Overview

overview

10

Static

static

10

b2bplus.nl.exe

windows10-2004-x64

10

b2bplus.nl.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    b2bplus.nl.exe
  • Size 3.1MB
  • Sample260622-heve1sav4y
  • SHA256 fed1cef391c3a36f8baeef90acee6cf33e81122049a644cc4e44b08bd50711ef
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04executionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • b2bplus.nl:53

  • b2bplus.nl:80

  • b2bplus.nl:25

  • b2bplus.nl:22

  • b2bplus.nl:21

  • b2bplus.nl:8090

  • b2bplus.nl:7080

  • b2bplus.nl:443

  • b2bplus.nl:2525

  • b2bplus.nl:143

  • b2bplus.nl:993

  • b2bplus.nl:465

  • b2bplus.nl:587

  • www.b2bplus.nl:25

  • www.b2bplus.nl:80

  • www.b2bplus.nl:443

  • www.b2bplus.nl:8090

  • www.b2bplus.nl:7080

  • www.b2bplus.nl:2525

  • www.b2bplus.nl:465

Mutex

  • f9cda715-4cd6-4eb4-b3ff-d38953ca6636

Attributes
  • encryption_key

    1F31CD0582BA6FBDA903BF4F947CCB13B60528E3

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      b2bplus.nl.exe
    • Size 3.1MB
    • SHA256 fed1cef391c3a36f8baeef90acee6cf33e81122049a644cc4e44b08bd50711ef
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04executionquasarpersistencespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks