b5feebb442ee59cbb1014fafa3ff8de0f3ed4bec98b856a318657a8cc0c

    • SSDEEP

      49152:s4K3x1vUiJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18itIuoITsdZ

    • 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