Overview

overview

10

Static

static

10

ShadowClient.exe

windows10-2004-x64

10

ShadowClient.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    ShadowClient.exe
  • Size 2.1MB
  • Sample260330-ar1tkae12n
  • SHA256 240e2575f20c75c6b5e2ea69bc0f0d9675ffd3fea315ca818bcbee2572ee972f
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasarshadowdefense_evasionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 2.6.4.0

Botnet

  • Shadow

C2

  • 151.245.112.70:8990

Mutex

  • 4c7e33e6-3f73-4b4c-a411-89fe63cdfa1e

Attributes
  • encryption_key

    97DC71A09A26EAF63C56B6FF2BA582AA3A994D6F

  • install_name

    $77Client.exe

  • key_salt

    5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Shadow Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      ShadowClient.exe
    • Size 2.1MB
    • SHA256 240e2575f20c75c6b5e2ea69bc0f0d9675ffd3fea315ca818bcbee2572ee972f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    shadowdefense_evasionquasarspywaretrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Looks for VirtualBox Guest Additions in registry

      defense_evasion

    • Looks for VMWare Tools registry key

      defense_evasion

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks