TrojanDownloader_Win32_Fosniw_G

YARA detection rule by roadwy

TrojanDownloader:Win32/Fosniw.G,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_Win32_Fosniw_G{
	meta:
		description = "TrojanDownloader:Win32/Fosniw.G,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {70 2e 6b 65 79 77 6f 72 64 6b 72 2e 63 6f 6d 2f } 		$a_01_1 = {2f 72 65 63 65 69 76 65 2f 72 5f 61 75 74 6f 69 64 63 6e 74 2e 61 73 70 3f 6d 65 72 5f 73 65 71 3d 25 73 26 72 65 61 6c 69 64 3d 25 73 26 63 6e 74 5f 74 79 70 65 3d 65 38 26 6d 61 63 3d 25 73 } 		$a_01_2 = {3f 70 72 6a 3d 25 73 26 70 69 64 3d 25 73 26 71 79 3d 25 73 26 6d 61 63 3d 25 73 26 77 3d 25 64 26 68 3d 25 64 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

5b43deca-20c0-4af7-86dd-586bd8e618a8

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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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