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

    241206-j96l7sykbz

  • MD5

    b54a504853b292f37ae8b6548edd63bc

  • SHA1

    216c649b28b0b91f616eccc17fc623303c505cd0

  • SHA256

    9543e50b475f687645e1b8d772a3218df43f4abc4fffb172575a4ea2d6f0bff8

  • SHA512

    f44d2ae81d59f8aeab75b33f2799bcf74d1b82d99a5b6c8d340d120e5ba05612b1d9d30c7f613a36814e1bd492d18f801d45fe720fd134c659d3a0531fd63569

  • SSDEEP

    49152:CvuG42pda6D+/PjlLOlg6yQipVvCN1JwLoGdmTHHB72eh2NT:CvJ42pda6D+/PjlLOlZyQipVvCs

Score
10/10
quasaroffice04discoveryspywaretrojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

10.11.75.94:4782

U5CD147FKX2:4782

192.168.1.1:4782

10.40.40.50:4782
Mutex

7d41ccf3-c5ae-4aea-802e-7a2d79e742ab

Attributes
  • encryption_key

    D20C6B62C6848A1F494679CD1D5EBA35B7792514

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    ja

  • subdirectory

    SubDir

Targets

    • Target

      Client-built.exe

    • Size

      3.1MB

    • MD5

      b54a504853b292f37ae8b6548edd63bc

    • SHA1

      216c649b28b0b91f616eccc17fc623303c505cd0

    • SHA256

      9543e50b475f687645e1b8d772a3218df43f4abc4fffb172575a4ea2d6f0bff8

    • SHA512

      f44d2ae81d59f8aeab75b33f2799bcf74d1b82d99a5b6c8d340d120e5ba05612b1d9d30c7f613a36814e1bd492d18f801d45fe720fd134c659d3a0531fd63569

    • SSDEEP

      49152:CvuG42pda6D+/PjlLOlg6yQipVvCN1JwLoGdmTHHB72eh2NT:CvJ42pda6D+/PjlLOlZyQipVvCs

    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