Overview

overview

10

Static

static

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample260820-syb3wszfkc
  • SHA256 21347b7363d9f71708c0ffa9b36e97c30a0883ef9b93c72fa56d6fdb72c351e3
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04executionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.254.118:4782

Mutex

  • 67ba96ac-1650-49ff-b4a0-5ad08c233c72

Attributes
  • encryption_key

    5F639A1BCBC68006F766068FA35792A457A9BBEE

  • install_name

    microsoft.sql.server.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    microsoft_keyboard

  • reconnect_delay

    3000

  • startup_key

    microsoft

  • subdirectory

    microsoft

Targets

    • Target
      Client-built.exe
    • Size 3.1MB
    • SHA256 21347b7363d9f71708c0ffa9b36e97c30a0883ef9b93c72fa56d6fdb72c351e3
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04executionquasarpersistencespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks