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General

  • Target

    61c8ae9a56d98e1b23591deba30b0c3df73657b1538da56255337e81338380e6

  • Size

    2.1MB

  • Sample

    240523-3wnzsaea23

  • MD5

    6e4c4c16eb0a8ace6eff45bbf4af78b0

  • SHA1

    42f77ba20d965dd92b11b6de3daee169145ecfbd

  • SHA256

    61c8ae9a56d98e1b23591deba30b0c3df73657b1538da56255337e81338380e6

  • SHA512

    db8609ce4490594e576cb1c9991864ab259fa84f1879105bc10048b752605081bb42b4782cd6fcffcfc881ca75915e45e7eaba602cb2591b977f9500fbdffe53

  • SSDEEP

    49152:N6uDuaS9refe4JtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9L4tIuoITsdZ

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

      61c8ae9a56d98e1b23591deba30b0c3df73657b1538da56255337e81338380e6

    • Size

      2.1MB

    • MD5

      6e4c4c16eb0a8ace6eff45bbf4af78b0

    • SHA1

      42f77ba20d965dd92b11b6de3daee169145ecfbd

    • SHA256

      61c8ae9a56d98e1b23591deba30b0c3df73657b1538da56255337e81338380e6

    • SHA512

      db8609ce4490594e576cb1c9991864ab259fa84f1879105bc10048b752605081bb42b4782cd6fcffcfc881ca75915e45e7eaba602cb2591b977f9500fbdffe53

    • SSDEEP

      49152:N6uDuaS9refe4JtTF+TxMoxc1TU+j+dAzGwlrh:N6uKb9L4tIuoITsdZ

    • 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

    • Loads dropped DLL

    • 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