Overview

overview

10

Static

static

1

398d98b126...b4.exe

windows7-x64

10

398d98b126...b4.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    398d98b126f3924b8618fdbf11d52aad45a74cb2b70f8efa38592b8cb1aaadb4
  • Size 144KB
  • Sample230211-bwp4asaa3x
  • SHA256 398d98b126f3924b8618fdbf11d52aad45a74cb2b70f8efa38592b8cb1aaadb4
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasaroffice04persistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.0.0

Botnet

  • Office04

C2

  • spoofer.sytes.net:4782

Mutex

  • Xt4orhlt3APwEULq83

Attributes
  • encryption_key

    lm9tqqmq7KePP7IJgOau

  • install_name

    svchost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Cortana

  • subdirectory

    Microsoft

Targets

    • Target
      398d98b126f3924b8618fdbf11d52aad45a74cb2b70f8efa38592b8cb1aaadb4
    • Size 144KB
    • SHA256 398d98b126f3924b8618fdbf11d52aad45a74cb2b70f8efa38592b8cb1aaadb4
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasaroffice04persistencespywaretrojan

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks