识别具有服务和侦听端口的主机：
MDE
DeviceNetworkEvents| where Timestamp > ago(30d)| where ActionType == "ListeningConnectionCreated"| where LocalPort == "1801"| where InitiatingProcessVersionInfoOriginalFileName has "MQSVC"| summarize by DeviceName
Sentinel
DeviceNetworkEvents| where TimeGenerated > ago(30d)| where ActionType == "ListeningConnectionCreated"| where LocalPort == "1801"| where InitiatingProcessVersionInfoOriginalFileName has "MQSVC"| summarize by DeviceName
Look for possible exploitation of CVE-2023-21554
//possible exploitation of CVE-2023-21554//if successful look for a a follow-up outbound connection to the same external IP or to a possible secondary C2 connection. This would likely result in a child process being spawned from mqsvc.exe that should also be investigated. On the external facing infra this will likely materialise in a webshell or similar.DeviceNetworkEvents| where InitiatingProcessFileName =~ "mqsvc.exe" and LocalPort == 1801 and ActionType == 'InboundConnectionAccepted'
Look for child processes spawned by mqsvc.exe
DeviceProcessEvents| where ( InitiatingProcessFileName has "mqsvc.exe" and isnotempty(FileName) ) or (InitiatingProcessParentFileName has "mqsvc.exe" and isnotempty(InitiatingProcessFileName) )
可以使用Chat GPT进行解析以上内容更快速了解相关利用！
原文始发于微信公众号（Ots安全）：CVE-2023-21554原始查询利用略有不同的字段
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