General

  • Target

    6232fa431436485032139df9b297cf334a5cc096d0ac92edd007e3ae57de8a0f

  • Size

    2.4MB

  • Sample

    240523-2qlrsscb2s

  • MD5

    c1b08601db8549e2c9a0e375d42c995d

  • SHA1

    65969473ef27abdcbf8094dadda252fbbab0d1a0

  • SHA256

    6232fa431436485032139df9b297cf334a5cc096d0ac92edd007e3ae57de8a0f

  • SHA512

    0e4bcd1c6eb6ff3e84f3c8e4d43b1eaf90ac70810ba672795aeaa5c951b7c0111ad2f51c07b11f3735796deb23c4eacbed9507ed20d2029be50ada08af78baf3

  • SSDEEP

    49152:jxIRJF1HL+VdX68kU2JtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68d2tIuoITsdZ

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

      6232fa431436485032139df9b297cf334a5cc096d0ac92edd007e3ae57de8a0f

    • Size

      2.4MB

    • MD5

      c1b08601db8549e2c9a0e375d42c995d

    • SHA1

      65969473ef27abdcbf8094dadda252fbbab0d1a0

    • SHA256

      6232fa431436485032139df9b297cf334a5cc096d0ac92edd007e3ae57de8a0f

    • SHA512

      0e4bcd1c6eb6ff3e84f3c8e4d43b1eaf90ac70810ba672795aeaa5c951b7c0111ad2f51c07b11f3735796deb23c4eacbed9507ed20d2029be50ada08af78baf3

    • SSDEEP

      49152:jxIRJF1HL+VdX68kU2JtTF+TxMoxc1TU+j+dAzGwlrh:jEJF16dX68d2tIuoITsdZ

    • 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