Worm_Win32_Cosmu_B

YARA detection rule by roadwy

Worm:Win32/Cosmu.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Worm_Win32_Cosmu_B{
	meta:
		description = "Worm:Win32/Cosmu.B,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {54 41 50 49 78 46 6f 72 6d } 		$a_00_1 = {73 65 74 20 53 45 52 3d 66 74 70 2e 73 61 6b 75 6e 69 61 } 		$a_00_2 = {3e 3e 20 75 70 6c 2e 74 78 74 } 		$a_02_3 = {2e 6a 70 67 2e 65 78 65 00 00 66 3a 2f [0-10] 2e 6a 70 67 2e 65 78 65 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_02_3  & 1)*1) >=4
 
}

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

c98c3bd1-b41e-4d7b-8462-035fdaa25408

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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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