Trojan_Win32_Remcos_BE_MTB

YARA detection rule by roadwy

Trojan:Win32/Remcos.BE!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 03 00 00

rule Trojan_Win32_Remcos_BE_MTB{
	meta:
		description = "Trojan:Win32/Remcos.BE!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 03 00 00 "
		
	strings :
		$a_03_0 = {83 c1 01 89 4d ?? 8b 55 ?? 3b 55 ?? 7d ?? e8 ?? ?? ff ff 89 45 ?? 8b 4d ?? 03 4d ?? 8a 55 ?? 88 11 eb } 		$a_03_1 = {65 c7 45 f8 ?? ?? ?? ?? c6 45 ?? 6c c6 45 ?? 6e c6 45 ?? 32 c6 45 ?? 6f c6 45 ?? 75 } 		$a_03_2 = {55 8b ec 51 a1 ?? ?? ?? ?? 8b 08 8b 15 ?? ?? ?? ?? 8b 04 91 2d ?? ?? ?? 00 89 45 fc 8b 0d ?? ?? ?? ?? 83 c1 01 89 0d ?? ?? ?? ?? 8b 45 fc 8b e5 5d c3 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*2) >=4
 
}

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

4bbe149f-6fb4-4737-8fda-c635f5a65a3e

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