Trojan_BAT_Crysan_CCJR_MTB

YARA detection rule by roadwy

Trojan:BAT/Crysan.CCJR!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 04 00 00

rule Trojan_BAT_Crysan_CCJR_MTB{
	meta:
		description = "Trojan:BAT/Crysan.CCJR!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 04 00 00 "
		
	strings :
		$a_81_0 = {74 44 41 63 74 49 51 37 55 37 53 53 34 65 62 4a 53 37 45 61 4f 41 3d 3d } 		$a_81_1 = {48 66 67 4f 71 34 6a 55 49 67 45 3d } 		$a_81_2 = {63 3a 5c 74 65 6d 70 5c 41 73 73 65 6d 62 6c 79 2e 65 78 65 } 		$a_81_3 = {42 63 69 66 6a 68 7a 76 75 77 } 	condition:
		((#a_81_0  & 1)*2+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1) >=5
 
}

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

47aead5e-35ea-4d4a-b1fd-0a4fe0eaf4b0

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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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