Trojan_Win32_FormBook_BB_MTB_2

YARA detection rule by roadwy

Trojan:Win32/FormBook.BB!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 02 00 00

rule Trojan_Win32_FormBook_BB_MTB_2{
	meta:
		description = "Trojan:Win32/FormBook.BB!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 02 00 00 "
		
	strings :
		$a_02_0 = {0f 7e da 81 [0-30] 90 13 [0-30] 46 [0-30] 8b 17 [0-20] 0f 6e fe [0-25] 90 18 [0-25] 0f 6e da [0-25] 0f ef df } 		$a_02_1 = {0f 7e da 66 [0-30] 90 13 [0-30] 46 [0-30] 8b 17 [0-20] 0f 6e fe [0-25] 90 18 [0-25] 0f 6e da [0-25] 0f ef df } 	condition:
		((#a_02_0  & 1)*1+(#a_02_1  & 1)*1) >=1
 
}

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

f41fbc2e-c4f6-4184-bf27-fe114ab31e2d

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