Trojan_BAT_SmallDownloader_EXPL_MTB

YARA detection rule by roadwy

Trojan:BAT/SmallDownloader.EXPL!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0d 00 0d 00 0d 00 00

rule Trojan_BAT_SmallDownloader_EXPL_MTB{
	meta:
		description = "Trojan:BAT/SmallDownloader.EXPL!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0d 00 0d 00 0d 00 00 "
		
	strings :
		$a_81_0 = {53 65 74 2d 4d 70 50 72 65 66 65 72 65 6e 63 65 20 2d 45 78 63 6c 75 73 69 6f 6e 45 78 74 65 6e 73 69 6f 6e 20 65 78 65 } 		$a_81_1 = {53 74 61 72 74 2d 53 6c 65 65 70 } 		$a_81_2 = {63 75 72 6c 2e 65 78 65 } 		$a_81_3 = {45 78 70 6c 6f 69 74 } 		$a_81_4 = {57 65 62 53 65 72 76 69 63 65 73 } 		$a_81_5 = {67 65 74 5f 45 78 65 63 75 74 61 62 6c 65 50 61 74 68 } 		$a_81_6 = {73 65 74 5f 55 73 65 53 68 65 6c 6c 45 78 65 63 75 74 65 } 		$a_81_7 = {43 6f 6e 63 61 74 } 		$a_81_8 = {70 6f 77 65 72 73 68 65 6c 6c } 		$a_81_9 = {2f 6b 20 53 54 41 52 54 } 		$a_81_10 = {20 26 20 45 58 49 54 } 		$a_81_11 = {73 65 74 5f 41 72 67 75 6d 65 6e 74 73 } 		$a_81_12 = {53 6f 61 70 48 74 74 70 43 6c 69 65 6e 74 50 72 6f 74 6f 63 6f 6c } 	condition:
		((#a_81_0  & 1)*1+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1+(#a_81_4  & 1)*1+(#a_81_5  & 1)*1+(#a_81_6  & 1)*1+(#a_81_7  & 1)*1+(#a_81_8  & 1)*1+(#a_81_9  & 1)*1+(#a_81_10  & 1)*1+(#a_81_11  & 1)*1+(#a_81_12  & 1)*1) >=13
 
}

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

e7d1b99c-1d4e-4c86-a9aa-a7fff2eee23e

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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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