TrojanDownloader_O97M_Donoff_213

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,0b 00 0b 00 0b 00 00

rule TrojanDownloader_O97M_Donoff_213{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,0b 00 0b 00 0b 00 00 "
		
	strings :
		$a_03_0 = {20 3d 20 28 41 73 63 28 [0-10] 29 29 } 		$a_03_1 = {70 20 3d 20 [0-10] 2e [0-10] 2e [0-10] 2e 43 6f 6e 74 72 6f 6c 54 69 70 54 65 78 74 } 		$a_03_2 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 53 75 62 20 [0-10] 20 4c 69 62 20 22 6e 74 64 6c 6c 22 20 41 6c 69 61 73 20 22 52 74 6c 4d 6f 76 65 4d 65 6d 6f 72 79 22 20 28 [0-10] 20 41 73 20 41 6e 79 2c 20 [0-10] 20 41 73 20 41 6e 79 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 29 } 		$a_03_3 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 52 65 6d 6f 76 65 44 69 72 65 63 74 6f 72 79 41 22 20 28 [0-10] 20 41 73 20 4c 6f 6e 67 29 } 		$a_03_4 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 56 69 72 74 75 61 6c 41 6c 6c 6f 63 45 78 22 20 28 42 79 56 61 6c 20 70 72 6f 63 69 64 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 6c 70 61 64 64 72 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 64 77 53 69 7a 65 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 66 6c 41 6c 6c 6f 63 61 74 69 6f 6e 54 79 70 65 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 66 6c 50 72 6f 74 65 63 74 20 41 73 20 4c 6f 6e 67 29 20 41 73 20 4c 6f 6e 67 } 		$a_03_5 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 47 65 74 4d 6f 64 75 6c 65 48 61 6e 64 6c 65 22 20 28 6c 70 4d 6f 64 75 6c 65 4e 61 6d 65 20 41 73 20 4c 6f 6e 67 29 } 		$a_03_6 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 56 69 72 74 75 61 6c 50 72 6f 74 65 63 74 22 20 28 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 29 20 41 73 20 4c 6f 6e 67 } 		$a_03_7 = {50 75 62 6c 69 63 20 20 44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 53 75 62 20 [0-10] 20 4c 69 62 20 22 6e 74 64 6c 6c 22 20 41 6c 69 61 73 20 22 52 74 6c 4d 6f 76 65 4d 65 6d 6f 72 79 22 20 28 [0-10] 20 41 73 20 41 6e 79 2c 20 [0-10] 20 41 73 20 41 6e 79 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 29 } 		$a_03_8 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 52 65 6d 6f 76 65 44 69 72 65 63 74 6f 72 79 41 22 20 28 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 29 } 		$a_03_9 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 47 65 74 4d 6f 64 75 6c 65 48 61 6e 64 6c 65 22 20 28 6c 70 4d 6f 64 75 6c 65 4e 61 6d 65 20 41 73 20 4c 6f 6e 67 50 74 72 29 } 		$a_03_10 = {50 75 62 6c 69 63 20 20 44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 46 75 6e 63 74 69 6f 6e 20 [0-10] 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 22 20 41 6c 69 61 73 20 22 56 69 72 74 75 61 6c 41 6c 6c 6f 63 45 78 22 20 28 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 2c 20 42 79 56 61 6c 20 [0-10] 20 41 73 20 4c 6f 6e 67 50 74 72 29 20 41 73 20 4c 6f 6e 67 50 74 72 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_03_4  & 1)*1+(#a_03_5  & 1)*1+(#a_03_6  & 1)*1+(#a_03_7  & 1)*1+(#a_03_8  & 1)*1+(#a_03_9  & 1)*1+(#a_03_10  & 1)*1) >=11
 
}

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

4521143b-b655-4cf8-be7a-8c8915728652

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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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