SUSP_LNK_Staging_Directory

YARA detection rule by SECUINFRA Falcon Team

Detects typical staging directories being referenced inside lnk files

rule SUSP_LNK_Staging_Directory {
	meta:
		author = "SECUINFRA Falcon Team"
		date = "27.02.2022"
		description = "Detects typical staging directories being referenced inside lnk files"

	strings:
		$header = {4c00 0000 0114 0200 0000}
		$public = "$env:public" wide

	condition:
		filesize < 20KB
		and ($header at 0)
		and $public

}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

f1d3240e-6ae7-4c0c-a145-1aa3ca22746e

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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