_Unknown_UPX_modifyer_

YARA detection rule by HydraDragonAntivirus · GPL-2.0

Unknown UPX modifyer

import "pe"
rule _Unknown_UPX_modifyer_
{
	meta:
		description = "Unknown UPX modifyer"
	strings:
		$0 = {E8 02 00 00 00 CD 03 5A 81 C2 ?? ?? ?? ?? 81 C2 ?? ?? ?? ?? 89 D1 81 C1 3C 05 00 00 52 81 2A 33 53 45 12 83 C2 04 39 CA 7E F3 89 CA 8B 42 04 8D 18 29 02 BB 78 56 00 00 83 EA 04 3B 14 24 7D EC C3}
	condition:
		$0 at pe.entry_point
}

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

c5b64392-b3d0-4edc-8944-a1a91145049c

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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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