General

  • Target

    4426a5cf54e378fa29a5d8ef3c0ff364d9b066cb7cdc6ca4ac918c0d06e27f3f

  • Size

    2.0MB

  • Sample

    240525-exv8gsed53

  • MD5

    d89013bc76d63968749304ffc837bde4

  • SHA1

    08d5095492316769af93ef0b417db227a7347e5c

  • SHA256

    4426a5cf54e378fa29a5d8ef3c0ff364d9b066cb7cdc6ca4ac918c0d06e27f3f

  • SHA512

    c7948e9ece15a2dfb1b44e29d4c7cc6723ae585a3e1680a15f6d49f2588ca4a77aace56d0ddfadbf90cf8118e42907c02493938529261e4615f87e5a01d70eba

  • 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

      4426a5cf54e378fa29a5d8ef3c0ff364d9b066cb7cdc6ca4ac918c0d06e27f3f

    • Size

      2.0MB

    • MD5

      d89013bc76d63968749304ffc837bde4

    • SHA1

      08d5095492316769af93ef0b417db227a7347e5c

    • SHA256

      4426a5cf54e378fa29a5d8ef3c0ff364d9b066cb7cdc6ca4ac918c0d06e27f3f

    • SHA512

      c7948e9ece15a2dfb1b44e29d4c7cc6723ae585a3e1680a15f6d49f2588ca4a77aace56d0ddfadbf90cf8118e42907c02493938529261e4615f87e5a01d70eba

    • 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

    • 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