Overview

overview

10

Static

static

10

Rebuild.exe

windows10-1703-x64

10

Rebuild.exe

windows10-2004-x64

10

Rebuild.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    Rebuild.exe
  • Size 3.1MB
  • Sample240421-amn9zadh58
  • SHA256 76741ecdd14996115907fb61b4727a102321b829f37f027acb5bf6bd9eaf736b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
quasarslavespywaretrojan

Malware Config

Extracted

Family

  • quasar

Version

  • 1.4.1

Botnet

  • SLAVE

C2

  • uk2.localto.net:44425:44425

  • uk2.localto.net:44425

Mutex

  • cc0a2b76-665e-4e16-b318-5ee02270fbcd

Attributes
  • encryption_key

    D7F09F1F0B9CECC640BA0B3D8975FBE5CED725B5

  • install_name

    UpdateHost.exe

  • log_directory

    Error Logs

  • reconnect_delay

    3000

  • startup_key

    WOS64

  • subdirectory

    Windows

Targets

    • Target
      Rebuild.exe
    • Size 3.1MB
    • SHA256 76741ecdd14996115907fb61b4727a102321b829f37f027acb5bf6bd9eaf736b
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    quasarslavespywaretrojan

    • 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