Overview

overview

10

Static

static

10

Client-built.exe

windows7-x64

10

Client-built.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Client-built.exe

  • Size

    3.1MB

  • Sample

    250105-t4h9tszjew

  • MD5

    06550a7d85870e79df0d9a55fb3bac98

  • SHA1

    ed011b024814c737519d026bec4138ef8569d779

  • SHA256

    60c5af78dbbde0379ee14544cd4f98cead5f516842fcbb94b3b1e035b82c0ac4

  • SHA512

    51e48bf7e4f3a5b9f7b6806153423f9c484cc1405260a283539efad7c21cd50327b9670fb9f06cd25239d50e3fa7d168ec831a856d8b52d9ace2f63425bfb163

  • SSDEEP

    49152:Tvae821/aQWl8P0lSk3aKA3Z+nMwRJ6ObR3LoGdhUKSTHHB72eh2NT:Tvx821/aQWl8P0lSk3DA3Z+nMwRJ6I

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

192.168.1.145:4782

192.168.56.1:4784

192.168.1.145:4784

192.168.1.254:4784
Mutex

9d952f82-b8b7-4948-b2b7-53c225a63ebb

Attributes
  • encryption_key

    AAB9DCB0841C8C889A6BCA76764D0770416B2FE1

  • 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

      06550a7d85870e79df0d9a55fb3bac98

    • SHA1

      ed011b024814c737519d026bec4138ef8569d779

    • SHA256

      60c5af78dbbde0379ee14544cd4f98cead5f516842fcbb94b3b1e035b82c0ac4

    • SHA512

      51e48bf7e4f3a5b9f7b6806153423f9c484cc1405260a283539efad7c21cd50327b9670fb9f06cd25239d50e3fa7d168ec831a856d8b52d9ace2f63425bfb163

    • SSDEEP

      49152:Tvae821/aQWl8P0lSk3aKA3Z+nMwRJ6ObR3LoGdhUKSTHHB72eh2NT:Tvx821/aQWl8P0lSk3DA3Z+nMwRJ6I

    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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks