Overview

overview

10

Static

static

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows10-ltsc_2021-x64

10

Sharing

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General

  • Target
    Client-built.exe
  • Size 899KB
  • Sample260826-lyhr4swfjc
  • SHA256 4519c7613fc98cf95f255beb778ec09473a393fb4f5e9cd6c7d5682b567eba16
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
quasardsc.gg/un1xdefense_evasiondiscoveryexecutionpersistencespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.5.1

Botnet

  • dsc.gg/un1x

C2

  • angel0chek.duckdns.org:1004

Mutex

  • b793e3e0-a400-4de4-b8c2-5204267d2218

Attributes
  • encryption_key

    CB770BFF9A5C5A8F92F2B4E2FE12549CF3DC3381

  • install_name

    OfficeUpdater.exe

  • key_salt

    5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382

  • log_directory

    Logs

  • reconnect_delay

    2997

  • startup_key

    Microsoft Updater

  • subdirectory

    MicrosoftOffice

Targets

    • Target
      Client-built.exe
    • Size 899KB
    • SHA256 4519c7613fc98cf95f255beb778ec09473a393fb4f5e9cd6c7d5682b567eba16
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    dsc.gg/un1xdefense_evasionexecutionquasarpersistencespywaretrojandiscovery

    • Family: 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks