TrojanDownloader_Win32_Agent_FY

YARA detection rule by roadwy

TrojanDownloader:Win32/Agent.FY,SIGNATURE_TYPE_PEHSTR_EXT,21 00 21 00 07 00 00

rule TrojanDownloader_Win32_Agent_FY{
	meta:
		description = "TrojanDownloader:Win32/Agent.FY,SIGNATURE_TYPE_PEHSTR_EXT,21 00 21 00 07 00 00 "
		
	strings :
		$a_00_0 = {73 63 2e 65 78 65 20 73 74 61 72 74 } 		$a_00_1 = {5c 57 49 4e 44 4f 57 53 5c 73 79 73 74 65 6d 33 32 5c 72 65 67 73 76 72 33 32 2e 65 78 65 } 		$a_00_2 = {5c 64 72 69 76 65 72 73 5c } 		$a_00_3 = {41 4d 44 63 6f 72 65 32 } 		$a_00_4 = {35 38 2e 34 39 2e 35 38 2e 32 30 } 		$a_00_5 = {89 90 68 d4 00 00 89 90 6c d4 00 00 88 90 20 28 01 00 89 90 38 28 01 00 89 90 3c 28 01 00 89 90 40 28 01 00 89 90 34 28 01 00 89 90 44 28 01 00 c7 80 48 28 01 00 80 00 00 00 89 90 4c 28 01 00 89 90 50 28 01 00 } 		$a_02_6 = {8d 85 fc f7 ff ff 68 ?? ?? 40 00 50 e8 ?? ?? 00 00 8d 85 fc f7 ff ff 56 50 e8 ?? ?? 00 00 8d 85 fc f7 ff ff 68 ?? ?? 40 00 50 e8 ?? ?? 00 00 8d 85 fc ef ff ff 50 8d 85 fc f7 ff ff 50 e8 ?? ?? 00 00 8d 85 fc f7 ff ff 68 ?? ?? 40 00 50 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*10+(#a_00_5  & 1)*10+(#a_02_6  & 1)*10) >=33
 
}

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

8681b56b-dfe8-4577-961b-e0180a425bc1

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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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