TrojanDownloader_O97M_Obfuse_CY_eml_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.CY!eml,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Obfuse_CY_eml_2{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.CY!eml,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {53 65 74 20 4c 6f 6b 65 72 64 20 3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 53 69 6b 6f 20 26 20 45 64 69 79 20 26 20 52 69 62 64 65 73 29 } 		$a_01_1 = {52 64 66 63 74 75 20 3d 20 50 68 49 6b 28 50 72 74 63 76 5f 37 2c 20 22 2e 74 78 74 22 2c 20 22 2e 22 20 26 20 54 72 61 62 74 72 20 26 20 42 69 6a 6e 6d 65 20 26 20 54 72 61 62 74 72 20 26 20 22 65 22 29 } 		$a_01_2 = {41 70 70 6c 69 63 61 74 69 6f 6e 2e 53 74 61 72 74 75 70 50 61 74 68 20 26 20 4b 6e 72 66 74 37 20 26 20 22 68 68 5f 39 2e 32 2e 31 5f 22 20 26 20 54 72 61 62 74 72 20 26 20 22 2e 74 78 74 22 } 		$a_01_3 = {3d 20 54 72 61 62 74 72 20 26 20 22 53 22 20 26 20 54 72 61 62 74 72 20 26 20 22 68 22 20 26 20 54 72 61 62 74 72 20 26 20 22 65 6c 22 20 26 20 54 72 61 62 74 72 20 26 20 22 6c 22 } 		$a_01_4 = {3d 20 54 72 61 62 74 72 20 26 20 22 52 22 20 26 20 54 72 61 62 74 72 20 26 20 22 75 22 20 26 20 54 72 61 62 74 72 20 26 20 22 6e 22 } 		$a_01_5 = {3d 20 43 61 6c 6c 42 79 4e 61 6d 65 28 4c 6f 6b 65 72 64 2c 20 50 61 72 6b 53 2c 20 56 62 4d 65 74 68 6f 64 2c 20 43 68 72 28 54 69 62 65 72 64 38 29 20 26 20 52 64 66 63 74 75 20 26 20 43 68 72 28 54 69 62 65 72 64 38 29 20 26 20 22 20 22 20 26 20 6e 75 6d 65 72 6f 2c 20 31 29 } 		$a_01_6 = {20 3d 20 52 65 70 6c 61 63 65 28 64 2c 20 69 2c 20 65 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=7
 
}

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

3c852cbc-fca8-44aa-a5d3-5a80acc1d9c3

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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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