TrojanDownloader_Win32_Delf_LM

YARA detection rule by roadwy

TrojanDownloader:Win32/Delf.LM,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_Win32_Delf_LM{
	meta:
		description = "TrojanDownloader:Win32/Delf.LM,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {2e 78 7a 31 39 2e 63 6f 6d } 		$a_03_1 = {25 64 00 00 64 6b 65 ?? ?? ?? ?? ?? ?? ?? ?? ?? 78 7a 7a 2f } 		$a_03_2 = {63 74 66 6d 6f 6e 5f [0-31] 71 72 6e 5f ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 6b 75 6f 64 6f 75 73 65 74 75 70 33 38 5f } 		$a_03_3 = {43 6e 49 45 2e 74 6d 70 ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 6e 2e 74 6d 70 ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? 6e 2e 65 78 65 ?? ?? ?? 64 6f 77 6e 32 ?? ?? ?? 6d 79 69 65 } 	condition:
		((#a_01_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1) >=4
 
}

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

0f3de2e0-ad56-417a-a8df-e7bab82b2319

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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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