TrojanDownloader_O97M_PShell_B

YARA detection rule by roadwy

TrojanDownloader:O97M/PShell.B,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_PShell_B{
	meta:
		description = "TrojanDownloader:O97M/PShell.B,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {3d 20 45 6e 76 69 72 6f 6e 24 28 22 41 70 70 44 61 74 61 22 29 20 26 20 22 5c 41 64 6f 62 65 41 63 72 6f 62 61 74 4c 69 63 65 6e 73 65 56 65 72 69 66 79 2e 70 73 31 22 } 		$a_00_1 = {2e 4f 70 65 6e 54 65 78 74 46 69 6c 65 28 71 67 63 4c 79 69 43 6b 78 2c 20 32 2c 20 54 72 75 65 29 } 		$a_00_2 = {3d 20 45 6e 76 69 72 6f 6e 24 28 22 41 70 70 44 61 74 61 22 29 20 26 20 22 5c 41 64 6f 62 65 41 63 72 6f 62 61 74 4c 69 63 65 6e 73 65 56 65 72 69 66 79 2e 76 62 73 22 } 		$a_00_3 = {28 25 57 53 63 72 69 70 74 2e 53 68 65 6c 6c 25 29 20 3a 20 6f 53 68 65 6c 6c 2e 72 75 6e 20 25 63 6d 64 2e 65 78 65 20 2f 63 20 50 6f 77 65 72 73 68 65 6c 6c } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1) >=4
 
}

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

7046916f-f55c-4eed-9df5-65d32b300bd5

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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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