General

  • Target

    11bda3957b2fd86e57b1677149c0558686c11e31ae500f671d4d9a44f6e6f48f

  • Size

    2.0MB

  • Sample

    240526-tlwgfacb7x

  • MD5

    e22efc95638f4c4e07fd7daba5bd3154

  • SHA1

    db73b614e897241d5321dc46ec25a302958ecd84

  • SHA256

    11bda3957b2fd86e57b1677149c0558686c11e31ae500f671d4d9a44f6e6f48f

  • SHA512

    84dac88794f1692ccb88f09a6f8edff231e9524f79cd8af40414acdbacafbfe3fc1c79d9cc9a4a9190eb9cef02d23247129e8461875176840e96641375b75122

  • SSDEEP

    49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

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

      11bda3957b2fd86e57b1677149c0558686c11e31ae500f671d4d9a44f6e6f48f

    • Size

      2.0MB

    • MD5

      e22efc95638f4c4e07fd7daba5bd3154

    • SHA1

      db73b614e897241d5321dc46ec25a302958ecd84

    • SHA256

      11bda3957b2fd86e57b1677149c0558686c11e31ae500f671d4d9a44f6e6f48f

    • SHA512

      84dac88794f1692ccb88f09a6f8edff231e9524f79cd8af40414acdbacafbfe3fc1c79d9cc9a4a9190eb9cef02d23247129e8461875176840e96641375b75122

    • SSDEEP

      49152:s4K3x1vU2JtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex182tIuoITsdZ

    • 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 data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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