PH_Rule_Degraded_Service_Response_IP
Enabled
Detects that the response time of an end user monitored service is greater than a defined threshold (average over 3 samples in 15 minutes is more than 5 seconds). This service has well known IP address.
7
Availability
Impact
Impact consists of techniques that adversaries use to disrupt availability or compromise integrity by manipulating business and operational processes. Techniques used for impact can include destroying or tampering with data. In some cases, business processes can look fine, but may have been altered to benefit the adversaries’ goals. These techniques might be used by adversaries to follow through on their end goal or to provide cover for a confidentiality breach.
https://attack.mitre.org/tactics/TA0040T1499.003
Endpoint Denial of Service: Application Exhaustion Flood
Adversaries may target resource intensive features of web applications to cause a denial of service (DoS). Specific features in web applications may be highly resource intensive. Repeated requests to those features may be able to exhaust system resources and deny access to the application or the server itself.
https://attack.mitre.org/techniques/T1499/003Application
Any Device via STM Monitoring
Correlation
Identify the root cause and solve the issue
If the following pattern or patterns match an ingested event within the given time window in seconds, trigger an incident.
900 seconds
If the following defined pattern/s occur within a 900 second time window.
ResponseHigh
This is the named definition of the event query, this is important if multiple subpatterns are defined to distinguish them.
This is the query logic that matches incoming events
eventType = "PH_DEV_MON_EUM_SUCCESS" AND hostIpAddr IS NOT NULL
This defines how matching events are aggregated, only events with the same matching attribute values are grouped into one unique incident ID
hostName,hostIpAddr,endUserMonitorName,endUserMonitorStep
This is most typically a numerical constraint that defines when the rule should trigger an incident
COUNT(*) >= 3 AND AVG(appResponseTimeMSec) > 5000
This section defines which fields in matching raw events should be mapped to the incident attributes in the resulting incident.
The available raw event attributes to map are limited to the group by attributes and the aggregate event constraint fields for each subpattern
hostName=ResponseHigh.hostName,
hostIpAddr=ResponseHigh.hostIpAddr,
endUserMonitorName=ResponseHigh.endUserMonitorName,
endUserMonitorStep=ResponseHigh.endUserMonitorStep,
appResponseTimeMSec=ResponseHigh.AVG(appResponseTimeMSec)