TrojanDownloader_Win32_Barbasar

YARA detection rule by roadwy

TrojanDownloader:Win32/Barbasar,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_Win32_Barbasar{
	meta:
		description = "TrojanDownloader:Win32/Barbasar,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {68 74 74 70 73 3a 2f 2f 73 33 2d 61 70 2d 6e 6f 72 74 68 65 61 73 74 2d 31 2e 61 6d 61 7a 6f 6e 61 77 73 2e 63 6f 6d 2f 75 70 64 61 74 65 2d 73 65 63 75 72 65 2f 61 73 6d 73 67 72 62 61 72 62 2e 7a 69 70 } 		$a_01_1 = {53 79 73 74 65 6d 5c 43 75 72 72 65 6e 74 43 6f 6e 74 72 6f 6c 53 65 74 5c 43 6f 6e 74 72 6f 6c 5c 4b 65 79 62 6f 61 72 64 20 4c 61 79 6f 75 74 73 5c 25 2e 38 78 } 		$a_01_2 = {68 74 74 70 3a 2f 2f 77 77 77 2e 6d 6f 6c 69 76 2e 63 6f 6d 2e 62 72 2f 73 74 61 74 2f 65 6d 61 69 6c 30 37 30 32 2f } 		$a_01_3 = {53 6f 66 74 77 61 72 65 5c 42 6f 72 6c 61 6e 64 5c 44 61 74 61 62 61 73 65 20 45 6e 67 69 6e 65 } 		$a_00_4 = {41 00 20 00 74 00 72 00 61 00 6e 00 73 00 61 00 63 00 74 00 69 00 6f 00 6e 00 20 00 69 00 73 00 20 00 61 00 6c 00 72 00 65 00 61 00 64 00 79 00 20 00 61 00 63 00 74 00 69 00 76 00 65 00 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_00_4  & 1)*1) >=5
 
}

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

1c3f6f7c-2a23-4b2e-a999-ec0dbcd70f04

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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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