BrowserModifier_Win32_Flowsurf_2

YARA detection rule by roadwy

BrowserModifier:Win32/Flowsurf,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule BrowserModifier_Win32_Flowsurf_2{
	meta:
		description = "BrowserModifier:Win32/Flowsurf,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {44 33 39 34 46 36 35 31 2d 33 30 38 39 2d 34 35 34 42 2d 39 30 30 44 2d 38 35 38 46 32 41 41 33 33 34 31 33 } 		$a_01_1 = {37 33 31 31 34 43 30 44 2d 39 43 41 41 2d 34 30 35 31 2d 42 46 36 32 2d 42 41 44 33 46 46 44 39 44 42 35 30 } 		$a_01_2 = {37 44 43 44 36 41 33 34 2d 30 46 41 38 2d 34 45 43 39 2d 42 32 30 44 2d 32 36 33 35 33 37 46 44 35 34 43 39 } 		$a_01_3 = {33 37 36 44 43 35 46 41 2d 35 30 33 46 2d 34 31 41 44 2d 38 45 43 44 2d 45 41 33 31 43 33 45 41 36 33 41 44 } 		$a_03_4 = {83 c4 0c 8d 84 24 ?? 02 00 00 50 8b c8 51 c6 84 24 ?? 02 00 00 62 88 9c 24 ?? 02 00 00 c6 84 24 ?? 02 00 00 63 c6 84 24 ?? 02 00 00 79 c6 84 24 ?? 02 00 00 63 c6 84 24 ?? 02 00 00 70 c6 84 24 ?? 02 00 00 61 c6 84 24 ?? 02 00 00 4a 88 9c 24 ?? 02 00 00 c6 84 24 ?? 02 00 00 73 c6 84 24 ?? 02 00 00 42 c6 84 24 ?? 02 00 00 4c c6 84 24 ?? 02 00 00 73 c6 84 24 ?? 02 00 00 55 ff d6 } 	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 ]]

2da46ad5-8b93-4b2a-b781-4a94f63d9668

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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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