Ransom_Win32_Stopcrypt_YAI_MTB

YARA detection rule by roadwy

Ransom:Win32/Stopcrypt.YAI!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 01 00 00

rule Ransom_Win32_Stopcrypt_YAI_MTB{
	meta:
		description = "Ransom:Win32/Stopcrypt.YAI!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 01 00 00 "
		
	strings :
		$a_03_0 = {8b 45 f8 8b 55 f4 33 45 ec 81 c3 ?? ?? ?? ?? 8b 4d dc 2b f0 89 45 f8 89 75 fc 4f } 	condition:
		((#a_03_0  & 1)*1) >=1
 
}

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

f95045f0-aad7-45a1-9669-15286dbfa411

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