↳ GitHub sourceAnalytics ruleHigh
Speculus - Sign-in attempt from high-risk IP indicator
Description
'Matches Microsoft Entra ID sign-in attempts against high-risk Speculus IP indicators (risk score >= 75)
received in the last 14 days. A sign-in from a known C2, botnet, or brute-force source IP may indicate
credential theft or account takeover.'
- Rule type
- Scheduled
- Version
- 1.0.0
- Declared status
- Available
- Query frequency
- 1h
- Query period
- 14d
- Trigger
- gt 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
Data types
KQL query
Original query, unchanged.
let indicators = Speculus_Indicators_CL
| where TimeGenerated > ago(14d)
| where isnotempty(IndicatorValue)
| where RiskScore >= 75
| summarize arg_max(Modified, *) by IndicatorValue
| project
IndicatorValue,
RiskScore,
SpeculusActivity = Activity,
Attribution,
Labels,
IndicatorDescription = Description;
SigninLogs
| where TimeGenerated > ago(1h)
| where isnotempty(IPAddress)
| join kind=inner indicators on $left.IPAddress == $right.IndicatorValue
| project
TimeGenerated,
IPAddress,
UserPrincipalName,
UserDisplayName,
AppDisplayName,
ResultType,
ResultDescription,
RiskScore,
SpeculusActivity,
Attribution,
Labels,
IndicatorDescription
Declared entities
Related content
Links established from declared identifiers and solution manifests.
Source provenance
GitHubDisplayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.
- Commit
9800e51↗- Source identifier
e1b8d4a6-9c27-45f3-8a1e-7f2c0d9b5e64
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC