TrojanDownloader_O97M_Obfuse_HI

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.HI,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00

rule TrojanDownloader_O97M_Obfuse_HI{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.HI,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00 "
		
	strings :
		$a_01_0 = {66 55 32 20 3d 20 22 68 74 74 70 3a 2f 2f 35 34 2e 33 39 2e 32 33 33 2e 31 33 34 22 } 		$a_01_1 = {66 55 32 20 3d 20 22 68 74 74 70 3a 2f 2f 35 34 2e 33 39 2e 32 33 33 2e 31 33 32 2f 64 65 31 2e 74 72 70 22 } 		$a_01_2 = {43 61 6c 6c 20 53 68 65 6c 6c 28 66 50 31 } 		$a_03_3 = {55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 28 30 2c 20 66 55 31 2c 20 66 50 31 [0-05] 2c 20 30 2c 20 30 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_03_3  & 1)*1) >=3
 
}

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

e7ae0c4b-a915-45fb-8ee0-470de6e89d5a

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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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