Overview

overview

10

Static

static

3

b17c1605a8...2f.exe

windows10-2004-x64

10

b17c1605a8...2f.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    b17c1605a8564b9772a2a90db59803ce70a2dbaeefcb3a7aedec732b87146b2f.exe
  • Size 5.3MB
  • Sample260218-t2bf7ses6f
  • SHA256 b17c1605a8564b9772a2a90db59803ce70a2dbaeefcb3a7aedec732b87146b2f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarwelcomediscoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • WELCOME

C2

  • cbzr-98pq1.ydns.eu:4045

  • code1.ydns.eu:9302

Mutex

  • 0235e291-5d04-4fa3-932c-869aeec5143W99

Attributes
  • encryption_key

    3145298725BA5E0DD56E87FFE3F8898EA81E6EDA

  • install_name

    Notepad.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    6000

  • startup_key

    Notepad

  • subdirectory

    System32

Targets

    • Target
      b17c1605a8564b9772a2a90db59803ce70a2dbaeefcb3a7aedec732b87146b2f.exe
    • Size 5.3MB
    • SHA256 b17c1605a8564b9772a2a90db59803ce70a2dbaeefcb3a7aedec732b87146b2f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    welcomediscoveryexecutionquasarpersistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks