psLoader

YARA detection rule by OPSWAT

Rule psLoader (No description metadata provided).

rule psLoader : hardened
{
	meta:
		author = "OPSWAT"
		score = 80

	strings:
		$comment_1 = {4d 41 54 52 49 58 20 44 45 43 52 59 50 54 49 4f 4e 20 53 59 53 54 45 4d 20 2d 20 41 45 53 20 4c 61 79 65 72 65 64 20 44 65 66 65 6e 73 65 20 50 61 74 74 65 72 6e}
		$comment_2 = {43 72 65 61 74 65 20 41 45 53 20 64 65 63 72 79 70 74 6f 72}
		$comment_3 = {52 6f 74 61 74 65 20 65 78 65 63 75 74 69 6f 6e 20 6d 65 74 68 6f 64 73 20 77 69 74 68 20 6d 6f 72 65 20 72 61 6e 64 6f 6d 6e 65 73 73}
		$comment_4 = {43 68 65 63 6b 20 66 6f 72 20 63 6f 6d 6d 6f 6e 20 73 61 6e 64 62 6f 78 20 75 73 65 72 6e 61 6d 65 73}
		$comment_5 = {56 61 6c 69 64 61 74 65 20 64 65 63 72 79 70 74 65 64 20 63 6f 6e 74 65 6e 74}
		$comment_6 = {52 61 6e 64 6f 6d 20 64 65 6c 61 79 20 77 69 74 68 20 6a 69 74 74 65 72 20 74 6f 20 61 76 6f 69 64 20 70 61 74 74 65 72 6e 20 72 65 63 6f 67 6e 69 74 69 6f 6e}
		$comment_7 = {41 64 64 20 72 61 6e 64 6f 6d 20 67 61 72 62 61 67 65 20 6f 70 65 72 61 74 69 6f 6e 73 20 74 6f 20 6f 62 66 75 73 63 61 74 65}
		$comment_8 = {41 64 76 61 6e 63 65 64 20 63 6c 65 61 6e 75 70 20 2d 20 6f 76 65 72 77 72 69 74 65 20 73 65 6e 73 69 74 69 76 65 20 76 61 72 69 61 62 6c 65 73}
		$comment_9 = {45 78 65 63 75 74 65 20 41 45 53 20 64 65 63 72 79 70 74 69 6f 6e 20 73 65 71 75 65 6e 63 65}
		$comment_10 = {46 6f 72 63 65 20 67 61 72 62 61 67 65 20 63 6f 6c 6c 65 63 74 69 6f 6e}
		$comment_11 = {45 78 65 63 75 74 65 20 77 69 74 68 20 65 6e 68 61 6e 63 65 64 20 6f 62 66 75 73 63 61 74 69 6f 6e}
		$layer_1 = {4c 41 59 45 52 20 31 3a 20 44 61 74 61 20 52 65 63 6f 6e 73 74 72 75 63 74 69 6f 6e}
		$layer_2 = {4c 41 59 45 52 20 32 3a 20 43 6f 72 65 20 54 72 61 6e 73 66 6f 72 6d 61 74 69 6f 6e 20 46 75 6e 63 74 69 6f 6e 73}
		$layer_3 = {4c 41 59 45 52 20 33 3a 20 45 78 65 63 75 74 69 6f 6e 20 45 6e 67 69 6e 65 20 77 69 74 68 20 41 6e 74 69 2d 44 65 62 75 67 67 69 6e 67}
		$layer_4 = {4c 41 59 45 52 20 34 3a 20 41 64 76 61 6e 63 65 64 20 56 61 6c 69 64 61 74 69 6f 6e 20 46 75 6e 63 74 69 6f 6e 73}
		$layer_5 = {4c 41 59 45 52 20 35 3a 20 4d 61 69 6e 20 4f 72 63 68 65 73 74 72 61 74 69 6f 6e 20 53 65 71 75 65 6e 63 65}
		$layer_6 = {4c 41 59 45 52 20 36 3a 20 45 78 65 63 75 74 69 6f 6e 20 46 72 61 6d 65 77 6f 72 6b}
		$phase_1 = {50 68 61 73 65 20 30 3a 20 45 6e 76 69 72 6f 6e 6d 65 6e 74 20 56 61 6c 69 64 61 74 69 6f 6e}
		$phase_2 = {50 68 61 73 65 20 31 3a 20 4d 61 74 65 72 69 61 6c 20 52 65 63 6f 6e 73 74 72 75 63 74 69 6f 6e}
		$phase_3 = {50 68 61 73 65 20 32 3a 20 41 45 53 20 44 65 63 72 79 70 74 69 6f 6e}
		$phase_4 = {50 68 61 73 65 20 33 3a 20 50 61 79 6c 6f 61 64 20 52 65 63 6f 6e 73 74 72 75 63 74 69 6f 6e 20 77 69 74 68 20 76 61 6c 69 64 61 74 69 6f 6e}
		$var_1 = {43 69 70 68 65 72 4d 61 74 72 69 78}
		$var_2 = {4b 65 79 43 69 70 68 65 72}
		$var_3 = {49 56 43 69 70 68 65 72}
		$var_4 = {62 79 74 65 53 74 72 65 61 6d}
		$var_5 = {73 63 72 69 70 74 42 6c 6f 63 6b}
		$var_6 = {53 63 72 69 70 74 50 61 79 6c 6f 61 64}
		$var_7 = {73 65 6c 65 63 74 65 64 56 65 63 74 6f 72}
		$var_8 = {72 6f 74 61 74 69 6f 6e 53 65 65 64}
		$var_9 = {73 75 73 70 69 63 69 6f 75 73 50 72 6f 63 65 73 73 65 73}
		$var_10 = {72 75 6e 6e 69 6e 67 50 72 6f 63 65 73 73 65 73}
		$var_11 = {73 61 6e 64 62 6f 78 55 73 65 72 73}
		$var_12 = {63 75 72 72 65 6e 74 55 73 65 72}
		$func_1 = {49 6e 69 74 69 61 74 65 2d 41 45 53 44 65 63 72 79 70 74 69 6f 6e 53 65 71 75 65 6e 63 65}
		$func_2 = {49 6e 76 6f 6b 65 2d 53 74 65 61 6c 74 68 45 78 65 63 75 74 69 6f 6e}
		$msg_1 = {53 75 73 70 69 63 69 6f 75 73 20 65 6e 76 69 72 6f 6e 6d 65 6e 74 20 64 65 74 65 63 74 65 64}
		$msg_2 = {52 65 63 6f 6e 73 74 72 75 63 74 69 6e 67 20 70 61 79 6c 6f 61 64 2e 2e 2e}
		$msg_3 = {44 65 63 72 79 70 74 65 64 20 63 6f 6e 74 65 6e 74 20 61 70 70 65 61 72 73 20 69 6e 76 61 6c 69 64}
		$msg_4 = {4e 6f 20 70 61 79 6c 6f 61 64 20 74 6f 20 65 78 65 63 75 74 65}
		$failure_1 = {56 41 4c 49 44 41 54 49 4f 4e 5f 46 41 49 4c 55 52 45}
		$failure_2 = {4d 41 54 52 49 58 5f 46 41 49 4c 55 52 45 5f 41 45 53}
		$failure_3 = {50 41 59 4c 4f 41 44 5f 46 41 49 4c 55 52 45}

	condition:
		4 of ( $comment* ) or 3 of ( $layer* ) or 3 of ( $phase* ) or 7 of ( $var* ) or 1 of ( $func* ) or 2 of ( $msg* ) or all of ( $failure* )
}

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

a1300f4d-0bd4-460e-89f7-b81388d96487

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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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