TrojanDownloader_Linux_Bartallex_B_4

YARA detection rule by roadwy

TrojanDownloader:Linux/Bartallex.B,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 0a 00 00

rule TrojanDownloader_Linux_Bartallex_B_4{
	meta:
		description = "TrojanDownloader:Linux/Bartallex.B,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 0a 00 00 "
		
	strings :
		$a_00_0 = {76 65 70 69 63 2e 73 75 2f } 		$a_00_1 = {73 61 76 65 70 69 63 2e 73 75 2f } 		$a_01_2 = {6f 62 6a 41 44 4f 53 74 72 65 61 6d 2e 4f 70 65 6e } 		$a_00_3 = {6d 70 5c 22 20 2b 20 42 41 52 54 } 		$a_01_4 = {4b 69 6c 6c 20 58 50 46 49 4c 45 44 49 52 } 		$a_01_5 = {4b 69 6c 6c 20 55 57 47 44 } 		$a_00_6 = {42 41 52 54 20 3d 20 22 22 20 2b 20 42 41 52 54 32 20 2b 20 43 68 72 } 		$a_00_7 = {3a 2f 2f 22 20 2b 20 55 52 4c 4c 53 4b 20 2b 20 22 2e 22 20 2b 20 43 68 72 28 41 73 63 28 22 65 22 29 29 20 2b 20 43 68 72 28 41 73 63 28 22 78 22 29 29 20 2b 20 22 65 22 } 		$a_01_8 = {4b 69 6c 6c 20 4d 59 5f 46 49 4c 45 4e 44 49 52 } 		$a_01_9 = {43 68 72 28 41 73 63 28 22 78 22 29 29 20 2b 20 43 68 72 28 41 73 63 28 22 65 22 29 29 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_01_2  & 1)*1+(#a_00_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_00_6  & 1)*1+(#a_00_7  & 1)*1+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1) >=4
 
}

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

89d6919f-1c43-4e5f-afa5-eb13dec1c7e2

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