TrojanDownloader_O97M_Obfuse_SB_MSR_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.SB!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00

rule TrojanDownloader_O97M_Obfuse_SB_MSR_2{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.SB!MSR,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_03_0 = {53 68 65 65 74 [0-01] 2e 4f 4c 45 4f 62 6a 65 63 74 73 28 22 4f 62 6a 65 63 74 [0-02] 22 29 2e 43 6f 70 79 } 		$a_01_1 = {65 78 70 61 6e 64 45 6e 76 69 72 6f 6e 6d 65 6e 74 53 74 72 69 6e 67 73 28 22 25 41 50 50 44 41 54 41 25 22 29 } 		$a_01_2 = {4d 6b 44 69 72 20 22 43 3a 22 20 2b 20 22 5c 4b 42 34 22 20 2b 20 22 } 		$a_01_3 = {43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 57 73 63 72 69 70 74 2e 53 68 65 6c 6c 22 29 } 		$a_01_4 = {53 68 65 6c 6c 2e 52 75 6e 20 22 53 63 68 54 61 73 6b 73 20 2f 43 72 65 61 74 65 20 2f 53 43 } 		$a_01_5 = {43 6f 70 79 46 69 6c 65 20 45 6e 76 69 72 6f 6e 28 22 54 65 6d 70 22 29 20 26 20 22 5c 4b 42 34 22 20 2b } 	condition:
		((#a_03_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) >=6
 
}

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

e1026e3b-2f22-47b6-99a3-c7addf5c1e61

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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 ]]

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