TrojanDownloader_O97M_Obfuse_PE_MSR

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.PE!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00

rule TrojanDownloader_O97M_Obfuse_PE_MSR{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.PE!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00 "
		
	strings :
		$a_02_0 = {55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 41 [0-20] 68 74 74 70 [0-02] 3a 2f 2f [0-50] 2f 74 72 75 73 74 79 2f [0-30] 2e 70 6e 67 [0-10] 63 3a 5c 55 73 65 72 73 5c 50 75 62 6c 69 63 5c [0-10] 2e 65 78 65 } 	condition:
		((#a_02_0  & 1)*1) >=1
 
}

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

cf931415-4e2a-4e67-a266-24ef04a41efb

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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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