TrojanDownloader_O97M_Donoff_R_MTB_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.R!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 04 00 00

rule TrojanDownloader_O97M_Donoff_R_MTB_2{
	meta:
		description = "TrojanDownloader:O97M/Donoff.R!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 04 00 00 "
		
	strings :
		$a_03_0 = {61 70 69 2e 69 70 69 66 79 2e 6f 72 67 2f 3f 66 6f 72 6d 61 74 3d 6a 73 6f 6e 90 0a 2f 00 68 74 74 70 73 3a 2f 2f } 		$a_01_1 = {20 3d 20 22 43 3a 5c 55 73 65 72 73 5c 22 20 26 20 41 70 70 6c 69 63 61 74 69 6f 6e 2e 55 73 65 72 4e 61 6d 65 20 26 20 22 5c 41 70 70 44 61 74 61 5c 52 6f 61 6d 69 6e 67 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 5c 53 74 61 72 74 20 4d 65 6e 75 5c 50 72 6f 67 72 61 6d 73 5c 53 74 61 72 74 75 70 5c 73 79 73 74 65 6d 2e 70 73 31 22 } 		$a_01_2 = {2e 45 78 65 63 28 22 63 61 6c 63 22 29 } 		$a_01_3 = {22 42 61 73 65 36 34 44 65 63 6f 64 65 22 2c 20 22 42 61 64 20 63 68 61 72 61 63 74 65 72 20 49 6e 20 42 61 73 65 36 34 20 73 74 72 69 6e 67 2e 22 } 	condition:
		((#a_03_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=5
 
}

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

80f1822f-f3ed-469f-8c43-9a7fc52c66f1

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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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