Overview

overview

10

Static

static

1

pfp.png

windows10-2004-x64

10

Sharing

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General

  • Target
    pfp.png
  • Size 1KB
  • Sample240218-aeltwacd68
  • SHA256 3d3b3393ae42fc9e0db84a9cc3c84d85b8ca87bbb5537bd38fd9b4bcbebbca08
  • MD5 SHA1 SHA512
Score
10/10
quasaroffice04discoverypersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 89.149.23.59:4782

Mutex

  • 5e17ece4-1fd0-4a9d-83e2-137062313c71

Attributes
  • encryption_key

    7638D8CD9EA925658D5513D543F4F1BDD35D820D

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target
      pfp.png
    • Size 1KB
    • SHA256 3d3b3393ae42fc9e0db84a9cc3c84d85b8ca87bbb5537bd38fd9b4bcbebbca08
    • MD5 SHA1 SHA512
    Score
    10/10
    quasaroffice04discoverypersistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

      persistence

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks