General

  • Target

    81be9f936630ce74ce880862268ef9435ca6504f10d41afac1ad658c5f1c4da1

  • Size

    2.0MB

  • Sample

    240527-ezapkafh6v

  • MD5

    45b5d55effd212fd11e85008099854c7

  • SHA1

    b9e3fcec4742a0716b248bf3fc106c8c3f04a871

  • SHA256

    81be9f936630ce74ce880862268ef9435ca6504f10d41afac1ad658c5f1c4da1

  • SHA512

    7758046e7dabf3796108460dc45c001575cd3d78e3c574acf7d2c18a1c3ec84151afef54c9b035f4702d3f5f7411401d0be16c7ae42a58f8bcf1240016073cb3

  • SSDEEP

    49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

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

      81be9f936630ce74ce880862268ef9435ca6504f10d41afac1ad658c5f1c4da1

    • Size

      2.0MB

    • MD5

      45b5d55effd212fd11e85008099854c7

    • SHA1

      b9e3fcec4742a0716b248bf3fc106c8c3f04a871

    • SHA256

      81be9f936630ce74ce880862268ef9435ca6504f10d41afac1ad658c5f1c4da1

    • SHA512

      7758046e7dabf3796108460dc45c001575cd3d78e3c574acf7d2c18a1c3ec84151afef54c9b035f4702d3f5f7411401d0be16c7ae42a58f8bcf1240016073cb3

    • SSDEEP

      49152:OePpQEtJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEttIuoITsdZ

    • 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