TrojanDownloader_O97M_Dridex_RVA_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Dridex.RVA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Dridex_RVA_MTB{
	meta:
		description = "TrojanDownloader:O97M/Dridex.RVA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {52 65 70 6c 61 63 65 28 22 68 74 74 70 73 3a 2f 2f 73 75 72 75 73 74 6f 72 65 2e 63 6f 6d 2f 69 6d 61 67 65 59 39 61 3c 25 37 2f 63 61 63 68 65 2f 63 61 74 61 6c 6f 67 2f 64 65 6d 6f 2f 62 61 6e 6e 65 72 73 59 39 61 3c 25 37 2f 68 30 64 44 38 54 32 61 4e 52 7a 2e 70 68 70 22 2c 20 22 59 39 61 3c 25 37 22 2c 20 22 22 29 } 		$a_01_1 = {27 72 75 6e 64 6c 6c 33 4c 5e 4f 3c 24 48 3e 32 2e 65 78 65 20 22 2c 20 22 4c 5e 4f 3c 24 48 3e 22 2c } 		$a_01_2 = {3d 20 52 65 70 6c 61 63 65 28 22 57 2c 3c 36 64 34 4f 37 73 63 72 69 2c 3c 36 64 34 4f 37 70 74 2e 53 68 2c 3c 36 64 34 4f 37 65 6c 6c 22 2c 20 22 2c 3c 36 64 34 4f 37 22 2c 20 22 22 29 } 		$a_01_3 = {45 6e 76 69 72 6f 6e 28 6d 79 74 68 6f 70 6f 65 73 65 73 62 61 63 6b 2e 63 6f 72 70 75 6c 65 6e 74 6c 79 69 63 65 62 28 75 6e 70 61 70 65 72 61 6e 6f 64 6f 6e 74 69 29 29 } 		$a_01_4 = {2e 4f 70 65 6e 20 77 69 67 67 6c 65 72 73 63 6f 77 61 72 64 6c 2e 62 72 6f 6e 7a 69 74 65 73 63 79 63 6c 61 7a } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

ecb43037-cbf2-447b-9326-54d0d0aa71c6

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