TrojanDownloader_O97M_Donoff_192

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_192{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {4a 65 31 31 5a 54 57 65 6e 45 28 4d 75 74 53 5a 50 4b 55 6c 4c 58 29 20 3d 20 4a 65 31 31 5a 54 57 65 6e 45 28 4d 75 74 53 5a 50 4b 55 6c 4c 58 29 20 58 6f 72 20 28 4d 69 55 66 6d 6a 57 73 59 28 28 4d 69 55 66 6d 6a 57 73 59 28 51 6e 55 36 69 6c 4e 29 20 2b 20 4d 69 55 66 6d 6a 57 73 59 28 57 52 59 30 39 53 6e 66 4e 4e 29 29 20 4d 6f 64 20 32 35 36 29 29 } 		$a_01_1 = {51 6e 55 36 69 6c 4e 20 3d 20 28 51 6e 55 36 69 6c 4e 20 2b 20 4d 69 55 66 6d 6a 57 73 59 28 4d 75 74 53 5a 50 4b 55 6c 4c 58 29 20 2b 20 50 71 65 4d 6b 44 4f 70 58 5a 55 31 46 6f 28 4d 75 74 53 5a 50 4b 55 6c 4c 58 20 4d 6f 64 20 4c 65 6e 28 44 48 4d 47 6c 64 4f 6c 67 78 29 29 29 20 4d 6f 64 20 32 35 36 } 		$a_01_2 = {51 6e 55 36 69 6c 4e 20 3d 20 28 51 6e 55 36 69 6c 4e 20 2b 20 31 29 20 4d 6f 64 20 32 35 36 } 		$a_01_3 = {57 52 59 30 39 53 6e 66 4e 4e 20 3d 20 28 57 52 59 30 39 53 6e 66 4e 4e 20 2b 20 4d 69 55 66 6d 6a 57 73 59 28 51 6e 55 36 69 6c 4e 29 29 20 4d 6f 64 20 32 35 36 } 	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 ]]

f7dad18c-bd36-4f98-a7be-9009c3cb3175

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion