Overview

overview

10

Static

static

10

Quasar.exe

windows10-2004-x64

10

Quasar.exe

windows10-ltsc_2021-x64

10

Quasar.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Quasar.exe
  • Size 3.1MB
  • Sample261111-kx44aaex6n
  • SHA256 c3146b456a2ee8270b9990b40367a35d0bc83e970974a1bf184d0a13b1a84e1c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarok365 clientdiscoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • OK365 Client

C2

  • extratorrent.unblockerproxy.top/:8080

  • www.extratorrent.unblockerproxy.top/:8080

  • app.extratorrent.unblockerproxy.top/:8080

  • c2.extratorrent.unblockerproxy.top/:8080

  • api.extratorrent.unblockerproxy.top/:8080

  • malware.extratorrent.unblockerproxy.top/:8080

  • backdoor.extratorrent.unblockerproxy.top/: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
      Quasar.exe
    • Size 3.1MB
    • SHA256 c3146b456a2ee8270b9990b40367a35d0bc83e970974a1bf184d0a13b1a84e1c
    • 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

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks