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内幕威胁
不寻常的桌面名称
当用户尝试启动不正常的桌面时，就会发生这种情况。
详细信息
数据源：应用程序和桌面（Workspace 应用程序）
CAS 查询
Event-Type = "Session.Logon" AND Session-Launch-Type = "desktop" AND App-Name ~ "<Desktop Name>"
<!--NeedCopy-->
Sigma 签名
author: Citrix
date: 2023/01/31
description: Unusual desktop names
detection:
condition: selection1 and selection2 and not filter_null and filter_app_name
filter_app_name:
- app_name|contains: '<App Name>'
filter_null:
- app_name: null
selection1:
- occurrence_event_type: Citrix.EventMonitor.AppStart
selection2:
- launch_type: 'desktop'
logsource:
product: citrixanalytics
service: security
title: Unusual desktop names
<!--NeedCopy-->
监视特定进程
当用户启动监视列表中的已发布应用程序时，就会发生这种情况。其目的可能是监视特定已发布应用程序的使用情况。
详细信息
数据源：应用程序和桌面 (Session Recording)
CAS 查询
Event-Type = "Citrix.EventMonitor.AppStart" AND App-Name IN ("<App-Name-1>", "<App-Name-2>")
<!--NeedCopy-->
Sigma 签名
author: Citrix
date: 2023/01/31
description: Monitor specific process
detection:
condition: selection and not filter_null and filter_app_name
filter_app_name:
- app_name: ['<App-Name1>', '<App-Name2>']
filter_null:
- app_name: null
selection:
- occurrence_event_type: Citrix.EventMonitor.AppStart
logsource:
product: citrixanalytics
service: security
title: Monitor specific process
<!--NeedCopy-->
未经授权的虚拟应用程序
当用户访问未经授权的虚拟应用程序时，就会发生这种情况。
详细信息
数据源：应用程序和桌面（Workspace 应用程序）
CAS 查询
Event-Type = "App.Start" AND App-Name IN ("<App-Name1>", "<App-Name2>")
<!--NeedCopy-->
Sigma 签名
date: 2023/01/31
description: Unauthorized virtual apps
detection:
condition: selection and not filter_null and filter_app_name
filter_app_name:
- app_name: ['<App-Name1>', '<App-Name2>']
filter_null:
- app_name: null
selection:
- occurrence_event_type: App.Start
logsource:
product: citrixanalytics
service: security
title: Unauthorized virtual apps
<!--NeedCopy-->
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