Overview

overview

10

Static

static

10

4.exe

windows10-2004-x64

10

4.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    4.exe
  • Size 3.1MB
  • Sample260920-t49rsaythy
  • SHA256 c67ba858dfa5feab71d851b5ee432a4c7817c9c66d733e0cfdac7cb17c79ebf5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasaroffice04discoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • Office04

C2

  • 192.168.11.41:51879

  • 192.168.11.41:65338

  • 128.116.53.33:52610

  • 192.168.11.41:2177

  • 192.168.11.41:137

Mutex

  • aa4a2ba4-5541-49d5-938d-dcc66534489c

Attributes
  • encryption_key

    B0269B148C1775F4FBC2A4C271087C43E0AC4A02

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    RtkAudUService32

  • subdirectory

    tr-TN

Targets

    • Target
      4.exe
    • Size 3.1MB
    • SHA256 c67ba858dfa5feab71d851b5ee432a4c7817c9c66d733e0cfdac7cb17c79ebf5
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    office04discoveryexecutionquasarpersistencespywaretrojan

    • Family: Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar payload

    • Executes dropped EXE

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks