TrojanDownloader_Win32_Kepier_A_bit

YARA detection rule by roadwy

TrojanDownloader:Win32/Kepier.A!bit,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_Win32_Kepier_A_bit{
	meta:
		description = "TrojanDownloader:Win32/Kepier.A!bit,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {50 72 6f 63 65 73 73 53 61 66 65 2e 65 78 65 } 		$a_03_1 = {68 74 74 70 3a 2f 2f [0-30] 2f 74 6f 6e 67 6a 69 2e 70 68 70 3f 75 69 64 3d } 		$a_01_2 = {53 45 4c 45 43 54 20 4e 61 6d 65 20 46 52 4f 4d 20 57 69 6e 33 32 5f 50 72 6f 63 65 73 73 20 57 68 65 72 65 20 4e 61 6d 65 3d 22 25 73 22 } 		$a_01_3 = {2e 70 62 69 70 6b 69 65 72 72 71 6f 6d 2e 6c 69 66 65 2f 6d 2f 75 61 63 2e 6a 70 67 } 	condition:
		((#a_01_0  & 1)*1+(#a_03_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

9f377eb1-c5a4-4df6-ba2e-1a7e19f36521

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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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