TrojanDownloader_O97M_Donoff_AC_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.AC,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_Donoff_AC_2{
	meta:
		description = "TrojanDownloader:O97M/Donoff.AC,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_03_0 = {45 6e 76 69 72 6f 6e 28 4d 6f 64 75 6c 65 33 2e [0-10] 29 20 26 20 53 74 72 52 65 76 65 72 73 65 28 43 68 72 24 28 31 30 31 29 20 26 20 43 68 72 24 28 34 36 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 31 31 32 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 31 31 32 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 34 37 29 29 } 		$a_01_1 = {53 74 72 52 65 76 65 72 73 65 28 43 68 72 24 28 31 30 31 29 20 26 20 43 68 72 24 28 31 32 30 29 29 } 		$a_01_2 = {53 68 65 6c 6c 28 53 74 72 52 65 76 65 72 73 65 28 43 68 72 24 28 31 30 31 29 20 26 20 43 68 72 24 28 34 36 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 31 31 32 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 31 31 32 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 34 37 29 20 26 20 43 68 72 24 28 33 37 29 20 26 20 43 68 72 24 28 38 30 29 20 26 20 43 68 72 24 28 37 37 29 20 26 20 43 68 72 24 28 38 34 29 20 26 20 43 68 72 24 28 33 37 29 20 26 20 43 68 72 24 28 33 32 29 20 26 20 43 68 72 24 28 31 31 36 29 20 26 20 43 68 72 24 28 31 31 34 29 20 26 20 43 68 72 24 28 39 37 29 20 26 20 43 68 72 24 28 31 31 36 29 } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

75cea35b-3dfb-46b4-9ca0-e708ac20d7d3

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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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