Trojan_Win32_Chepdu_D

YARA detection rule by roadwy

Trojan:Win32/Chepdu.D,SIGNATURE_TYPE_PEHSTR_EXT,19 00 19 00 07 00 00

rule Trojan_Win32_Chepdu_D{
	meta:
		description = "Trojan:Win32/Chepdu.D,SIGNATURE_TYPE_PEHSTR_EXT,19 00 19 00 07 00 00 "
		
	strings :
		$a_01_0 = {44 50 45 2e 44 4c 4c 00 44 6c 6c 43 61 6e 55 6e 6c 6f 61 64 4e 6f 77 } 		$a_01_1 = {00 58 4d 4c 32 } 		$a_01_2 = {25 73 75 73 65 72 69 6e 69 74 7c 25 73 7c 25 73 } 		$a_01_3 = {72 65 67 73 76 72 33 32 2e 65 78 65 00 00 00 00 69 65 78 70 6c 6f 72 65 2e 65 78 65 } 		$a_01_4 = {43 6f 49 6e 74 65 72 6e 65 74 43 6f 6d 70 61 72 65 55 72 6c } 		$a_01_5 = {55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 41 27 } 		$a_01_6 = {71 3d 00 73 65 61 72 63 68 3f } 	condition:
		((#a_01_0  & 1)*10+(#a_01_1  & 1)*10+(#a_01_2  & 1)*2+(#a_01_3  & 1)*2+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=25
 
}

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

44341545-a369-4672-9d08-74ddad9857b9

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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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