TrojanDownloader_O97M_Donoff_137

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Donoff_137{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {4c 61 75 6e 63 68 65 72 5f 53 79 73 74 65 6d 20 3d 20 22 55 73 65 72 2d 41 67 65 6e 74 22 } 		$a_01_1 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 53 63 72 69 70 74 69 6e 67 2e 46 69 6c 65 53 79 73 74 65 6d 4f 62 6a 65 63 74 22 29 } 		$a_01_2 = {3d 20 47 65 74 4f 62 6a 65 63 74 28 22 77 69 6e 6d 67 6d 74 73 3a 5c 5c 22 20 26 20 73 74 72 43 6f 6d 70 75 74 65 72 20 26 20 22 5c 72 6f 6f 74 5c 43 49 4d 56 32 22 29 } 		$a_01_3 = {3d 20 4c 61 75 6e 63 68 65 72 5f 50 72 6f 6a 65 63 74 20 2b 20 22 5c 6b 6b 6c 6f 65 70 70 22 20 2b } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

a2ec5f0f-7bbf-4155-a2c6-8a022a4a6870

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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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