Trojan_O97M_Obfuse_RKA_eml

YARA detection rule by roadwy

Trojan:O97M/Obfuse.RKA!eml,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00

rule Trojan_O97M_Obfuse_RKA_eml{
	meta:
		description = "Trojan:O97M/Obfuse.RKA!eml,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00 "
		
	strings :
		$a_02_0 = {63 3a 5c 4e 69 6c 57 69 6e 5c 4e 69 6c 57 69 6e 74 2e 62 61 74 22 2c 20 54 72 75 65 29 90 0a 2e 00 2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 22 } 		$a_00_1 = {2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 43 68 72 28 39 39 29 20 26 20 43 68 72 28 35 38 29 20 26 20 43 68 72 28 39 32 29 20 26 20 43 68 72 28 37 38 29 20 26 20 43 68 72 28 31 30 35 29 20 26 20 43 68 72 28 31 30 38 29 20 26 20 43 68 72 28 38 37 29 20 26 20 43 68 72 28 31 30 35 29 20 26 20 43 68 72 28 31 31 30 29 20 26 20 43 68 72 28 39 32 29 20 26 20 43 68 72 28 37 38 29 20 26 20 43 68 72 28 31 30 35 29 20 26 20 43 68 72 28 31 30 38 29 20 26 20 43 68 72 28 38 37 29 20 26 20 43 68 72 28 31 30 35 29 20 26 20 43 68 72 28 31 31 30 29 20 26 20 43 68 72 28 31 31 36 29 20 26 20 43 68 72 28 34 36 29 20 26 20 43 68 72 28 31 31 38 29 20 26 20 43 68 72 28 39 38 29 20 26 20 43 68 72 28 31 31 35 29 2c 20 54 72 75 65 29 } 		$a_00_2 = {44 65 6c 65 74 65 46 69 6c 65 20 3d 20 22 63 3a 5c 4e 69 6c 57 69 6e 5c 4e 69 6c 57 69 6e 74 2e 62 61 74 22 } 		$a_00_3 = {63 3a 5c 4e 69 6c 57 69 6e 5c 4e 69 6c 57 69 6e 74 2e 76 62 73 } 	condition:
		((#a_02_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1) >=3
 
}

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

56d9eb2e-ab5a-43a2-b31f-d4a8efd274ff

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