General

  • Target

    3cf4f19b7c69135acb3c4c9bb9cdfb90.bin

  • Size

    1.2MB

  • Sample

    240805-brcx6swglh

  • MD5

    cec4c2e35dfbac24d9f83129f730478c

  • SHA1

    6241695b6388e17fa1fd716faabd8611271c2f64

  • SHA256

    15a29041d43b33af3f35611c8c8d2d398f864b671bf9235afdef9751e0815b7a

  • SHA512

    a6910a5211471a6528e54f98bafebe7cc925f24b89bf0d9864b2030ebe3458e335002da1fe254a5412725aa9f1c90569dee3c488ee51cc51d7970b6bff10e80e

  • SSDEEP

    24576:wk9MsRmZlKCi9hKEdVdKvLVTtPaXsvdq/V8qpWMnDQGazLVsmnMYHy1:wqxO1eKEzdWVtSXl/YpGa/VlMYS1

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

nohchy-47404.portmap.host:47404

Mutex

1a1e174b-dbf8-49ad-9b43-2cfbb233a6d9

Attributes
  • encryption_key

    795CDD46D2CDD422BE523F263B64E03D8B6AAD42

  • install_name

    SolaraExecutor.exe

  • log_directory

    Logs

  • reconnect_delay

    2000

  • startup_key

    RtkAudUService64

  • subdirectory

    SubDir

Targets

    • Target

      6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf.exe

    • Size

      3.1MB

    • MD5

      3cf4f19b7c69135acb3c4c9bb9cdfb90

    • SHA1

      e2b5a40dd2abfa03671fde7c4e74f9b2846f989f

    • SHA256

      6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf

    • SHA512

      4b4237eaf8ca42456b5ce183c83ba3f0cd382dfa5ae775a9433db4f7091ac0295267e80fcd93861a1022288ebf7c3a9d3b7caa07423f75c0b685812bf97996cd

    • SSDEEP

      49152:DvehBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkaxAtueYFoGdXTHHB72eh2NT:DvAt2d5aKCuVPzlEmVQ0wvwf+tuee

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks