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CYFIRMA - High severity File Hash Indicators with Block Action Rule
Description
"This query retrieves file hash indicators marked for blocking, with no assigned role, from the CyfirmaIndicators_CL table.
It extracts MD5, SHA1, and SHA256 hashes and includes threat metadata for use in preventive security controls such as EDRs, threat intel platforms, or automated blocklists."
- Rule type
- Scheduled
- Version
- 1.0.1
- Query frequency
- 5m
- Query period
- 5m
- Trigger
- GreaterThan 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
Data types
KQL query
Original query, unchanged.
// File Hash Indicators with Block Action
let timeFrame = 5m;
CyfirmaIndicators_CL
| where ConfidenceScore >= 80
and TimeGenerated between (ago(timeFrame) .. now())
and pattern contains 'file:hashes' and RecommendedActions has 'Block' and (isempty(Roles) or not(Roles has_any ('Malware', 'Trojan')))
| extend MD5 = extract(@"file:hashes\.md5\s*=\s*'([a-fA-F0-9]{32})'", 1, pattern)
| extend SHA1 = extract(@"file:hashes\.'SHA-1'\s*=\s*'([a-fA-F0-9]{40})'", 1, pattern)
| extend SHA256 = extract(@"file:hashes\.'SHA-256'\s*=\s*'([a-fA-F0-9]{64})'", 1, pattern)
| extend
Algo_MD5='MD5',
Algo_SHA1= 'SHA1',
Algo_SHA256='SHA256',
ProviderName = 'CYFIRMA',
ProductName = 'DeCYFIR/DeTCT'
| project
MD5,
SHA1,
SHA256,
Algo_MD5,
Algo_SHA1,
Algo_SHA256,
ThreatActors,
Sources,
RecommendedActions,
Roles,
Country,
name,
Description,
ConfidenceScore,
SecurityVendors,
IndicatorID,
created,
modified,
valid_from,
Tags,
ThreatType,
TimeGenerated,
ProductName,
ProviderName
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.
- File
- Solutions/Cyfirma Cyber Intelligence/Analytic Rules/FileHashIndicatorsBlockHighSeverityRule.yaml ↗
- Commit
9800e51↗- Source identifier
7cb829b2-915a-42c2-adb9-725e9ce9bf43
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC