Overview

overview

10

Static

static

Dados.chm

windows7-x64

10

Dados.chm

windows10-2004-x64

10

Sharing

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General

  • Target
    Dados.chm
  • Size 10KB
  • Sample221101-nr99wsbed3
  • SHA256 0dc188da43647e4b136efea24a5ee3ccceff0f05b887753466e6c336d7edce18
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarj4s0nspywaretrojan

Malware Config

Extracted

Language

  • hta

Source
URLs
  • hta.dropper

    http://pedrosvadeira.com.br/1.hta

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://52.187.50.165/site/att.txt

Extracted

Family

  • quasar

Version

  • 2.8.0.1

Botnet

  • j4s0n

C2

  • 24.152.39.240:5555

Mutex

  • HFC8KgbbsFCNX0usI7

Attributes
  • encryption_key

    hSs3OtaZiLZdsh2SJpZB

  • install_name

    Venom.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

Targets

    • Target
      Dados.chm
    • Size 10KB
    • SHA256 0dc188da43647e4b136efea24a5ee3ccceff0f05b887753466e6c336d7edce18
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarj4s0nspywaretrojan

    • Process spawned unexpected child process

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

    • 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.

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks