Overview

overview

10

Static

static

10

268501cbc4...7a.exe

windows10-2004-x64

10

268501cbc4...7a.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a.exe
  • Size 348KB
  • Sample250820-wjcbwsvxbt
  • SHA256 268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • jul5050quasa.duckdns.org:5050

  • jul5050quasab.duckdns.org:5050

  • jul5050quasac.duckdns.org:5050

  • jul5050quasad.duckdns.org:5050

  • jul5050quasae.duckdns.org:5050

  • jul5050quasaf.duckdns.org:5050

Mutex

  • QSR_MUTEX_HAw6LhtQ1vnPbRMEnz

Attributes
  • encryption_key

    EQ989DgkPSn9nR6JdT1p

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a.exe
    • Size 348KB
    • SHA256 268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04discoveryspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Checks computer location settings

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks