Overview

overview

10

Static

static

10

Client-built.exe

windows10-ltsc 2021-x64

10

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    241104-wyds9stpf1

  • MD5

    52b81162360c34724757c2075a60e5af

  • SHA1

    3fceb5947678c56b962a63853d20749f274b6db0

  • SHA256

    a3ef678bd307c07f299a4b4c96d414ddba54e3f00e7e81a5ed5bc949cd65e682

  • SHA512

    ea3e4b4218f5cca06102c97d85306fbd7f1697efd1546ecb3a9cf5f66a68c6354b176545c059aa78757bd7a2f9abbed2c16a16a2d1fbcee1506c9b21400c1f47

  • SSDEEP

    49152:uv2I22SsaNYfdPBldt698dBcjHUiO10mzfioGdKiTHHB72eh2NT:uvb22SsaNYfdPBldt6+dBcjHbO1g

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes
  • encryption_key

    744EA1A385FEBC6DA96387411B7000D77E66B075

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    java updater

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      52b81162360c34724757c2075a60e5af

    • SHA1

      3fceb5947678c56b962a63853d20749f274b6db0

    • SHA256

      a3ef678bd307c07f299a4b4c96d414ddba54e3f00e7e81a5ed5bc949cd65e682

    • SHA512

      ea3e4b4218f5cca06102c97d85306fbd7f1697efd1546ecb3a9cf5f66a68c6354b176545c059aa78757bd7a2f9abbed2c16a16a2d1fbcee1506c9b21400c1f47

    • SSDEEP

      49152:uv2I22SsaNYfdPBldt698dBcjHUiO10mzfioGdKiTHHB72eh2NT:uvb22SsaNYfdPBldt6+dBcjHbO1g

    Score
    10/10
    quasaroffice04discoveryspywaretrojan

    • 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

    behavioral1

MITRE ATT&CK Enterprise v15

Tasks