↳ GitHub sourceAnalytics ruleHigh

Pure Failed Login

Description

Detect failed login attacks and delete user
Rule type
NRT
Version
1.0.0

Declared MITRE coverage

KQL query

Original query, unchanged.

Syslog
| where SyslogMessage has "purity.alert" and SyslogMessage has "invalid username or password"
| extend Message = SyslogMessage
| extend ParsedLog = extract_all(@"((?P<process>.*?)\[(?P<processid>.*?)\][\s\S]*?Array name:\s*'(?P<arrayname>\S+)'[\s\S]*?Controller:\s*'?(?P<controller>[^']+)'?[\s\S]*Interface:\s*'(?P<interface>\S+)'.*?User:\s'(?P<login>.*?)'\sLocation: '(?P<location>[^']+)'\sSublocation: '(?P<sublocation>[^']+)\s*(?P<part2log>[\s\S]*))", dynamic(['process', 'processid', 'arrayname', 'controller', 'interface','login', 'location', 'sublocation', 'part2log']), Message)
| mv-expand ParsedLog
| extend ResidueLog = tostring(ParsedLog[8])
| extend Rlog = extract_all(@"[\s\S]*Action:\s'(?P<action>[^']+)'[\s\S]*Method:\s'(?P<method>[^']+)'[\s\S]*Result:\s(?P<result>[^']+)[\s\S]*Description:\s'(?P<description>[^']*)'", dynamic(['action', 'method', 'result', 'description']), ResidueLog)
| mv-expand Rlog
| extend PureLogType = ParsedLog[0], PureProcessID = ParsedLog[1], PureArrayName = ParsedLog[2], PureController = ParsedLog[3], PureInterface = ParsedLog[4], PureLogin = ParsedLog [5], PureLocation = ParsedLog [6], PureSublocation = ParsedLog [7], PureAction = Rlog [0], PureMethod = Rlog [1], PureResult = Rlog [2], PureDescription = Rlog [3]
| project-away ResidueLog, Rlog, ParsedLog
| summarize count() by tostring(PureLogin), tostring(PureArrayName), HostIP
| where count_ >= 10

Declared entities

IPAccountHost

Related content

Links established from declared identifiers and solution manifests.

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

Source identifier
ed32b115-5001-43a7-a2bb-f53026db4d97
Additional source files 2Solutions/Pure Storage/Analytic Rules/PureFailedLogin.yamlsource ↗Solutions/Pure Storage/Data/Solution_PureStorage.jsonsolution-membership ↗
GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.