TrojanDropper_Win32_Percol_B

YARA detection rule by roadwy

TrojanDropper:Win32/Percol.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 03 00 05 00 00

rule TrojanDropper_Win32_Percol_B{
	meta:
		description = "TrojanDropper:Win32/Percol.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 03 00 05 00 00 "
		
	strings :
		$a_90_0 = {43 3a 5c 50 72 6f 67 72 61 6d 20 46 69 6c 65 73 5c 5c 41 41 56 5c 5c 43 44 72 69 76 65 72 2e 73 79 73 } 		$a_01_1 = {43 44 72 69 76 65 72 2e 49 6e 66 } 		$a_01_2 = {2a 43 44 72 69 76 65 72 } 		$a_00_3 = {c6 85 a4 fd ff ff 50 c6 85 a5 fd ff ff 72 c6 85 a6 fd ff ff 6f c6 85 a7 fd ff ff 67 c6 85 a8 fd ff ff 72 c6 85 a9 fd ff ff 61 c6 85 aa fd ff ff 6d c6 85 ab fd ff ff 20 c6 85 ac fd ff ff 46 c6 } 		$a_00_4 = {55 8b ec 81 ec b0 02 00 00 c7 85 b0 fd ff ff 00 00 00 00 eb 0f 8b 85 b0 fd ff ff 83 c0 01 89 85 b0 fd ff ff 83 bd b0 fd ff ff 01 7d 02 eb e6 c7 } 	condition:
		((#a_90_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1) >=3
 
}

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

bf11b2df-4888-4bb2-96a0-751b2c0d6308

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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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