TrojanDownloader_Win32_Deyjalil_A_2

YARA detection rule by roadwy

TrojanDownloader:Win32/Deyjalil.A,SIGNATURE_TYPE_PEHSTR_EXT,ffffffa4 01 ffffff9a 01 10 00 00

rule TrojanDownloader_Win32_Deyjalil_A_2{
	meta:
		description = "TrojanDownloader:Win32/Deyjalil.A,SIGNATURE_TYPE_PEHSTR_EXT,ffffffa4 01 ffffff9a 01 10 00 00 "
		
	strings :
		$a_03_0 = {43 72 6f 73 73 72 69 64 65 72 41 70 70 30 30 30 34 ?? ?? ?? 2e 53 61 6e 64 62 6f 78 } 		$a_03_1 = {41 70 70 30 30 30 34 ?? ?? ?? 2e 46 42 41 70 69 2e 31 } 		$a_03_2 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 66 61 63 65 62 6f 6f 6b 20 6c 69 6c 79 20 73 79 73 74 65 6d 27 } 		$a_03_3 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 54 69 6d 65 6c 69 6e 65 20 52 65 6d 6f 76 65 72 27 } 		$a_03_4 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 57 69 6e 64 6f 77 73 20 55 70 64 61 74 65 20 41 64 64 2d 4f 6e 27 } 		$a_03_5 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 41 71 6f 72 69 2e 63 6f 6d 27 } 		$a_03_6 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 48 44 20 4d 65 64 69 61 20 43 6f 64 65 63 27 } 		$a_01_7 = {31 31 31 31 2d 31 31 30 30 31 31 34 39 31 31 37 32 7d 20 3d 20 73 20 27 56 69 64 65 6f 46 69 6c 65 44 6f 77 6e 6c 6f 61 64 27 } 		$a_03_8 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 41 64 2d 4b 69 6c 6c 65 72 20 50 72 6f 27 } 		$a_03_9 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 41 71 6f 72 69 20 62 72 6f 77 73 65 72 20 65 78 74 65 6e 73 69 6f 6e 27 } 		$a_03_10 = {31 31 31 31 2d 31 31 30 30 31 31 34 ?? ?? ?? ?? ?? 7d 20 3d 20 73 20 27 46 42 4c 49 58 2d 53 4f 43 49 41 4c 27 } 		$a_01_11 = {54 79 70 65 4c 69 62 27 20 3d 20 73 20 27 7b 34 34 34 34 34 34 34 34 2d 34 34 34 34 2d } 		$a_01_12 = {2e 42 48 4f 20 3d 20 73 20 27 43 72 6f 73 73 72 69 64 65 72 41 70 70 30 30 30 34 } 		$a_01_13 = {32 32 32 32 2d 32 32 32 32 2d 32 32 30 30 32 32 34 } 		$a_01_14 = {43 4c 53 49 44 20 3d 20 73 20 27 7b 31 31 31 31 31 31 31 31 2d 31 31 31 31 2d 31 31 31 31 2d } 		$a_01_15 = {46 6f 72 63 65 52 65 6d 6f 76 65 20 7b 31 31 31 31 31 31 31 31 2d 31 31 31 31 2d 31 31 31 31 2d } 	condition:
		((#a_03_0  & 1)*100+(#a_03_1  & 1)*100+(#a_03_2  & 1)*100+(#a_03_3  & 1)*100+(#a_03_4  & 1)*100+(#a_03_5  & 1)*100+(#a_03_6  & 1)*100+(#a_01_7  & 1)*100+(#a_03_8  & 1)*100+(#a_03_9  & 1)*100+(#a_03_10  & 1)*100+(#a_01_11  & 1)*50+(#a_01_12  & 1)*50+(#a_01_13  & 1)*10+(#a_01_14  & 1)*10+(#a_01_15  & 1)*10) >=410
 
}

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

0af9c1a6-610e-48ac-9235-0699386cf72d

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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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