Backdoor_Win32_Mosucker_Y

YARA detection rule by roadwy

Backdoor:Win32/Mosucker.Y,SIGNATURE_TYPE_PEHSTR,1d 00 1d 00 0d 00 00

rule Backdoor_Win32_Mosucker_Y{
	meta:
		description = "Backdoor:Win32/Mosucker.Y,SIGNATURE_TYPE_PEHSTR,1d 00 1d 00 0d 00 00 "
		
	strings :
		$a_01_0 = {4d 4d 50 30 37 2e 43 6f 6d 6d 61 6e 64 4c 69 6e 65 31 } 		$a_01_1 = {69 6e 74 65 72 6e 65 74 20 65 78 70 6c 6f 72 65 72 00 45 78 70 6c 6f 72 65 72 00 00 4d 4d 50 30 37 00 } 		$a_01_2 = {5c 00 47 00 75 00 69 00 64 00 6f 00 5c 00 44 00 65 00 73 00 6b 00 74 00 6f 00 70 00 5c 00 } 		$a_01_3 = {44 72 69 76 65 31 } 		$a_01_4 = {52 65 73 74 61 72 74 } 		$a_01_5 = {74 6d 72 4f 6e 6c 69 6e 65 } 		$a_01_6 = {74 6d 72 55 70 64 61 74 65 72 } 		$a_01_7 = {74 6d 72 43 47 49 } 		$a_01_8 = {74 6d 72 49 43 51 } 		$a_01_9 = {6c 62 6c 49 43 51 } 		$a_01_10 = {74 6d 72 43 6f 6e 6e 65 63 74 } 		$a_01_11 = {74 6d 72 50 61 73 73 77 6f 72 64 } 		$a_01_12 = {6c 73 74 44 61 74 61 54 72 61 6e 73 } 	condition:
		((#a_01_0  & 1)*10+(#a_01_1  & 1)*10+(#a_01_2  & 1)*4+(#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+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*1+(#a_01_11  & 1)*1+(#a_01_12  & 1)*1) >=29
 
}

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

d769e6e9-59ee-4573-afdf-e48c9c34e4c6

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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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