TrojanDropper_Win32_Swisyn_A

YARA detection rule by roadwy

TrojanDropper:Win32/Swisyn.A,SIGNATURE_TYPE_PEHSTR,19 00 19 00 1c 00 00

rule TrojanDropper_Win32_Swisyn_A{
	meta:
		description = "TrojanDropper:Win32/Swisyn.A,SIGNATURE_TYPE_PEHSTR,19 00 19 00 1c 00 00 "
		
	strings :
		$a_01_0 = {6b 6b 63 2d 31 32 6b 64 6d 71 64 6a } 		$a_01_1 = {73 77 64 73 6d 6e 42 63 60 64 71 67 53 73 64 46 } 		$a_01_2 = {73 77 64 73 6d 6e 42 63 60 64 71 67 53 73 64 52 } 		$a_01_3 = {40 72 72 64 62 6e 71 4f 64 73 60 64 71 42 } 		$a_01_4 = {77 44 62 6e 6b 6b 40 6b 60 74 73 71 68 55 } 		$a_01_5 = {40 64 62 71 74 6e 72 64 51 63 6d 68 45 } 		$a_01_6 = {64 62 71 74 6e 72 64 51 65 6e 64 79 68 52 } 		$a_01_7 = {64 62 71 74 6e 72 64 51 63 60 6e 4b } 		$a_01_8 = {64 62 71 74 6e 72 64 51 6a 62 6e 4b } 		$a_01_9 = {64 62 71 74 6e 72 64 51 64 64 71 45 } 		$a_01_10 = {40 72 64 6c 60 4d 64 62 71 74 6e 72 64 51 6c 74 6d 44 } 		$a_01_11 = {40 78 71 6e 73 62 64 71 68 43 6c 64 73 72 78 52 73 64 46 } 		$a_01_12 = {40 67 73 60 4f 6f 6c 64 53 73 64 46 } 		$a_01_13 = {40 78 71 6e 73 62 64 71 68 43 72 76 6e 63 6d 68 56 73 64 46 } 		$a_01_14 = {64 63 6e 4c 71 6e 71 71 44 73 64 52 } 		$a_01_15 = {40 64 6d 68 4b 63 6d 60 6c 6c 6e 42 73 64 46 } 		$a_01_16 = {40 64 6b 68 45 64 73 64 6b 64 43 } 		$a_01_17 = {40 64 6b 68 45 64 73 60 64 71 42 } 		$a_01_18 = {64 6b 68 45 63 60 64 51 } 		$a_01_19 = {64 6b 68 45 64 73 68 71 56 } 		$a_01_20 = {64 6b 63 6d 60 47 64 72 6e 6b 42 } 		$a_01_21 = {71 64 73 6d 68 6e 4f 64 6b 68 45 73 64 52 } 		$a_01_22 = {6b 6b 63 2d 6f 6b 67 64 66 60 6c 68 } 		$a_01_23 = {72 73 72 68 77 44 67 73 60 4f 78 71 6e 73 62 64 71 68 43 64 71 74 52 64 6a 60 4c } 		$a_01_24 = {6b 6b 63 2d 31 32 6b 6b 64 67 72 } 		$a_01_25 = {40 64 73 74 62 64 77 44 6b 6b 64 67 52 } 		$a_01_26 = {40 64 6b 61 60 73 74 62 64 77 44 63 6d 68 45 } 		$a_01_27 = {40 67 73 60 4f 71 64 63 6b 6e 45 6b 60 68 62 64 6f 52 73 64 46 47 52 } 	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) >=25
 
}

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

7b78e38b-ec44-49ac-b18b-33b9e65da6c3

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