General

  • Target

    HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe

  • Size

    144KB

  • Sample

    221228-k9n8lahh36

  • MD5

    7f7fa947c50c3f910aeb0ab971ddbe30

  • SHA1

    fae2adb3424a82d8922e512b823bd85b9e1f9d00

  • SHA256

    17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248

  • SHA512

    9966ea045c835e97c93e34f00708e9d1cc88053dd7eb36a0aafe80596f902a51868c6a43a818a3e79e1db341ce69708c0a61da16c4f0c630abaa46c8c7278388

  • SSDEEP

    3072:TW9VDGgVRschltqD7J/+kD5f2VX7X9sYoo:i9VL0GlMD7ImfOXL9ko

Malware Config

Extracted

Family

quasar

Version

1.4.0.0

Botnet

Office04

C2

primary-comment.at.playit.gg:29022

Mutex

OxNTiA3vaw7DPYLLek

Attributes
  • encryption_key

    jhDT0w3MDDqnddR6Tjen

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Targets

    • Target

      HEUR-Backdoor.MSIL.Quasar.gen-17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248.exe

    • Size

      144KB

    • MD5

      7f7fa947c50c3f910aeb0ab971ddbe30

    • SHA1

      fae2adb3424a82d8922e512b823bd85b9e1f9d00

    • SHA256

      17f5902438ae8e7874be0cf1481d689b7cb4555934c0d48321ea085bee137248

    • SHA512

      9966ea045c835e97c93e34f00708e9d1cc88053dd7eb36a0aafe80596f902a51868c6a43a818a3e79e1db341ce69708c0a61da16c4f0c630abaa46c8c7278388

    • SSDEEP

      3072:TW9VDGgVRschltqD7J/+kD5f2VX7X9sYoo:i9VL0GlMD7ImfOXL9ko

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v6

Tasks