General

  • Target

    95fb75d0917b761de1518262e7d1e61da659580d7b9d9b5afe51722036d0be98

  • Size

    2.0MB

  • Sample

    240526-esfx1afc25

  • MD5

    6a1c45584e26512459cc10d3ea2b7648

  • SHA1

    d682d915aa645a92b97a5a2cb2acf41fada3f45d

  • SHA256

    95fb75d0917b761de1518262e7d1e61da659580d7b9d9b5afe51722036d0be98

  • SHA512

    6b390712beda668d697bd1a47371c52a60ba931cd5783157f38f7b4f833ba25568388ae8bed0c5faedf4f014377bd17c8013a870114417cd447af84af37055d0

  • 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

      95fb75d0917b761de1518262e7d1e61da659580d7b9d9b5afe51722036d0be98

    • Size

      2.0MB

    • MD5

      6a1c45584e26512459cc10d3ea2b7648

    • SHA1

      d682d915aa645a92b97a5a2cb2acf41fada3f45d

    • SHA256

      95fb75d0917b761de1518262e7d1e61da659580d7b9d9b5afe51722036d0be98

    • SHA512

      6b390712beda668d697bd1a47371c52a60ba931cd5783157f38f7b4f833ba25568388ae8bed0c5faedf4f014377bd17c8013a870114417cd447af84af37055d0

    • 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