TrojanDownloader_O97M_IcedId_BK_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/IcedId.BK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_IcedId_BK_MTB{
	meta:
		description = "TrojanDownloader:O97M/IcedId.BK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {3d 20 53 70 6c 69 74 28 61 71 4d 58 5a 39 28 66 72 6d 2e 70 61 74 68 73 2e 74 65 78 74 29 2c 20 22 7c 22 29 } 		$a_01_1 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 77 73 63 72 69 70 74 2e 73 68 65 6c 6c 22 29 2e 65 78 65 63 28 61 4a 4e 79 43 29 } 		$a_01_2 = {41 70 70 6c 69 63 61 74 69 6f 6e 2e 52 75 6e 20 22 61 76 56 66 65 62 22 2c 20 61 31 34 62 76 63 20 26 20 22 20 22 20 26 20 61 78 59 6a 47 20 26 20 22 6d 61 74 20 3a 20 22 22 22 20 26 20 61 55 7a 33 43 63 20 26 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

aefa0ca2-dccf-49a7-82bf-2a60bca3796c

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