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Test rule

yara LOW Yara-Rules
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This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at Yara-Rules →
Retrieved: 2026-06-26T11:00:00Z · Confidence: medium

Hunt Hypothesis

The rule detects potential lateral movement by identifying unusual network traffic patterns that may indicate an adversary moving within the network. SOC teams should proactively hunt for this behavior to identify and mitigate early-stage threats before they escalate in an Azure Sentinel environment.

YARA Rule

rule rtf_yahoo_ken
{
meta:
	author = "@patrickrolsen"
	maltype = "Yahoo Ken"
	filetype = "RTF"
	version = "0.1"
	description = "Test rule"
	date = "2013-12-14"
strings:
	$magic1 = { 7b 5c 72 74 30 31 } // {\rt01
	$magic2 = { 7b 5c 72 74 66 31 } // {\rtf1
	$magic3 = { 7b 5c 72 74 78 61 33 } // {\rtxa3
	$author1 = { 79 61 68 6f 6f 20 6b 65 63 } // "yahoo ken"
condition:
	($magic1 or $magic2 or $magic3 at 0) and $author1
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 4 string patterns in its detection logic.

False Positive Guidance

Original source: https://github.com/Yara-Rules/rules/blob/main/malware/MALW_Miscelanea.yar