General

  • Target

    4035544b17ffa7d3dff6473f7116194d0409df80e8c5c94a88f1bf2614061808

  • Size

    2.0MB

  • Sample

    240525-qh3jssec26

  • MD5

    f820905db756699c0293b7b5d461db0a

  • SHA1

    8a8e665f5bd05f8fb43a2e1c54464c5cb77f6a02

  • SHA256

    4035544b17ffa7d3dff6473f7116194d0409df80e8c5c94a88f1bf2614061808

  • SHA512

    d15180f4ce9564fb5625e47cf8192e47bd0c9d80286cf77776e990501ad69bdb90c11c8fb35e19d4ac59c67af412f5d2a8043d40d672be9e5335ca18bd7c06d4

  • SSDEEP

    49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

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

      4035544b17ffa7d3dff6473f7116194d0409df80e8c5c94a88f1bf2614061808

    • Size

      2.0MB

    • MD5

      f820905db756699c0293b7b5d461db0a

    • SHA1

      8a8e665f5bd05f8fb43a2e1c54464c5cb77f6a02

    • SHA256

      4035544b17ffa7d3dff6473f7116194d0409df80e8c5c94a88f1bf2614061808

    • SHA512

      d15180f4ce9564fb5625e47cf8192e47bd0c9d80286cf77776e990501ad69bdb90c11c8fb35e19d4ac59c67af412f5d2a8043d40d672be9e5335ca18bd7c06d4

    • SSDEEP

      49152:s4K3x1vUCJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18CtIuoITsdZ

    • 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