Trojan_BAT_Downloader_PST_MTB

YARA detection rule by roadwy

Trojan:BAT/Downloader.PST!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 08 00 00

rule Trojan_BAT_Downloader_PST_MTB{
	meta:
		description = "Trojan:BAT/Downloader.PST!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 08 00 00 "
		
	strings :
		$a_81_0 = {68 74 74 70 73 3a 2f 2f 63 64 6e 2e 64 69 73 63 6f 72 64 61 70 70 2e 63 6f 6d 2f 61 74 74 61 63 68 6d 65 6e 74 73 2f 39 31 30 37 38 37 38 30 36 37 34 38 36 33 39 32 34 35 2f 39 31 30 39 30 32 33 34 36 36 38 31 33 31 35 33 33 38 2f 4f 6e 61 6e 61 5f 48 6f 73 70 69 74 61 6c 5f 4d 61 6e 61 67 65 6d 65 6e 74 5f 53 79 73 74 65 6d 2e 64 6c 6c } 		$a_81_1 = {44 6f 77 6e 6c 6f 61 64 44 61 74 61 } 		$a_81_2 = {52 65 76 65 72 73 65 } 		$a_81_3 = {65 78 65 2e 78 65 79 61 70 2f 30 33 35 38 38 39 33 36 35 30 34 37 35 35 35 30 31 39 2f 31 30 37 33 32 39 34 30 33 34 39 32 38 32 34 30 31 39 2f 73 74 6e 65 6d 68 63 61 74 74 61 2f 6d 6f 63 2e 70 70 61 64 72 6f 63 73 69 64 2e 6e 64 63 2f 2f 3a 73 70 74 74 68 } 		$a_81_4 = {47 65 74 4d 65 74 68 6f 64 } 		$a_81_5 = {47 65 74 54 79 70 65 } 		$a_81_6 = {49 6e 76 6f 6b 65 } 		$a_81_7 = {54 6f 43 68 61 72 41 72 72 61 79 } 	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) >=8
 
}

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

3df1c99a-f757-44b4-b062-8ab2ed7fc58c

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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 ]]

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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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