TrojanDownloader_Win32_Fsizedol_A_bit

YARA detection rule by roadwy

TrojanDownloader:Win32/Fsizedol.A!bit,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_Win32_Fsizedol_A_bit{
	meta:
		description = "TrojanDownloader:Win32/Fsizedol.A!bit,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {53 6f 66 74 77 61 72 65 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 52 75 6e } 		$a_01_1 = {48 6f 73 74 3a 20 68 65 6c 6c 6f 2e 70 68 70 } 		$a_01_2 = {5c 6c 61 73 74 2e 65 78 65 } 		$a_01_3 = {64 61 74 61 3d 65 79 4a 31 64 57 6c 6b 49 6a 6f 69 49 69 77 69 59 6e 56 70 62 47 51 69 4f 6a 59 73 49 6d 39 7a 49 6a 6f 69 56 32 6c 75 56 32 6c 75 5a 47 39 33 63 79 49 73 49 6d 35 68 64 43 49 36 4d 48 30 3d } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

f50fc643-1864-407f-9685-e8480986af42

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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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