TrojanDownloader_O97M_Donoff_BZ

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.BZ,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00

rule TrojanDownloader_O97M_Donoff_BZ{
	meta:
		description = "TrojanDownloader:O97M/Donoff.BZ,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_02_0 = {69 63 72 6f 90 1a 08 01 73 6f 66 74 2e 58 90 1a 08 01 4d 4c 48 54 54 50 2e 2e 2e 41 64 6f 64 62 2e 90 1b 00 74 72 90 1a 08 01 65 61 90 1b 01 2e 2e 2e 90 1b 00 68 90 1b 03 6c 6c 2e 41 70 70 6c 69 63 61 74 69 6f 6e 2e 2e 2e 57 90 1b 00 63 72 69 70 74 2e 90 1b 00 68 90 1b 03 6c 6c 2e 2e 2e 50 72 6f 63 90 1b 03 90 1b 00 90 1b 00 2e 2e 2e 47 90 1b 03 54 2e 2e 2e 54 90 1b 03 90 1b 01 50 } 		$a_02_1 = {20 3d 20 43 68 72 28 [0-10] 20 2f 20 28 31 30 20 2b 20 36 29 29 0d 0a 45 6e 64 20 46 75 6e 63 74 69 6f 6e 0d 0a 50 75 62 6c 69 63 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 28 41 31 20 41 73 20 53 74 72 69 6e 67 2c 20 41 32 20 41 73 20 53 74 72 69 6e 67 2c 20 41 33 20 41 73 20 53 74 72 69 6e 67 29 20 41 73 20 53 74 72 69 6e 67 0d 0a 90 1b 01 20 3d 20 52 65 70 6c 61 63 65 28 41 31 2c 20 41 32 2c 20 41 33 29 0d 0a 45 6e 64 20 46 75 6e 63 74 69 6f 6e } 	condition:
		((#a_02_0  & 1)*1+(#a_02_1  & 1)*1) >=2
 
}

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

f6d1cb36-b469-42ff-aa45-7b5fa1429f44

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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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