General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    250115-ycb4natqfn

  • MD5

    e7b38e84926048dd156d4c246675823a

  • SHA1

    40ab7eaffb7b098e736ade0eee720856c3e38cd9

  • SHA256

    d49ea0eeb7f55bc51d0862c6a94cf0495f107122e6771d4dc4115fce5d9bfcb1

  • SHA512

    e74a37e088f36ad656b86907999c2178c7868803e964acc74cfe54fef6ae7e1f845ebad470655dd896c03d6679e9a7d5a07791bb2b796c6355bf989b57e3ba9f

  • SSDEEP

    49152:rvVG42pda6D+/PjlLOlg6yQipVhQg7vbR6LoGd8xTHHB72eh2NT:rvM42pda6D+/PjlLOlZyQipVh37K

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.208.1:7672

127.000.1:7672

192.168.208.1:37664

Mutex

43703048-944d-4b25-8c70-d875b0b3b227

Attributes
  • encryption_key

    62FBCC4DFDC2A6A90B45D09307BE1ECC156199ED

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      e7b38e84926048dd156d4c246675823a

    • SHA1

      40ab7eaffb7b098e736ade0eee720856c3e38cd9

    • SHA256

      d49ea0eeb7f55bc51d0862c6a94cf0495f107122e6771d4dc4115fce5d9bfcb1

    • SHA512

      e74a37e088f36ad656b86907999c2178c7868803e964acc74cfe54fef6ae7e1f845ebad470655dd896c03d6679e9a7d5a07791bb2b796c6355bf989b57e3ba9f

    • SSDEEP

      49152:rvVG42pda6D+/PjlLOlg6yQipVhQg7vbR6LoGd8xTHHB72eh2NT:rvM42pda6D+/PjlLOlZyQipVh37K

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks