Ransom_Linux_RansomExx_A_MTB

YARA detection rule by roadwy

Ransom:Linux/RansomExx.A!MTB,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 09 00 00

rule Ransom_Linux_RansomExx_A_MTB{
	meta:
		description = "Ransom:Linux/RansomExx.A!MTB,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 09 00 00 "
		
	strings :
		$a_00_0 = {48 8b 45 f8 48 01 d0 48 be 21 4e 45 57 53 5f 46 4f 48 bf 52 5f 53 54 4a 21 2e 74 48 89 30 48 89 78 08 66 c7 40 10 78 74 c6 40 12 00 48 8d 95 60 ff ff ff 48 8b 45 f8 48 89 d6 48 89 c7 e8 bd eb 01 00 83 f8 ff 74 0f 48 8b 45 f8 48 89 c7 e8 7c ea ff ff eb 01 } 		$a_02_1 = {48 01 d0 48 be 21 4e 45 57 53 5f 46 4f 48 bf 52 5f [0-20] 78 74 c6 40 ?? 00 48 8d 95 60 ff ff ff 48 8b 45 f8 48 89 d6 48 89 c7 e8 ?? ed 01 00 83 f8 ff 75 4c 48 8b 45 f8 48 8d 35 ?? ff 01 00 48 89 c7 e8 ?? ed ff ff 48 89 45 f0 48 83 7d f0 00 74 31 48 8b 45 f0 48 89 c1 ba ?? ?? 00 00 be 01 00 00 00 48 8d 3d ?? ff 01 00 e8 ?? ed ff ff } 		$a_00_2 = {43 72 79 70 74 4f 6e 65 46 69 6c 65 } 		$a_00_3 = {43 72 79 70 74 4f 6e 65 42 6c 6f 63 6b } 		$a_00_4 = {52 65 61 64 4d 65 53 74 6f 72 65 46 6f 72 44 69 72 } 		$a_00_5 = {47 65 74 52 61 6e 73 6f 6d 43 6f 6e 66 69 67 } 		$a_00_6 = {21 4e 45 57 53 5f 46 4f 52 5f 45 49 47 53 49 21 2e 74 78 74 } 		$a_00_7 = {59 6f 75 72 73 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 69 73 20 73 65 63 75 72 65 6c 79 20 45 4e 43 52 59 50 54 45 44 } 		$a_00_8 = {42 46 43 30 32 41 32 30 38 42 33 37 45 39 42 39 36 41 39 41 42 46 46 43 43 45 44 31 30 38 36 42 38 38 36 35 42 36 37 32 35 34 30 45 35 34 42 30 45 42 44 39 38 31 31 46 38 37 43 34 45 45 45 31 34 42 39 39 42 45 41 44 39 38 38 } 	condition:
		((#a_00_0  & 1)*2+(#a_02_1  & 1)*2+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_00_6  & 1)*1+(#a_00_7  & 1)*1+(#a_00_8  & 1)*1) >=3
 
}

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

f187a6be-5a05-453c-af44-52a8f43f1d59

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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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