Overview

overview

10

Static

static

10

Client-built.exe

windows10-1703-x64

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows11-21h2-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    Client-built.exe
  • Size 3.1MB
  • Sample240331-azcrpsba34
  • SHA256 f2e04196e1353ad216e077e0aeb2e1ab8ee93b8b16b205422b4cc6d8adc50cc2
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarrattedspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Ratted

C2

  • 140.238.91.110:44867

Mutex

  • be049c71-d631-4f68-8b3e-8e01081f2340

Attributes
  • encryption_key

    AA883CE7347A3543F81EBCDE3BBF3BFC9C60344E

  • install_name

    WOS64UPD.exe

  • log_directory

    Windows Update Logs

  • reconnect_delay

    3000

  • startup_key

    Windows Updater

  • subdirectory

    Windows

Targets

    • Target
      Client-built.exe
    • Size 3.1MB
    • SHA256 f2e04196e1353ad216e077e0aeb2e1ab8ee93b8b16b205422b4cc6d8adc50cc2
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarrattedspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Tasks