TrojanDownloader_Win32_Nuwar_B

YARA detection rule by roadwy

TrojanDownloader:Win32/Nuwar.B,SIGNATURE_TYPE_PEHSTR_EXT,0b 00 0a 00 08 00 00

rule TrojanDownloader_Win32_Nuwar_B{
	meta:
		description = "TrojanDownloader:Win32/Nuwar.B,SIGNATURE_TYPE_PEHSTR_EXT,0b 00 0a 00 08 00 00 "
		
	strings :
		$a_01_0 = {2f 63 6e 74 72 2e 70 68 70 3f } 		$a_01_1 = {73 76 63 70 2e 63 73 76 } 		$a_00_2 = {36 34 2e 32 33 33 } 		$a_01_3 = {47 65 74 53 79 73 74 65 6d 44 69 72 65 63 74 6f 72 79 41 } 		$a_00_4 = {55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 41 } 		$a_00_5 = {75 72 6c 6d 6f 6e 2e 64 6c 6c } 		$a_00_6 = {67 61 67 61 67 61 72 61 64 69 6f } 		$a_00_7 = {77 69 6e 73 75 62 2e 78 6d 6c 00 57 69 6e 64 6f 77 73 53 75 62 56 65 72 73 69 6f 6e 00 00 55 52 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*2+(#a_00_2  & 1)*2+(#a_01_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_00_6  & 1)*2+(#a_00_7  & 1)*2) >=10
 
}

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

71822e8c-2727-46b9-9bc1-c3bab8d430cc

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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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