Overview

overview

10

Static

static

10

Client-built.exe

windows10-1703-x64

10

Client-built.exe

windows10-2004-x64

10

Client-built.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    241017-3xv5gswhmj

  • MD5

    32bac0be7a9c9bdd93b8b708f47f1313

  • SHA1

    1f0d7dd2e310613336fa569d3651a394ddb305fe

  • SHA256

    9828991298eb16c8df48b48dde0a056856f41c62ca4c694d86334cde1645e07c

  • SHA512

    8d797936672817abeab907c15715cf38e57eed41399c26f2af8171631d53d16d2bd693568e1b6b5a16c251f7ac030d5826a4784a4a79030753be407e794c0fb6

  • SSDEEP

    49152:djKqzUIZA0404kub/lFqkIFFIJHZ541JOOoGVJiTHHB72eh2NT:djlzUq3404kub/lFqkIFFIJHZ5u

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Name123forreal-31171.portmap.host:31171

Mutex

f9634259-eba6-40ac-8644-2c8e433257e9

Attributes
  • encryption_key

    5FD1DA98B24B21C2214C328FD3F0A48F15BBCD2B

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Window Defender Startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      32bac0be7a9c9bdd93b8b708f47f1313

    • SHA1

      1f0d7dd2e310613336fa569d3651a394ddb305fe

    • SHA256

      9828991298eb16c8df48b48dde0a056856f41c62ca4c694d86334cde1645e07c

    • SHA512

      8d797936672817abeab907c15715cf38e57eed41399c26f2af8171631d53d16d2bd693568e1b6b5a16c251f7ac030d5826a4784a4a79030753be407e794c0fb6

    • SSDEEP

      49152:djKqzUIZA0404kub/lFqkIFFIJHZ541JOOoGVJiTHHB72eh2NT:djlzUq3404kub/lFqkIFFIJHZ5u

    Score
    10/10
    quasaroffice04discoveryspywaretrojan

    • 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

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v15

Tasks