General

  • Target

    c693eac7b0e1be63adddfb4ba8e1cfd5c95aa628f7dc7fc22d38de9d3107ae31

  • Size

    1.9MB

  • Sample

    240527-1eennsag7v

  • MD5

    b2183f209872fd71401652d7e0613fcd

  • SHA1

    9b4d45554a1f83a5fb16e54396a17d0c22b8b760

  • SHA256

    c693eac7b0e1be63adddfb4ba8e1cfd5c95aa628f7dc7fc22d38de9d3107ae31

  • SHA512

    e63793b0a615a471dd7e793d45ca44f5580ac5fd8982f7c6c2b40ed3e23281574009523ceb173bb468a3546a436f82dd1559ece28548265880736a4272096553

  • SSDEEP

    49152:CdKfTn6vaJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnBtIuoITsdZ

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

      c693eac7b0e1be63adddfb4ba8e1cfd5c95aa628f7dc7fc22d38de9d3107ae31

    • Size

      1.9MB

    • MD5

      b2183f209872fd71401652d7e0613fcd

    • SHA1

      9b4d45554a1f83a5fb16e54396a17d0c22b8b760

    • SHA256

      c693eac7b0e1be63adddfb4ba8e1cfd5c95aa628f7dc7fc22d38de9d3107ae31

    • SHA512

      e63793b0a615a471dd7e793d45ca44f5580ac5fd8982f7c6c2b40ed3e23281574009523ceb173bb468a3546a436f82dd1559ece28548265880736a4272096553

    • SSDEEP

      49152:CdKfTn6vaJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnBtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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