Trojan_BAT_BMassKeyLogger_MTB

YARA detection rule by roadwy

Trojan:BAT/BMassKeyLogger!MTB,SIGNATURE_TYPE_PEHSTR_EXT,28 00 28 00 35 00 00

rule Trojan_BAT_BMassKeyLogger_MTB{
	meta:
		description = "Trojan:BAT/BMassKeyLogger!MTB,SIGNATURE_TYPE_PEHSTR_EXT,28 00 28 00 35 00 00 "
		
	strings :
		$a_01_0 = {46 74 70 45 6e 61 62 6c 65 } 		$a_01_1 = {46 74 70 48 6f 73 74 } 		$a_01_2 = {46 74 70 55 73 65 72 } 		$a_01_3 = {46 74 70 50 61 73 73 } 		$a_01_4 = {46 74 70 50 6f 72 74 } 		$a_01_5 = {45 6d 61 69 6c 45 6e 61 62 6c 65 } 		$a_01_6 = {45 6d 61 69 6c 41 64 64 72 65 73 73 } 		$a_01_7 = {45 6d 61 69 6c 53 65 6e 64 54 6f } 		$a_01_8 = {45 6d 61 69 6c 50 61 73 73 } 		$a_01_9 = {45 6d 61 69 6c 50 6f 72 74 } 		$a_01_10 = {45 6d 61 69 6c 53 73 6c } 		$a_01_11 = {45 6d 61 69 6c 43 6c 69 65 6e 74 } 		$a_01_12 = {50 61 6e 65 6c 45 6e 61 62 6c 65 } 		$a_01_13 = {50 61 6e 65 6c 48 6f 73 74 } 		$a_01_14 = {45 78 69 74 41 66 74 65 72 44 65 6c 69 76 65 72 79 } 		$a_01_15 = {53 65 6c 66 44 65 73 74 72 75 63 74 } 		$a_01_16 = {45 6e 61 62 6c 65 4d 75 74 65 78 } 		$a_01_17 = {45 6e 61 62 6c 65 41 6e 74 69 53 61 6e 64 62 6f 78 69 65 } 		$a_01_18 = {45 6e 61 62 6c 65 41 6e 74 69 56 4d 77 61 72 65 } 		$a_01_19 = {45 6e 61 62 6c 65 41 6e 74 69 44 65 62 75 67 67 65 72 } 		$a_01_20 = {45 6e 61 62 6c 65 57 44 45 78 63 6c 75 73 69 6f 6e } 		$a_01_21 = {45 6e 61 62 6c 65 53 65 61 72 63 68 41 6e 64 55 70 6c 6f 61 64 } 		$a_01_22 = {45 6e 61 62 6c 65 53 70 72 65 61 64 55 73 62 } 		$a_01_23 = {45 6e 61 62 6c 65 4b 65 79 6c 6f 67 67 65 72 } 		$a_01_24 = {45 6e 61 62 6c 65 42 72 6f 77 73 65 72 52 65 63 6f 76 65 72 79 } 		$a_01_25 = {45 6e 61 62 6c 65 53 63 72 65 65 6e 73 68 6f 74 } 		$a_01_26 = {45 6e 61 62 6c 65 46 6f 72 63 65 55 61 63 } 		$a_01_27 = {45 6e 61 62 6c 65 42 6f 74 4b 69 6c 6c 65 72 } 		$a_01_28 = {45 6e 61 62 6c 65 44 65 6c 65 74 65 5a 6f 6e 65 49 64 65 6e 74 69 66 69 65 72 } 		$a_01_29 = {45 6e 61 62 6c 65 4d 65 6d 6f 72 79 53 63 61 6e } 		$a_01_30 = {45 6e 61 62 6c 65 41 6e 74 69 48 6f 6e 65 79 70 6f 74 } 		$a_01_31 = {45 6e 61 62 6c 65 4f 6e 6c 79 53 65 6e 64 57 68 65 6e 50 61 73 73 77 6f 72 64 } 		$a_01_32 = {45 78 65 63 74 69 6f 6e 44 65 6c 61 79 } 		$a_01_33 = {53 65 6e 64 69 6e 67 49 6e 74 65 72 76 61 6c } 		$a_01_34 = {45 6e 61 62 6c 65 44 6f 77 6e 6c 6f 61 64 65 72 } 		$a_01_35 = {44 6f 77 6e 6c 6f 61 64 65 72 55 72 6c } 		$a_01_36 = {44 6f 77 6e 6c 6f 61 64 65 72 46 69 6c 65 6e 61 6d 65 } 		$a_01_37 = {44 6f 77 6e 6c 6f 61 64 65 72 4f 6e 63 65 } 		$a_01_38 = {45 6e 61 62 6c 65 42 69 6e 64 65 72 } 		$a_01_39 = {42 69 6e 64 65 72 42 79 74 65 73 } 		$a_01_40 = {42 69 6e 64 65 72 4e 61 6d 65 } 		$a_01_41 = {42 69 6e 64 65 72 4f 6e 63 65 } 		$a_01_42 = {45 6e 61 62 6c 65 49 6e 73 74 61 6c 6c } 		$a_01_43 = {49 6e 73 74 61 6c 6c 46 6f 6c 64 65 72 } 		$a_01_44 = {49 6e 73 74 61 6c 6c 53 65 63 6f 6e 64 46 6f 6c 64 65 72 } 		$a_01_45 = {49 6e 73 74 61 6c 6c 46 69 6c 65 } 		$a_01_46 = {53 65 61 72 63 68 41 6e 64 55 70 6c 6f 61 64 45 78 74 65 6e 73 69 6f 6e 73 } 		$a_01_47 = {53 65 61 72 63 68 41 6e 64 55 70 6c 6f 61 64 53 69 7a 65 4c 69 6d 69 74 } 		$a_01_48 = {53 65 61 72 63 68 41 6e 64 55 70 6c 6f 61 64 5a 69 70 53 69 7a 65 } 		$a_01_49 = {45 6e 61 62 6c 65 57 69 6e 64 6f 77 53 65 61 72 63 68 65 72 } 		$a_01_50 = {57 69 6e 64 6f 77 53 65 61 72 63 68 65 72 4b 65 79 77 6f 72 64 73 } 		$a_01_51 = {4d 61 69 6e 44 69 72 65 63 74 6f 72 79 } 		$a_01_52 = {53 61 66 65 54 68 72 65 61 64 } 	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+(#a_01_7  & 1)*1+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*1+(#a_01_11  & 1)*1+(#a_01_12  & 1)*1+(#a_01_13  & 1)*1+(#a_01_14  & 1)*1+(#a_01_15  & 1)*1+(#a_01_16  & 1)*1+(#a_01_17  & 1)*1+(#a_01_18  & 1)*1+(#a_01_19  & 1)*1+(#a_01_20  & 1)*1+(#a_01_21  & 1)*1+(#a_01_22  & 1)*1+(#a_01_23  & 1)*1+(#a_01_24  & 1)*1+(#a_01_25  & 1)*1+(#a_01_26  & 1)*1+(#a_01_27  & 1)*1+(#a_01_28  & 1)*1+(#a_01_29  & 1)*1+(#a_01_30  & 1)*1+(#a_01_31  & 1)*1+(#a_01_32  & 1)*1+(#a_01_33  & 1)*1+(#a_01_34  & 1)*1+(#a_01_35  & 1)*1+(#a_01_36  & 1)*1+(#a_01_37  & 1)*1+(#a_01_38  & 1)*1+(#a_01_39  & 1)*1+(#a_01_40  & 1)*1+(#a_01_41  & 1)*1+(#a_01_42  & 1)*1+(#a_01_43  & 1)*1+(#a_01_44  & 1)*1+(#a_01_45  & 1)*1+(#a_01_46  & 1)*1+(#a_01_47  & 1)*1+(#a_01_48  & 1)*1+(#a_01_49  & 1)*1+(#a_01_50  & 1)*1+(#a_01_51  & 1)*1+(#a_01_52  & 1)*1) >=40
 
}

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

92a5a862-6e4d-46ba-9f10-1c59f3528087

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