Overview

overview

10

Static

static

10

ko66 final.exe

windows10-2004-x64

10

ko66 final.exe

windows10-ltsc_2021-x64

10

ko66 final.exe

windows11-21h2-x64

10

ko66 final.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    ko66 final.exe
  • Size 3.1MB
  • Sample261111-hca9csfa98
  • SHA256 79f9ea4763751f7a7613fd8fd2c72a8834c8f1a7cda2984ef18c0705ba79a074
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarok365 clientdiscoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • OK365 Client

C2

  • ko66.asia:8080

  • api.ko66.asia:8080

  • app.ko66.asia:8080

  • www.ko66.asia:8080

  • c2.ko66.asia:8080

  • malware.ko66.asia:8080

  • backdoor.ko66.asia:8080

Mutex

  • 3cb6f7ce-f521-4677-b078-01e1d892b28d

Attributes
  • encryption_key

    71514463CA895B84E7E6B4A4FC68A8243476E095

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    100

  • startup_key

    dkmm

  • subdirectory

    SubDir

Targets

    • Target
      ko66 final.exe
    • Size 3.1MB
    • SHA256 79f9ea4763751f7a7613fd8fd2c72a8834c8f1a7cda2984ef18c0705ba79a074
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    ok365 clientdiscoveryexecutionquasarpersistencespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Tasks