TrojanDownloader_O97M_Donoff_OBSM_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.OBSM!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 06 00 00

rule TrojanDownloader_O97M_Donoff_OBSM_MTB{
	meta:
		description = "TrojanDownloader:O97M/Donoff.OBSM!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 06 00 00 "
		
	strings :
		$a_01_0 = {25 61 70 70 64 61 74 61 25 22 29 26 22 5c 6d 69 63 72 6f 73 6f 66 74 5c 77 69 6e 64 6f 77 73 5c 73 74 61 72 74 6d 65 6e 75 5c 70 72 6f 67 72 61 6d 73 5c 73 74 61 72 74 75 70 5c 75 70 64 61 74 65 73 79 6e 63 69 6e 67 2e 62 61 74 22 2c 32 2c 74 72 75 65 29 } 		$a_01_1 = {63 6d 64 3d 22 63 6d 64 2f 63 73 74 61 72 74 2f 62 2f 6d 69 6e 22 26 22 63 3a 5c 77 69 6e 64 22 26 22 6f 77 73 5c 6d 69 63 72 22 26 22 6f 73 6f 66 74 2e 6e 65 74 5c 66 72 61 6d 65 77 22 26 22 6f 72 6b 36 34 5c 76 34 2e 30 2e 33 22 26 22 30 33 31 39 5c 6d 73 62 75 22 26 22 69 6c 64 2e 65 78 65 22 26 22 2f 6e 6f 6c 22 26 22 6f 67 6f 2f 6e 6f 63 6f 6e 73 22 26 22 6f 6c 65 6c 6f 67 67 65 72 22 26 73 74 72 72 65 73 75 6c 74 } 		$a_01_2 = {73 62 6d 62 3d 22 34 63 38 62 64 63 34 39 38 39 35 62 30 38 22 } 		$a_01_3 = {73 73 6d 62 3d 22 34 38 38 33 65 63 33 38 34 35 33 33 64 62 22 } 		$a_01_4 = {73 62 6d 62 3d 22 38 62 34 35 30 63 38 35 63 30 37 34 35 61 38 35 64 62 22 } 		$a_01_5 = {73 73 6d 62 3d 22 38 62 35 35 30 63 38 35 64 32 37 34 33 34 38 33 37 64 22 } 	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) >=4
 
}

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

bdcf547d-576e-4e50-b1fb-e13e6ffcfe46

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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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