Trojan_Win32_DyCode_A

YARA detection rule by roadwy

Trojan:Win32/DyCode.A,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 05 00 00

rule Trojan_Win32_DyCode_A{
	meta:
		description = "Trojan:Win32/DyCode.A,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 05 00 00 "
		
	strings :
		$a_03_0 = {bd 4b 48 43 42 66 b8 04 00 [0-02] cc } 		$a_03_1 = {50 6a 40 8b 45 ?? 50 8b 45 fc 50 ff 15 ?? ?? ?? ?? 8b 45 fc ff d0 } 		$a_03_2 = {c6 03 c3 e8 ?? ?? ?? ?? 5a 5b c3 } 		$a_03_3 = {8b 16 88 c3 32 da c1 e8 08 33 04 9d ?? ?? ?? ?? 88 c3 32 de c1 e8 08 33 04 9d ?? ?? ?? ?? c1 ea 10 } 		$a_00_4 = {53 48 45 4c 4c 00 00 00 43 4f 44 45 00 } 	condition:
		((#a_03_0  & 1)*2+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_00_4  & 1)*1) >=4
 
}

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

8c15c3b8-c9d8-4726-b951-de29609a6bee

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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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