General

  • Target

    aeeb4854913db08ccbb09ab1c3f5052e39773864f4a77a0cd7ff8f4654d3aed0

  • Size

    1.9MB

  • Sample

    240528-atr97sfg2x

  • MD5

    5f65cc5ec4bae6512d7a7afb7d0b7a3a

  • SHA1

    be277daf9b4b1cb135727fae6e29882d6acafaf6

  • SHA256

    aeeb4854913db08ccbb09ab1c3f5052e39773864f4a77a0cd7ff8f4654d3aed0

  • SHA512

    6276b51d37474d66ff0fafab9d62ce7136a740b2034ccf02178906550bb13abffafc4a172d3f7eeecaa6fc4574dd4b6796f1dec7b954cdb59660175f1cdf4d74

  • SSDEEP

    49152:CdKfTn6v+JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn1tIuoITsdZ

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

      aeeb4854913db08ccbb09ab1c3f5052e39773864f4a77a0cd7ff8f4654d3aed0

    • Size

      1.9MB

    • MD5

      5f65cc5ec4bae6512d7a7afb7d0b7a3a

    • SHA1

      be277daf9b4b1cb135727fae6e29882d6acafaf6

    • SHA256

      aeeb4854913db08ccbb09ab1c3f5052e39773864f4a77a0cd7ff8f4654d3aed0

    • SHA512

      6276b51d37474d66ff0fafab9d62ce7136a740b2034ccf02178906550bb13abffafc4a172d3f7eeecaa6fc4574dd4b6796f1dec7b954cdb59660175f1cdf4d74

    • SSDEEP

      49152:CdKfTn6v+JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn1tIuoITsdZ

    • 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