General

  • Target

    2368b0e938ac282ed3e777770bd12d22439739dd8a43d545da37160edd694674

  • Size

    1.9MB

  • Sample

    240527-31pf4sga69

  • MD5

    51120d827ab68238de2e5ac82e399af5

  • SHA1

    896e7ffe123e58310a0b6ccc34da01405d0256cc

  • SHA256

    2368b0e938ac282ed3e777770bd12d22439739dd8a43d545da37160edd694674

  • SHA512

    836a5d4fdd2ebe03f619ebb4579921610251007b9ef411eefd7d9cbf60b2cb98a42f8abf2ea61e5c16dca35086c33790e2d06a6129bdf2aec1c6b21860ce0781

  • SSDEEP

    49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnVtIuoITsdZ

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

      2368b0e938ac282ed3e777770bd12d22439739dd8a43d545da37160edd694674

    • Size

      1.9MB

    • MD5

      51120d827ab68238de2e5ac82e399af5

    • SHA1

      896e7ffe123e58310a0b6ccc34da01405d0256cc

    • SHA256

      2368b0e938ac282ed3e777770bd12d22439739dd8a43d545da37160edd694674

    • SHA512

      836a5d4fdd2ebe03f619ebb4579921610251007b9ef411eefd7d9cbf60b2cb98a42f8abf2ea61e5c16dca35086c33790e2d06a6129bdf2aec1c6b21860ce0781

    • SSDEEP

      49152:CdKfTn6vmJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnVtIuoITsdZ

    • 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