Overview

overview

10

Static

static

1

DIMARCA.AN...E.4.js

windows10-2004-x64

10

DIMARCA.AN...E.4.js

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    DIMARCA.ANDREA.-.CAUTELA.DE.CITACION.ENVIADA.NOBUEMBRE.4.js
  • Size 9.7MB
  • Sample261104-y22evads3s
  • SHA256 4fa3de8686d95fa175ccb200e5ae02b39fc318e94679b9ad7aca0fc7477c4535
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryexecutionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Office04

C2

  • 9.247.136.190:1885

Mutex

  • QSR_MUTEX_wr4JZ9iotjvZmdTtNz

Attributes
  • encryption_key

    zxgjCJX4CMnMNishmV6A

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      DIMARCA.ANDREA.-.CAUTELA.DE.CITACION.ENVIADA.NOBUEMBRE.4.js
    • Size 9.7MB
    • SHA256 4fa3de8686d95fa175ccb200e5ae02b39fc318e94679b9ad7aca0fc7477c4535
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryexecutionquasarspywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Quasar payload

    • Looks up external IP address via web service

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

      discovery

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks