TrojanDownloader_Win32_Hoptto_B

YARA detection rule by roadwy

TrojanDownloader:Win32/Hoptto.B,SIGNATURE_TYPE_PEHSTR_EXT,fffffffe 01 ffffffa4 01 07 00 00

rule TrojanDownloader_Win32_Hoptto_B{
	meta:
		description = "TrojanDownloader:Win32/Hoptto.B,SIGNATURE_TYPE_PEHSTR_EXT,fffffffe 01 ffffffa4 01 07 00 00 "
		
	strings :
		$a_01_0 = {31 34 32 2e 30 2e 33 36 2e 33 34 2f } 		$a_01_1 = {6d 69 6e 65 72 2e 64 6c 6c } 		$a_01_2 = {75 73 66 74 5f 65 78 74 2e 74 78 74 } 		$a_01_3 = {85 ff 7e 4e bb 01 00 00 00 8b 45 fc 8a 44 18 ff 24 0f 8b 55 f8 8a 54 32 ff 80 e2 0f 32 c2 88 45 f3 8d 45 fc e8 } 		$a_01_4 = {2f 6d 61 69 6e 2e 74 78 74 } 		$a_01_5 = {70 68 61 74 6b 2e 74 78 74 } 		$a_01_6 = {2f 33 37 2e 32 32 31 2e 31 36 30 2e 35 36 2f } 	condition:
		((#a_01_0  & 1)*200+(#a_01_1  & 1)*100+(#a_01_2  & 1)*100+(#a_01_3  & 1)*200+(#a_01_4  & 1)*10+(#a_01_5  & 1)*10+(#a_01_6  & 1)*100) >=420
 
}

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

baa94049-fbe9-498f-b9c2-630888e834c0

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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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