Trojan_WinNT_Systex_B

YARA detection rule by roadwy

Trojan:WinNT/Systex.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 06 00 00

rule Trojan_WinNT_Systex_B{
	meta:
		description = "Trojan:WinNT/Systex.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 06 00 00 "
		
	strings :
		$a_01_0 = {83 f8 04 0f 82 84 00 00 00 81 3e 48 54 54 50 0f 85 78 00 00 00 } 		$a_01_1 = {5c 5c 2e 5c 50 65 72 73 69 73 74 00 65 78 70 6c 6f 72 65 72 2e 65 78 65 00 } 		$a_01_2 = {53 41 46 45 43 45 4e 54 45 52 2e 45 58 45 00 } 		$a_01_3 = {2f 74 2e 61 73 70 3f 6f 73 3d 00 } 		$a_01_4 = {73 74 61 72 74 70 61 67 65 6e 75 6d 00 } 		$a_01_5 = {61 6e 74 69 5f 66 69 6c 65 00 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1) >=4
 
}

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

ee852db3-d35b-4316-b398-ac8aa6d391f0

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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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