TrojanDownloader_O97M_Bartallex_N

YARA detection rule by roadwy

TrojanDownloader:O97M/Bartallex.N,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00

rule TrojanDownloader_O97M_Bartallex_N{
	meta:
		description = "TrojanDownloader:O97M/Bartallex.N,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00 "
		
	strings :
		$a_01_0 = {46 6f 72 20 4b 53 52 44 79 52 6a 4f 72 61 45 64 6b 7a 6d 6b 20 3d 20 39 39 38 35 20 2d 20 26 48 32 36 45 31 20 54 6f 20 5f 0d 0a 31 33 37 38 31 20 2d 20 5f 0d 0a 26 48 33 35 35 37 0d 0a 49 66 20 5f 0d 0a 49 6e 53 74 72 28 20 5f 0d 0a 70 6d 4b 56 6c 73 64 62 44 42 65 42 42 45 74 7a 76 2c 20 43 68 72 28 4b 53 52 44 79 52 6a 4f 72 61 45 64 6b 7a 6d 6b 29 29 20 3d 20 5f 0d 0a 30 20 54 68 65 6e 20 48 71 6a 75 58 46 55 4a 66 7a 78 46 51 67 78 69 4a 66 69 74 70 52 74 49 51 6e 78 50 46 46 48 20 3d 20 48 71 6a 75 58 46 55 4a 66 7a 78 46 51 67 78 69 4a 66 69 74 70 52 74 49 51 6e 78 50 46 46 48 20 26 20 43 68 72 28 20 5f 0d 0a 4b 53 52 44 79 52 6a 4f 72 61 45 64 6b 7a 6d 6b 29 0d 0a 4e 65 78 74 20 5f } 	condition:
		((#a_01_0  & 1)*1) >=1
 
}

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

72d536f2-c8ce-4f7f-ab80-f4dacc23c2d5

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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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