Ransom_MSIL_FileCoder_BB_MSR

YARA detection rule by roadwy

Ransom:MSIL/FileCoder.BB!MSR,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 04 00 00

rule Ransom_MSIL_FileCoder_BB_MSR{
	meta:
		description = "Ransom:MSIL/FileCoder.BB!MSR,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 04 00 00 "
		
	strings :
		$a_80_0 = {42 42 20 72 61 6e 73 6f 6d 77 61 72 65 } 		$a_80_1 = {2e 65 6e 63 72 79 70 74 65 64 62 79 42 42 } 		$a_80_2 = {48 65 6c 6c 6f 21 20 49 27 6d 20 61 20 42 42 2c 20 61 6e 64 20 49 6d 20 65 6e 63 72 79 70 74 20 79 6f 75 72 } 		$a_80_3 = {50 6c 65 61 73 65 20 67 69 76 65 20 6d 65 20 61 20 42 54 43 20 54 6f 20 61 64 64 72 65 73 73 3a } 	condition:
		((#a_80_0  & 1)*2+(#a_80_1  & 1)*2+(#a_80_2  & 1)*2+(#a_80_3  & 1)*1) >=7
 
}

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

686a850e-af76-4c48-8d3f-e9e98d5d7b76

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