TrojanDownloader_O97M_Donoff_PF

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_PF{
	meta:
		description = "TrojanDownloader:O97M/Donoff.PF,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {3d 20 56 42 41 2e 45 6e 76 69 72 6f 6e 28 22 41 70 70 44 61 74 61 22 29 20 26 20 22 5c 4d 69 63 72 6f 73 6f 66 74 5c 45 78 63 65 6c 5c } 		$a_00_1 = {3d 20 22 75 70 64 61 74 65 2e 74 78 74 } 		$a_02_2 = {2e 53 61 76 65 54 6f 46 69 6c 65 20 [0-10] 2c 20 32 } 		$a_02_3 = {2e 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 57 53 63 72 69 70 74 2e 53 68 65 6c 6c 22 29 2e 52 75 6e 20 28 22 63 73 63 72 69 70 74 20 2f 2f 45 3a 6a 73 63 72 69 70 74 20 22 20 26 20 [0-10] 29 2c 20 30 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_02_2  & 1)*1+(#a_02_3  & 1)*1) >=4
 
}

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

54efaa9b-1d7e-4360-962c-5a9a77602b0f

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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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