Trojan_Win32_Guloader_KJ_MTB

YARA detection rule by roadwy

Trojan:Win32/Guloader.KJ!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Trojan_Win32_Guloader_KJ_MTB{
	meta:
		description = "Trojan:Win32/Guloader.KJ!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_81_0 = {62 72 61 77 6e 69 6c 79 20 62 69 66 6f 69 6c 20 61 66 73 6b 65 64 65 72 6e 65 } 		$a_81_1 = {65 6e 68 61 72 6d 6f 6e 69 63 20 73 6b 72 69 76 65 75 6e 64 65 72 6c 61 67 20 6f 66 66 65 72 } 		$a_81_2 = {75 6e 79 61 63 68 74 73 6d 61 6e 6c 69 6b 65 5c 63 61 6c 65 66 2e 62 69 6e } 		$a_81_3 = {73 76 69 6e 65 66 61 72 6d 65 6e 2e 69 6e 69 } 	condition:
		((#a_81_0  & 1)*1+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1) >=4
 
}

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

01d1bc16-9c3f-4a6a-af27-70a7cad24feb

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