TrojanDownloader_O97M_Donoff_KAH_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.KAH!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Donoff_KAH_MTB{
	meta:
		description = "TrojanDownloader:O97M/Donoff.KAH!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {3a 2f 2f 77 77 77 2e 72 68 62 2d 69 6e 74 65 72 6e 61 74 69 6f 6e 61 6c 2e 63 6f 6d 2f 70 72 6f 6a 65 63 74 73 2f 65 6e 71 75 69 72 79 2e 7a 69 70 22 } 		$a_01_1 = {3d 20 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 53 70 65 63 69 61 6c 46 6f 6c 64 65 72 73 28 22 4d 79 44 6f 63 75 6d 65 6e 74 73 22 29 20 26 20 22 5c 65 6e 71 75 69 72 79 2e 7a 69 70 22 } 		$a_01_2 = {3d 20 70 61 74 68 6e 61 6d 65 20 26 20 22 5c 22 20 26 20 22 65 6e 71 75 69 72 79 2e 7a 69 70 22 } 		$a_01_3 = {27 53 68 65 6c 6c 20 22 52 75 6e 44 4c 4c 33 32 2e 65 78 65 20 43 3a 5c 57 69 6e 64 6f 77 73 5c 53 79 73 74 65 6d 33 32 5c 53 68 69 6d 67 76 77 2e 64 6c 6c 2c 49 6d 61 67 65 56 69 65 77 5f 46 75 6c 6c 73 63 72 65 65 6e 20 22 20 26 20 70 61 74 68 6e 61 6d 65 } 	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 ]]

b3ae021c-81b1-4bcf-9199-3db2113d41c2

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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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