Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    240426-vq7wpsgc64

  • MD5

    1fb05ef820095ff5e3e2b983f961ab7d

  • SHA1

    7bcf182863f90623cbf6d421edf4ef140d7088a1

  • SHA256

    6cf21856443fdd0c0c6e9b65bd641b3d20449f54247010899d2dcfbadeecce73

  • SHA512

    c2c1191023fde2bed2c53e8a643fc99832aa7b2ee3e7be5f54a423123db0f22ea2d9f67dac924116eedfdadf93ee29c79a9945999cd06e30ee7c976653cb7bb7

  • SSDEEP

    49152:ivBt62XlaSFNWPjljiFa2RoUYIR/xNESEmk/iiLoGdUTHHB72eh2NT:ivr62XlaSFNWPjljiFXRoUYIhxRs

Score
10/10
quasaroffice spywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

office

C2

2.tcp.eu.ngrok.io:16096

Mutex

755f883f-4d58-4349-bc9e-f21c4e163b6f

Attributes
  • encryption_key

    EE65D8F2E429F4900E3A17963595716D863A2455

  • install_name

    office.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    office startup

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      1fb05ef820095ff5e3e2b983f961ab7d

    • SHA1

      7bcf182863f90623cbf6d421edf4ef140d7088a1

    • SHA256

      6cf21856443fdd0c0c6e9b65bd641b3d20449f54247010899d2dcfbadeecce73

    • SHA512

      c2c1191023fde2bed2c53e8a643fc99832aa7b2ee3e7be5f54a423123db0f22ea2d9f67dac924116eedfdadf93ee29c79a9945999cd06e30ee7c976653cb7bb7

    • SSDEEP

      49152:ivBt62XlaSFNWPjljiFa2RoUYIR/xNESEmk/iiLoGdUTHHB72eh2NT:ivr62XlaSFNWPjljiFXRoUYIhxRs

    Score
    10/10
    quasaroffice spywaretrojan

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks