Overview

overview

10

Static

static

10

Client-asduilt.exe

windows10-2004-x64

10

Client-asduilt.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Client-asduilt.exe
  • Size 3.1MB
  • Sample260111-brzryacw9e
  • SHA256 62c177478d0d30143fbf8f938c59bc2646e5a5e97572c1a0576c9867ca3bf8dd
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04persistencespywarestealertrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.1.71:4782

  • 90.165.55.41:4782

Mutex

  • 59f535e2-6357-4041-a09a-20f9927f1617

Attributes
  • encryption_key

    D3D8DC6A9D41A817B319484D943D3C86BE823650

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      Client-asduilt.exe
    • Size 3.1MB
    • SHA256 62c177478d0d30143fbf8f938c59bc2646e5a5e97572c1a0576c9867ca3bf8dd
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    office04quasarspywaretrojanpersistencestealer

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

      spywarestealer

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Drops desktop.ini file(s)

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks