Overview

overview

10

Static

static

10

fbc526c8f2...b4.exe

windows7-x64

10

fbc526c8f2...b4.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4.exe
  • Size 348KB
  • Sample240406-b851aahd94
  • SHA256 fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04spywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • promesasalvaro1.duckdns.org:4782

Mutex

  • QSR_MUTEX_l1M93VuqIyiH8hEQ4I

Attributes
  • encryption_key

    2g2JgGNmrJPJ7nSHkWmk

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4.exe
    • Size 348KB
    • SHA256 fbc526c8f283b181391aa13ca98e82a99859aeef3f0fb7ef7a0ed155392663b4
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04spywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects executables containing common artifacts observed in infostealers

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Matrix

Tasks