TrojanDownloader_O97M_Ursnif_AG_MSR_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Ursnif.AG!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Ursnif_AG_MSR_2{
	meta:
		description = "TrojanDownloader:O97M/Ursnif.AG!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {53 75 62 20 47 38 47 31 4b 34 28 29 } 		$a_01_1 = {53 65 74 20 64 61 72 61 75 66 68 20 3d 20 68 65 61 64 62 2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 22 43 3a 5c 50 72 6f 67 72 61 6d 44 61 74 61 5c 67 72 61 6e 69 74 65 62 2e 74 78 74 22 29 } 		$a_01_2 = {53 65 74 20 73 68 6f 77 73 70 20 3d 20 62 65 6c 69 65 76 65 73 70 2e 65 78 65 63 71 75 65 72 79 28 22 73 65 6c 65 63 74 20 2a 20 66 72 6f 6d 20 61 6e 74 69 76 69 72 75 73 70 72 6f 64 75 63 74 22 2c 20 22 77 71 6c 22 2c 20 30 29 } 		$a_01_3 = {64 61 72 61 75 66 68 2e 57 72 69 74 65 20 22 66 75 6e 63 74 69 6f 6e 20 65 42 6f 6f 6b 73 6a 28 24 64 65 74 65 63 74 69 76 65 66 29 7b 24 70 6c 61 74 66 6f 72 6d 69 20 3d 20 5b 4e 65 74 2e 57 65 62 52 65 71 75 65 73 74 5d 3a 3a 43 72 65 61 74 65 28 27 68 74 74 70 73 3a 2f 2f 54 68 65 46 69 6e 61 6e 63 65 49 6e 76 65 73 74 2e 63 6f 6d 2f 27 2b 24 64 65 74 65 63 74 69 76 65 66 29 3b 24 70 6c 61 74 66 6f 72 6d 69 2e 4d 65 74 68 6f 64 3d 27 47 45 54 27 3b } 		$a_01_4 = {69 6d 70 61 72 74 69 61 6c 65 20 3d 20 22 43 3a 5c 50 72 6f 67 72 61 6d 44 61 74 61 5c 70 72 6e 63 6e 66 67 2e 74 78 74 22 } 		$a_01_5 = {61 6e 73 77 65 72 65 64 72 20 3d 20 73 74 72 6f 6e 67 65 72 6a 20 4f 72 20 49 6e 53 74 72 28 64 69 66 66 69 63 75 6c 74 79 66 2c 20 22 46 2d 53 65 63 75 72 65 22 29 20 4f 72 20 49 6e 53 74 72 28 64 69 66 66 69 63 75 6c 74 79 66 2c 20 22 42 69 74 44 65 66 65 6e 64 65 72 22 29 } 		$a_01_6 = {43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 53 68 65 6c 6c 2e 41 70 70 6c 69 63 61 74 69 6f 6e 22 29 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 22 63 73 63 72 69 70 74 2e 65 78 65 22 2c 20 22 43 3a 5c 77 69 6e 64 6f 77 73 5c 53 79 73 74 65 6d 33 32 5c 50 72 69 6e 74 69 6e 67 5f 41 64 6d 69 6e 5f 53 63 72 69 70 74 73 5c 65 6e 2d 55 53 5c 70 72 6e 70 6f 72 74 2e 76 22 } 	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+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=7
 
}

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

df3a2ca7-6647-4508-8101-8c0f5ea3c3a3

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