Overview

overview

10

Static

static

1

Comprovant...8a3.js

windows7-x64

8

Comprovant...8a3.js

windows10-2004-x64

10

Sharing

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General

  • Target
    Comprovante-Pagamento_66a04578f18a3.js
  • Size 14KB
  • Sample240724-aebc5swfmk
  • SHA256 8f3478dc58734aa71c8f670478db1df0306c31dbe318ed1907b3e3c29705e904
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarj4s0nツdiscoveryexecutionspywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 2.8.0.1

Botnet

  • j4s0nツ

C2

  • 191.96.79.79:5552

Mutex

  • k0xu0yaV18JcyOu4RW

Attributes
  • encryption_key

    dfDMgawnkTln5Mq1lzTq

  • install_name

    Venom.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

Targets

    • Target
      Comprovante-Pagamento_66a04578f18a3.js
    • Size 14KB
    • SHA256 8f3478dc58734aa71c8f670478db1df0306c31dbe318ed1907b3e3c29705e904
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    executionquasarj4s0nツdiscoveryspywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Blocklisted process makes network request

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks