Worm_Win32_Yimfoca_gen_A

YARA detection rule by roadwy

Worm:Win32/Yimfoca.gen!A,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Worm_Win32_Yimfoca_gen_A{
	meta:
		description = "Worm:Win32/Yimfoca.gen!A,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {61 69 6d 3a 67 6f 69 6d 3f 73 63 72 65 65 6e 6e 61 6d 65 3d 25 73 26 6d 65 73 73 61 67 65 3d 25 73 } 		$a_01_1 = {65 78 70 6c 6f 72 65 72 2e 65 78 65 20 68 74 74 70 3a 2f 2f 62 72 6f 77 73 65 75 73 65 72 73 2e 6d 79 73 70 61 63 65 2e 63 6f 6d 2f 42 72 6f 77 73 65 2f 42 72 6f 77 73 65 2e 61 73 70 78 } 		$a_01_2 = {2f 61 6a 61 78 2f 63 68 61 74 2f 73 65 6e 64 2e 70 68 70 3f 5f 5f 61 3d 31 } 		$a_01_3 = {25 73 5c 77 69 6e 74 79 62 72 64 } 		$a_03_4 = {83 7d f4 07 73 1b 8b 45 fc 03 45 f8 8b 4d f4 8a 00 32 81 ?? ?? ?? ?? 8b 4d fc 03 4d f8 88 01 eb d8 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*3) >=5
 
}

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

796f4487-dc2f-4c17-90d4-16e4d9bddc59

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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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