General

  • Target

    497960e1fdb8af14899674be0c997f9858384261945dbb91e8b28ae0e174cb6f.exe

  • Size

    13.3MB

  • Sample

    241121-gjn85ayrb1

  • MD5

    0d6982311c8a21313994773c99380dfb

  • SHA1

    d8a6abfbdf3fe52598f570abeed3b272b10484bd

  • SHA256

    497960e1fdb8af14899674be0c997f9858384261945dbb91e8b28ae0e174cb6f

  • SHA512

    47b4c7f9a8a49ab067d4214d6cb73277bc56f7e671d3ef3c38ca8d845c65dbf2303e083294d71d68bf4348b87558141d4d3281d959d262efe56b29a87e5437c4

  • SSDEEP

    49152:Kqsm55NYMPrb/T7vO90dL3BmAFd4A64nsfJlFngTR55I7NLz1S:Kq95TUGPf

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

COM Surrogate

C2

10.8.1.66:8869

Mutex

119b9028-5664-4725-b2c1-1e4eaf743d68

Attributes
  • encryption_key

    B0092D1E1BA8BCBB825AA0760094E03D6D52E169

  • install_name

    3388.exe

  • log_directory

    COMLogs

  • reconnect_delay

    5000

  • startup_key

    COM Surrogate

Targets

    • Target

      497960e1fdb8af14899674be0c997f9858384261945dbb91e8b28ae0e174cb6f.exe

    • Size

      13.3MB

    • MD5

      0d6982311c8a21313994773c99380dfb

    • SHA1

      d8a6abfbdf3fe52598f570abeed3b272b10484bd

    • SHA256

      497960e1fdb8af14899674be0c997f9858384261945dbb91e8b28ae0e174cb6f

    • SHA512

      47b4c7f9a8a49ab067d4214d6cb73277bc56f7e671d3ef3c38ca8d845c65dbf2303e083294d71d68bf4348b87558141d4d3281d959d262efe56b29a87e5437c4

    • SSDEEP

      49152:Kqsm55NYMPrb/T7vO90dL3BmAFd4A64nsfJlFngTR55I7NLz1S:Kq95TUGPf

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks