Trojan_Win32_Chksyn_F

YARA detection rule by roadwy

Trojan:Win32/Chksyn.F,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Trojan_Win32_Chksyn_F{
	meta:
		description = "Trojan:Win32/Chksyn.F,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_03_0 = {69 c9 35 4e 5a 01 83 c1 01 89 0d ?? ?? ?? 00 8b 15 ?? ?? ?? 00 c1 ea 10 0f b7 c2 25 ff ff 00 00 } 		$a_00_1 = {4d 69 63 72 6f 73 6f 66 74 20 57 69 6e 64 6f 77 73 20 45 78 70 6c 6f 72 65 72 22 20 6d 6f 64 65 20 3d 20 45 4e 41 42 4c 45 } 		$a_00_2 = {53 65 72 76 69 63 65 22 20 6d 6f 64 65 20 3d 20 45 4e 41 42 4c 45 } 		$a_03_3 = {6a f1 6a fe ff 15 ?? ?? 40 00 } 		$a_00_4 = {c6 45 ec e9 8b 45 0c 2b 45 08 83 e8 05 89 45 ed } 	condition:
		((#a_03_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_03_3  & 1)*1+(#a_00_4  & 1)*1) >=5
 
}

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

b1c2bd53-7e92-486a-951c-9399eabba7ec

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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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