Backdoor_Win32_Spesass_A_MTB

YARA detection rule by roadwy

Backdoor:Win32/Spesass.A!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 08 00 00

rule Backdoor_Win32_Spesass_A_MTB{
	meta:
		description = "Backdoor:Win32/Spesass.A!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 08 00 00 "
		
	strings :
		$a_01_0 = {6d 61 69 6e 2e 66 69 6e 64 50 69 64 } 		$a_01_1 = {6d 61 69 6e 2e 73 65 74 53 69 6c 65 6e 74 50 72 6f 63 65 73 73 45 78 69 74 } 		$a_01_2 = {6d 61 69 6e 2e 73 65 74 53 65 44 65 62 75 67 50 72 69 76 69 6c 65 67 65 } 		$a_01_3 = {53 4f 46 54 57 41 52 45 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 20 4e 54 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 53 69 6c 65 6e 74 50 72 6f 63 65 73 73 45 78 69 74 5c 6c 73 61 73 73 2e 65 78 65 } 		$a_01_4 = {52 65 70 6f 72 74 69 6e 67 4d 6f 64 65 } 		$a_01_5 = {44 75 6d 70 54 79 70 65 } 		$a_01_6 = {4c 6f 63 61 6c 44 75 6d 70 46 6f 6c 64 65 72 } 		$a_01_7 = {47 6c 6f 62 61 6c 46 6c 61 67 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1) >=8
 
}

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

b69b342d-535a-432a-8ead-d058f99ffe37

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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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