General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    250101-28scasslcm

  • MD5

    351640042c68134bc37147809e764934

  • SHA1

    d56befbdb75ad0592151d38ff5c9dc746ec4e22f

  • SHA256

    a9c9bd256079b877e5b3f85d26312900ce865127e7d91e809ad745b306ab6a76

  • SHA512

    250caa5035b6283e6ddabb4b37a73c127266864913d98a271d5800327cd83817fb0cdbc52723e78e69f04b6f4e9aa5f4d477c173a3021bcc7ddec8fd3b6ff532

  • SSDEEP

    49152:Dv3I22SsaNYfdPBldt698dBcjHhiukDvJ9IoGdS1THHB72eh2NT:Dv422SsaNYfdPBldt6+dBcjHXkgC

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

first

C2

ZyloX-52247.portmap.host:4782

Mutex

44382739-6e8e-4a03-b838-6ed9f8f4bf36

Attributes
  • encryption_key

    59DD70006F5E5424ACBA442199524AA9815F439E

  • install_name

    Calculator.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    RtkAudUService86

  • subdirectory

    Calculator_UWP

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      351640042c68134bc37147809e764934

    • SHA1

      d56befbdb75ad0592151d38ff5c9dc746ec4e22f

    • SHA256

      a9c9bd256079b877e5b3f85d26312900ce865127e7d91e809ad745b306ab6a76

    • SHA512

      250caa5035b6283e6ddabb4b37a73c127266864913d98a271d5800327cd83817fb0cdbc52723e78e69f04b6f4e9aa5f4d477c173a3021bcc7ddec8fd3b6ff532

    • SSDEEP

      49152:Dv3I22SsaNYfdPBldt698dBcjHhiukDvJ9IoGdS1THHB72eh2NT:Dv422SsaNYfdPBldt6+dBcjHXkgC

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks