TrojanDownloader_Win32_Upranfef_A

YARA detection rule by roadwy

TrojanDownloader:Win32/Upranfef.A,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00

rule TrojanDownloader_Win32_Upranfef_A{
	meta:
		description = "TrojanDownloader:Win32/Upranfef.A,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_02_0 = {6f 70 65 6e 00 [0-07] 68 74 74 70 3a 2f 2f [0-30] 2f 75 70 64 61 74 2e 65 78 65 00 [0-07] 25 73 5c 25 73 2e 65 78 65 } 		$a_03_1 = {99 59 f7 f9 8d 45 08 50 53 83 c2 61 89 55 08 e8 ?? ?? ?? ?? 59 4f 59 75 } 	condition:
		((#a_02_0  & 1)*1+(#a_03_1  & 1)*1) >=2
 
}

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

cee56e04-3788-4c03-80ec-7dd850063da3

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion