Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows10-ltsc 2021-x64

10

Client-built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    241224-t46p5asldj

  • MD5

    2df7f55c626ea8077ef2cc5ffd32dc38

  • SHA1

    93131a8d6128ea827f1f31ada4391f94bbc1dd06

  • SHA256

    58f7dda2165a44ddad0d441ba356a0626d1ad619d766a58008320ec5936cdb94

  • SHA512

    362bfea6ae2127df5da06904407286c0ed49846ec230ae149a46a4cdcdb101987963a406427283d409957427bdc57a77c3ac90f567b3d00ad561f025f10912cc

  • SSDEEP

    49152:ZvZI22SsaNYfdPBldt698dBcjHVi/2BxmgoGd5UTHHB72eh2NT:Zva22SsaNYfdPBldt6+dBcjHU/O

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

85.209.133.15:111

Mutex

95ddd19c-037b-4e62-8c64-298b31d663b8

Attributes
  • encryption_key

    43DE31297B50FED5B1E6867AE89B621C68EF71E2

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      2df7f55c626ea8077ef2cc5ffd32dc38

    • SHA1

      93131a8d6128ea827f1f31ada4391f94bbc1dd06

    • SHA256

      58f7dda2165a44ddad0d441ba356a0626d1ad619d766a58008320ec5936cdb94

    • SHA512

      362bfea6ae2127df5da06904407286c0ed49846ec230ae149a46a4cdcdb101987963a406427283d409957427bdc57a77c3ac90f567b3d00ad561f025f10912cc

    • SSDEEP

      49152:ZvZI22SsaNYfdPBldt698dBcjHVi/2BxmgoGd5UTHHB72eh2NT:Zva22SsaNYfdPBldt6+dBcjHU/O

    Score
    10/10
    quasaroffice04spywaretrojandiscovery

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

      trojanspywarequasar

    • Quasar family

      quasar

    • Quasar payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Tasks