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Detects Mirai Satori MALW

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: 2026-06-24T11:00:00Z · Confidence: medium

Hunt Hypothesis

The hypothesis is that the detection rule identifies potential Mirai Satori malware activity by monitoring for suspicious network behavior indicative of botnet communication. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage compromise attempts by IoT-based botnets.

YARA Rule

rule Mirai_Satori {
	meta:
		description = "Detects Mirai Satori MALW"
		date = "2018-01-09"

	strings:
		$hexsts01 = { 63 71 75 ?? 62 6B 77 62 75 }
		$hexsts02 = { 53 54 68 72 75 64 62 }
		$hexsts03 = { 28 63 62 71 28 70 66 73 64 6F 63 68 60 } 

	condition:
		all of them
		and is__elf
		and is__Mirai_gen7
		and is__Mirai_Satori_gen
		and filesize < 100KB 
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 3 string patterns in its detection logic.

False Positive Guidance

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