General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    250101-3aaj9sslgn

  • MD5

    00cafff0e897b2ac4d0bb4ea8171f87a

  • SHA1

    fa6224090a7a53f328f7bf74072776ce991f01bb

  • SHA256

    71db00e41487326acc2eb737a22faa26011d78ba242c408b108b0f7b8124b9f0

  • SHA512

    d4fb8277d5b48176542f318eaf9f202a12cc8a3a3bc825245bcda73ea78c6e4c2d6be2013901e5cb1c369f8eb86934bb4990781fd7b60681928e447761cc6979

  • SSDEEP

    49152:7v3lL26AaNeWgPhlmVqvMQ7XSKQERJ6BbR3LoGd6THHB72eh2NT:7v1L26AaNeWgPhlmVqkQ7XSKQERJ6j

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

first

C2

quasartestingxxx.hopto.org: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

      00cafff0e897b2ac4d0bb4ea8171f87a

    • SHA1

      fa6224090a7a53f328f7bf74072776ce991f01bb

    • SHA256

      71db00e41487326acc2eb737a22faa26011d78ba242c408b108b0f7b8124b9f0

    • SHA512

      d4fb8277d5b48176542f318eaf9f202a12cc8a3a3bc825245bcda73ea78c6e4c2d6be2013901e5cb1c369f8eb86934bb4990781fd7b60681928e447761cc6979

    • SSDEEP

      49152:7v3lL26AaNeWgPhlmVqvMQ7XSKQERJ6BbR3LoGd6THHB72eh2NT:7v1L26AaNeWgPhlmVqkQ7XSKQERJ6j

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

MITRE ATT&CK Enterprise v15

Tasks