Overview

overview

10

Static

static

1

558_return.js

windows7-x64

10

558_return.js

windows10-2004-x64

10

Sharing

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General

  • Target
    558_return.js
  • Size 5KB
  • Sample240319-nv5tksbb89
  • SHA256 ee8d84e3da3e1334daf11ef37d7ec7be0061402f9df2fb3d33c969ba1ef77cc8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarnovotrampo2persistencespywaretrojan

Malware Config

Extracted

Language

  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://pt.textbin.net/download/zbbh8tfbo9

Extracted

Family

  • quasar

Version

  • 2.8.0.1

Botnet

  • NovoTrampo2

C2

  • 54.39.233.85:5552

Mutex

  • 9lbgWMCOyBXLpD2GFc

Attributes
  • encryption_key

    i3BYRN7AwNMBqQArRApz

  • install_name

    Venom.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Venom Client Startup

Targets

    • Target
      558_return.js
    • Size 5KB
    • SHA256 ee8d84e3da3e1334daf11ef37d7ec7be0061402f9df2fb3d33c969ba1ef77cc8
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarnovotrampo2persistencespywaretrojan

    • 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.

    • Adds Run key to start application

      persistence

    • 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