Trojan_Win32_Delf_BB

YARA detection rule by roadwy

Trojan:Win32/Delf.BB,SIGNATURE_TYPE_PEHSTR_EXT,61 01 5f 01 20 00 00

rule Trojan_Win32_Delf_BB{
	meta:
		description = "Trojan:Win32/Delf.BB,SIGNATURE_TYPE_PEHSTR_EXT,61 01 5f 01 20 00 00 "
		
	strings :
		$a_00_0 = {53 65 72 76 69 63 65 44 6c 6c 2e 64 6c 6c } 		$a_00_1 = {53 65 72 76 69 63 65 4d 61 69 6e } 		$a_01_2 = {57 72 69 74 65 50 72 6f 63 65 73 73 4d 65 6d 6f 72 79 } 		$a_00_3 = {44 45 4c 53 65 72 } 		$a_00_4 = {55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 41 } 		$a_01_5 = {49 6e 74 65 72 6e 65 74 52 65 61 64 46 69 6c 65 } 		$a_00_6 = {53 57 5a 32 30 30 36 } 		$a_00_7 = {57 4a 44 32 30 30 36 } 		$a_00_8 = {6e 65 65 64 20 64 69 63 74 69 6f 6e 61 72 79 } 		$a_00_9 = {46 69 6e 64 45 78 65 63 75 74 61 62 6c 65 41 } 		$a_00_10 = {41 64 6a 75 73 74 54 6f 6b 65 6e 50 72 69 76 69 6c 65 67 65 73 } 		$a_00_11 = {46 74 70 47 65 74 46 69 6c 65 41 } 		$a_00_12 = {46 74 70 50 75 74 46 69 6c 65 41 } 		$a_00_13 = {47 65 74 50 72 6f 63 65 73 73 4d 65 6d 6f 72 79 49 6e 66 6f } 		$a_00_14 = {49 6e 74 65 72 6e 65 74 43 6f 6e 6e 65 63 74 41 } 		$a_01_15 = {49 6e 74 65 72 6e 65 74 4f 70 65 6e 41 } 		$a_00_16 = {4c 6f 6f 6b 75 70 50 72 69 76 69 6c 65 67 65 56 61 6c 75 65 41 } 		$a_00_17 = {4f 70 65 6e 53 43 4d 61 6e 61 67 65 72 41 } 		$a_00_18 = {4f 70 65 6e 53 65 72 76 69 63 65 41 } 		$a_00_19 = {51 75 65 72 79 53 65 72 76 69 63 65 53 74 61 74 75 73 } 		$a_01_20 = {52 65 67 69 73 74 65 72 53 65 72 76 69 63 65 43 74 72 6c 48 61 6e 64 6c 65 72 41 } 		$a_00_21 = {52 65 6d 6f 76 65 44 69 72 65 63 74 6f 72 79 41 } 		$a_00_22 = {53 68 65 6c 6c 45 78 65 63 75 74 65 41 } 		$a_00_23 = {53 68 65 6c 6c 45 78 65 63 75 74 65 45 78 41 } 		$a_00_24 = {73 6f 63 6b 65 74 } 		$a_00_25 = {53 74 61 72 74 53 65 72 76 69 63 65 41 } 		$a_00_26 = {57 69 6e 45 78 65 63 } 		$a_00_27 = {54 52 65 67 69 73 74 72 79 53 } 		$a_00_28 = {53 4f 46 54 57 41 52 45 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 20 4e 54 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 44 72 69 76 65 72 73 33 32 5c } 		$a_00_29 = {53 6f 66 74 77 61 72 65 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 20 4e 54 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 57 69 6e 6c 6f 67 6f 6e 5c 4e 6f 74 69 66 79 5c } 		$a_00_30 = {25 53 79 73 74 65 6d 52 6f 6f 74 25 } 		$a_00_31 = {53 65 52 65 73 74 6f 72 65 50 72 69 76 69 6c 65 67 65 } 	condition:
		((#a_00_0  & 1)*100+(#a_00_1  & 1)*100+(#a_01_2  & 1)*100+(#a_00_3  & 1)*20+(#a_00_4  & 1)*15+(#a_01_5  & 1)*15+(#a_00_6  & 1)*10+(#a_00_7  & 1)*10+(#a_00_8  & 1)*10+(#a_00_9  & 1)*1+(#a_00_10  & 1)*1+(#a_00_11  & 1)*1+(#a_00_12  & 1)*1+(#a_00_13  & 1)*1+(#a_00_14  & 1)*1+(#a_01_15  & 1)*1+(#a_00_16  & 1)*1+(#a_00_17  & 1)*1+(#a_00_18  & 1)*1+(#a_00_19  & 1)*1+(#a_01_20  & 1)*1+(#a_00_21  & 1)*1+(#a_00_22  & 1)*1+(#a_00_23  & 1)*1+(#a_00_24  & 1)*1+(#a_00_25  & 1)*1+(#a_00_26  & 1)*1+(#a_00_27  & 1)*1+(#a_00_28  & 1)*5+(#a_00_29  & 1)*5+(#a_00_30  & 1)*1+(#a_00_31  & 1)*1) >=351
 
}

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

f8c7fe7c-eeda-4bfb-8fe7-bace06a2c4a6

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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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