General

  • Target

    1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211

  • Size

    2.0MB

  • Sample

    240525-fz4s3sfe7y

  • MD5

    a47e621ad2578c0e8642ee28cd603baa

  • SHA1

    6c34d8037b082f90aad1d23c6bf44e48abf43d6a

  • SHA256

    1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211

  • SHA512

    4012a083bd28fe26049a31ef6bd230c5f4531330bcdd8100f890117d7cdb8b85b4f69a389a6e539737ea4e0af7effd13485d96a9d287b0fd4948e207d99fb230

  • SSDEEP

    49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ

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

      1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211

    • Size

      2.0MB

    • MD5

      a47e621ad2578c0e8642ee28cd603baa

    • SHA1

      6c34d8037b082f90aad1d23c6bf44e48abf43d6a

    • SHA256

      1538db27ed4e24eb0ab732ce0ca76583cec960a9854d9379f8b130378f236211

    • SHA512

      4012a083bd28fe26049a31ef6bd230c5f4531330bcdd8100f890117d7cdb8b85b4f69a389a6e539737ea4e0af7effd13485d96a9d287b0fd4948e207d99fb230

    • SSDEEP

      49152:s4K3x1vUOJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18OtIuoITsdZ

    • 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