TrojanDownloader_Win32_Dryanonis_A

YARA detection rule by roadwy

TrojanDownloader:Win32/Dryanonis.A,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 07 00 00

rule TrojanDownloader_Win32_Dryanonis_A{
	meta:
		description = "TrojanDownloader:Win32/Dryanonis.A,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 07 00 00 "
		
	strings :
		$a_01_0 = {2f 6c 6f 67 73 2f 69 6e 73 74 2e 70 68 70 } 		$a_01_1 = {65 75 67 65 6e 65 5f 64 61 6e 69 6c 6f 76 40 79 61 68 6f 6f 2e 63 6f 6d 7c 7c 7c } 		$a_01_2 = {6b 61 72 6c 68 75 67 68 61 6e 2e 63 6f 6d } 		$a_01_3 = {67 72 65 65 6e 67 72 61 73 73 6f 75 74 64 6f 6f 72 73 65 72 76 69 63 65 73 2e 63 6f 6d } 		$a_01_4 = {74 72 61 64 65 6d 61 72 6b 2d 73 61 66 65 74 79 2e 63 6f 6d } 		$a_01_5 = {7c 7c 7c 32 32 32 32 32 32 32 32 32 32 32 } 		$a_01_6 = {32 37 37 38 32 34 38 37 33 35 32 30 32 39 33 39 33 32 30 33 39 34 30 36 31 36 34 33 39 38 30 31 32 39 30 33 39 34 39 30 35 37 32 36 37 32 38 38 39 34 37 38 30 35 38 35 35 31 30 31 35 33 39 33 37 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=6
 
}

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

05ac04e9-b188-43c2-a2f3-3dcb66c0175f

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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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