General

  • Target

    SolaraBootstrapper.exe

  • Size

    3.1MB

  • Sample

    240722-jcxm2awdpm

  • MD5

    1188979dd3fb9b1d433da026f9489ba4

  • SHA1

    4da27aa94c329e3e3075a832013a191b3dc341c5

  • SHA256

    f622e2e5574ecd4c9fc9e518a59c445e3f163a1b752e00b6a2ca02ce9108586d

  • SHA512

    28b82b3a48d3b49b92582e47af374f87c4f4c2bf32851cf2e3922f7573f6ff399a4421cf8e6d512e0f863cf39d0572f88e6473ea7e640cc70ecd8eee2dc44618

  • SSDEEP

    49152:bvyI22SsaNYfdPBldt698dBcjHcP9wHMfdOoGdvZTHHB72eh2NT:bvf22SsaNYfdPBldt6+dBcjHcP9wJ/

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.254.166:4782

Mutex

d6b04272-e4a0-454d-92f8-0e055434ec16

Attributes
  • encryption_key

    C28613BFC53E0A950FB6D47EA69A78BFBB7B9B56

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      SolaraBootstrapper.exe

    • Size

      3.1MB

    • MD5

      1188979dd3fb9b1d433da026f9489ba4

    • SHA1

      4da27aa94c329e3e3075a832013a191b3dc341c5

    • SHA256

      f622e2e5574ecd4c9fc9e518a59c445e3f163a1b752e00b6a2ca02ce9108586d

    • SHA512

      28b82b3a48d3b49b92582e47af374f87c4f4c2bf32851cf2e3922f7573f6ff399a4421cf8e6d512e0f863cf39d0572f88e6473ea7e640cc70ecd8eee2dc44618

    • SSDEEP

      49152:bvyI22SsaNYfdPBldt698dBcjHcP9wHMfdOoGdvZTHHB72eh2NT:bvf22SsaNYfdPBldt6+dBcjHcP9wJ/

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks