Trojan_Win32_Webprefix

YARA detection rule by roadwy

Trojan:Win32/Webprefix,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 03 00 00

rule Trojan_Win32_Webprefix{
	meta:
		description = "Trojan:Win32/Webprefix,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 03 00 00 "
		
	strings :
		$a_01_0 = {31 68 70 3d 73 74 65 75 64 66 2f 61 72 00 00 00 25 30 38 58 2d 25 30 34 58 2d 25 30 34 58 2d 25 30 32 58 25 30 32 58 2d 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 00 00 00 00 53 6f 66 74 77 61 72 65 5c 4d 69 63 72 6f 73 6f 66 74 5c 49 6e 74 65 72 6e 65 74 20 45 78 70 6c 6f 72 65 72 5c 4d 61 69 6e 00 00 00 57 65 62 50 72 65 66 69 78 00 } 		$a_01_1 = {4f 66 66 6c 69 6e 65 20 46 6f 6c 64 65 72 } 		$a_01_2 = {26 6f 73 3d 25 73 26 77 70 61 } 	condition:
		((#a_01_0  & 1)*4+(#a_01_1  & 1)*2+(#a_01_2  & 1)*2) >=8
 
}

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

9755c953-9caf-4543-9934-8485444cc45b

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion