TrojanDownloader_Win32_Renos_IO

YARA detection rule by roadwy

TrojanDownloader:Win32/Renos.IO,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 13 00 00

rule TrojanDownloader_Win32_Renos_IO{
	meta:
		description = "TrojanDownloader:Win32/Renos.IO,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 13 00 00 "
		
	strings :
		$a_00_0 = {2f 00 00 00 68 74 74 70 3a 2f 2f 00 } 		$a_03_1 = {6a 40 59 33 c0 8d bd ?? ?? ff ff f3 ab 66 ab aa } 		$a_01_2 = {59 0f b6 c0 83 c0 03 59 24 fc e8 } 		$a_01_3 = {64 a1 30 00 00 00 8a 40 02 0f b6 c0 89 85 } 		$a_03_4 = {88 04 3e 46 eb 90 09 03 00 83 f0 } 		$a_03_5 = {0f b6 c0 83 c0 03 24 fc e8 90 09 04 00 8a 06 (04|2c) } 		$a_03_6 = {8a 04 3e 34 ?? 88 07 47 4b 75 } 		$a_03_7 = {68 e0 01 00 00 68 58 02 00 00 [0-10] 6a 0a } 		$a_03_8 = {74 05 83 f8 02 75 ?? 6a 0f 68 03 04 00 00 } 		$a_03_9 = {6a 04 50 56 ff 15 ?? ?? ?? ?? 85 c0 74 ?? 83 7d ?? 04 75 } 		$a_03_10 = {8a 0e 80 f1 ?? 88 0c 37 74 06 46 80 3e 00 75 f0 } 		$a_03_11 = {6a 04 50 e8 ?? ?? ?? ?? 59 59 8b 7d ?? 83 65 ?? 00 83 ff 04 0f 86 } 		$a_01_12 = {3b de 74 12 83 fb 68 74 0d 83 fb 65 74 08 81 fb fc 00 00 00 75 04 } 		$a_03_13 = {83 c7 04 83 7d f0 0a [0-04] 0f 82 } 		$a_03_14 = {81 ff 00 00 00 d0 a2 ?? ?? ?? ?? 77 08 81 ff 00 00 00 80 73 ?? ff 15 } 		$a_03_15 = {ff 45 f4 8b 73 04 83 c3 04 89 07 83 c7 04 ff 45 fc 85 f6 75 ?? 83 45 f8 04 ff 45 fc 81 7d f8 } 		$a_03_16 = {2b ca 83 f9 33 0f 84 ?? ?? ?? ?? 83 f9 42 0f 84 ?? ?? ?? ?? 83 f9 4d 0f 85 } 		$a_00_17 = {45 32 34 32 31 31 42 33 2d 41 37 38 41 2d 43 36 41 39 2d 44 33 31 37 2d 37 30 39 37 39 41 43 45 35 30 35 38 } 		$a_03_18 = {83 f1 59 83 f9 62 0f 84 ?? ?? ?? ?? 83 f9 75 0f 84 ?? ?? ?? ?? 83 f9 78 0f 85 } 	condition:
		((#a_00_0  & 1)*1+(#a_03_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1+(#a_03_5  & 1)*1+(#a_03_6  & 1)*1+(#a_03_7  & 1)*1+(#a_03_8  & 1)*1+(#a_03_9  & 1)*1+(#a_03_10  & 1)*1+(#a_03_11  & 1)*1+(#a_01_12  & 1)*1+(#a_03_13  & 1)*1+(#a_03_14  & 1)*1+(#a_03_15  & 1)*1+(#a_03_16  & 1)*1+(#a_00_17  & 1)*1+(#a_03_18  & 1)*1) >=3
 
}

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

f017b1f4-ebca-4447-a11c-812b5a1bfbec

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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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