TrojanDownloader_Win32_Upatre

YARA detection rule by roadwy

TrojanDownloader:Win32/Upatre,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 04 00 00

rule TrojanDownloader_Win32_Upatre{
	meta:
		description = "TrojanDownloader:Win32/Upatre,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 04 00 00 "
		
	strings :
		$a_01_0 = {6a 05 48 ab 5a bb 08 59 7a 14 4a ad 2b c3 89 07 03 fa 49 75 f6 } 		$a_03_1 = {40 00 41 5f 41 89 07 51 47 47 58 47 47 6a 05 48 ab 5a bb ?? ?? ?? ?? 4a 90 09 04 00 54 b8 } 		$a_03_2 = {bb 10 a4 38 22 58 48 ab 8b c6 8b 00 83 c6 04 8b d3 2b c2 ab 49 75 f1 e8 ?? ?? ?? ?? bf ?? ?? ?? ?? 5e 68 10 65 00 00 } 		$a_01_3 = {bb 54 c1 13 1f 54 41 5f ab 41 51 58 48 ab 51 6a 04 8b c6 8b c8 8b 00 59 03 f1 59 2b c3 ab e2 ee } 	condition:
		((#a_01_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_01_3  & 1)*1) >=1
 
}

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

76011b0e-079b-4db2-9985-f8410de6bfa9

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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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