General

  • Target

    e1820daea835d2d27a214317209f4da4a53b795c66e9f4205e90c5d1db8dc238

  • Size

    2.0MB

  • Sample

    240525-1zv66aca91

  • MD5

    ce54cb4decf63e78d5d514a2d97e00ee

  • SHA1

    3eb8e9e2cc7e4fc7c6963e9528386b31414676f5

  • SHA256

    e1820daea835d2d27a214317209f4da4a53b795c66e9f4205e90c5d1db8dc238

  • SHA512

    468046e483a57f63e93c986e5cb9cd5038a35ce047ad32db64151d1d32dc8bdb53d7bd651ddfaf48dde93a5a5f57864ac759c32b9316b75416253a76a42331fc

  • SSDEEP

    49152:s4K3x1vUWJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18WtIuoITsdZ

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

      e1820daea835d2d27a214317209f4da4a53b795c66e9f4205e90c5d1db8dc238

    • Size

      2.0MB

    • MD5

      ce54cb4decf63e78d5d514a2d97e00ee

    • SHA1

      3eb8e9e2cc7e4fc7c6963e9528386b31414676f5

    • SHA256

      e1820daea835d2d27a214317209f4da4a53b795c66e9f4205e90c5d1db8dc238

    • SHA512

      468046e483a57f63e93c986e5cb9cd5038a35ce047ad32db64151d1d32dc8bdb53d7bd651ddfaf48dde93a5a5f57864ac759c32b9316b75416253a76a42331fc

    • SSDEEP

      49152:s4K3x1vUWJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18WtIuoITsdZ

    • 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