TrojanDropper_Win32_Chyup_A

YARA detection rule by roadwy

TrojanDropper:Win32/Chyup.A,SIGNATURE_TYPE_PEHSTR,03 00 03 00 04 00 00

rule TrojanDropper_Win32_Chyup_A{
	meta:
		description = "TrojanDropper:Win32/Chyup.A,SIGNATURE_TYPE_PEHSTR,03 00 03 00 04 00 00 "
		
	strings :
		$a_01_0 = {46 50 43 20 31 2e 30 2e 36 20 5b 32 30 30 32 2f 30 34 2f 32 33 5d 20 66 6f 72 20 69 33 38 36 20 2d 20 57 49 4e 33 32 } 		$a_01_1 = {4b 2d 4d 65 6c 65 6f 6e 5c 00 0c 00 00 00 0c 00 00 00 ff ff ff ff 46 69 6e 65 42 72 6f 77 73 65 72 5c 00 09 } 		$a_01_2 = {53 45 41 47 55 4c 4c 5c 46 54 50 5c 00 0d 00 00 00 0d 00 00 00 ff ff ff ff 41 63 6f 6f 20 42 72 6f 77 73 65 72 5c 00 07 } 		$a_01_3 = {68 6e 65 74 63 66 67 2e 64 6c 6c 00 0c 00 00 00 0c 00 00 00 ff ff ff ff 72 61 73 61 64 68 6c 70 2e 64 6c 6c 00 0c } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=3
 
}

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

7276b3f6-5b3a-4a60-89b8-ba0de2df04cf

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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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