General

  • Target

    a50d6a4234b19bf730cecdb1c2c4b5476fff2efe0f1637dfc01950e50c074a8e

  • Size

    2.0MB

  • Sample

    240526-2g8j7see5x

  • MD5

    d244227811f2d57f207d6d57b3a6a83f

  • SHA1

    ea2dde0b31cfd7b1f5d7e7ee2f9e975d0ae44510

  • SHA256

    a50d6a4234b19bf730cecdb1c2c4b5476fff2efe0f1637dfc01950e50c074a8e

  • SHA512

    31777bbd5f505e39d1b2668461e9293f1f5a85a7269477deee4dc177a91aa056836be4e0a51b503e290dec6115000f7da8b7920d5541c781bc9c774498424fff

  • SSDEEP

    49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

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

      a50d6a4234b19bf730cecdb1c2c4b5476fff2efe0f1637dfc01950e50c074a8e

    • Size

      2.0MB

    • MD5

      d244227811f2d57f207d6d57b3a6a83f

    • SHA1

      ea2dde0b31cfd7b1f5d7e7ee2f9e975d0ae44510

    • SHA256

      a50d6a4234b19bf730cecdb1c2c4b5476fff2efe0f1637dfc01950e50c074a8e

    • SHA512

      31777bbd5f505e39d1b2668461e9293f1f5a85a7269477deee4dc177a91aa056836be4e0a51b503e290dec6115000f7da8b7920d5541c781bc9c774498424fff

    • SSDEEP

      49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

    • 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