Ransom_Win32_Cerber_K_

YARA detection rule by roadwy

Ransom:Win32/Cerber.K!!Cerber.gen!A,SIGNATURE_TYPE_ARHSTR_EXT,08 00 08 00 22 00 00

rule Ransom_Win32_Cerber_K_{
	meta:
		description = "Ransom:Win32/Cerber.K!!Cerber.gen!A,SIGNATURE_TYPE_ARHSTR_EXT,08 00 08 00 22 00 00 "
		
	strings :
		$a_01_0 = {c7 06 46 72 62 52 } 		$a_01_1 = {74 0d 8b 4c 24 04 c7 00 6e 6f 73 6a 89 48 14 c3 } 		$a_03_2 = {83 45 fc 02 e9 ?? ff ff ff 8d 88 ?? ?? ff ff 3b cb 77 ?? 80 7e 01 5c 0f 85 ?? 00 00 00 80 7e 02 75 } 		$a_03_3 = {8b 4e 20 83 66 20 00 89 4e 1c 80 38 3a 0f 85 ?? ?? 00 00 40 ff 0f 0f 84 } 		$a_01_4 = {6a 6b 58 6a 65 66 89 45 } 		$a_03_5 = {6a 48 6a 5a 56 89 45 ?? ff 15 ?? ?? ?? ?? 50 68 6f c4 3a 35 } 		$a_03_6 = {8a 45 ff ff 75 10 88 46 08 8b 45 f0 89 46 09 66 a1 ?? ?? ?? ?? 66 89 46 0f ff 15 ?? ?? ?? ?? ff 75 ec 03 c0 8b d7 66 89 46 06 66 89 5e 0d } 		$a_03_7 = {38 5d fe 74 12 ff 75 f8 ff 75 08 ff 15 ?? ?? ?? ?? 85 c0 0f 95 45 fe 8b 75 f8 } 		$a_03_8 = {7f 0f 8b 45 ?? 3b 05 ?? ?? ?? ?? 0f 82 ?? ?? 00 00 6a 0f 6a 0b 5b eb 0e } 		$a_80_9 = {59 4f 55 52 20 44 4f 43 55 4d 45 4e 54 53 2c 20 50 48 4f 54 30 53 2c 20 44 41 54 41 42 41 53 45 53 20 41 4e 44 20 4f 54 48 45 52 20 49 4d 50 4f 52 54 41 4e 54 20 46 49 4c 45 53 20 48 41 56 45 20 42 45 45 4e 20 45 4e 43 52 59 50 54 45 44 21 } 		$a_80_10 = {49 66 20 79 6f 75 20 63 61 6e 6e 6f 74 20 66 69 6e 64 20 61 6e 79 20 28 2a 5f 52 45 41 44 5f 54 48 49 53 5f 46 49 4c 45 5f 2a 29 20 66 69 6c 65 20 61 74 20 79 6f 75 72 20 50 43 2c 20 66 6f 6c 6c 6f 77 20 74 68 65 20 69 6e 73 74 72 75 63 74 69 6f 6e 73 20 62 65 6c 6f 77 3a } 		$a_80_11 = {54 68 65 20 6f 6e 6c 79 20 77 61 79 20 74 6f 20 64 65 63 72 79 70 74 20 79 6f 75 72 20 66 69 6c 65 73 20 69 73 20 74 6f 20 72 65 63 65 69 76 65 } 		$a_80_12 = {25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 35 58 25 30 33 58 } 		$a_80_13 = {25 63 25 63 25 63 25 63 2d 25 63 25 63 25 63 25 63 2d 25 63 25 63 25 63 25 63 2d 25 63 25 63 25 63 25 63 2d 25 63 25 63 25 63 25 63 } 		$a_80_14 = {7b 25 30 38 58 2d 25 30 34 58 2d 25 30 34 58 2d 25 30 32 58 25 30 32 58 2d 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 7d } 		$a_80_15 = {43 45 52 42 45 52 5f 43 4f 52 45 5f 50 52 4f 54 45 43 54 49 4f 4e 5f 4d 55 54 45 58 } 		$a_80_16 = {25 73 5c 2a 2e 6c 6e 6b } 		$a_80_17 = {7b 52 41 4e 44 7d } 		$a_80_18 = {7b 42 43 48 4e 7d } 		$a_80_19 = {7b 49 4c 5f 31 7d } 		$a_80_20 = {7b 49 4c 5f 32 7d } 		$a_80_21 = {7b 53 54 4f 50 5f 52 45 41 53 4f 4e 7d } 		$a_80_22 = {7b 43 4f 55 4e 54 5f 46 49 4c 45 53 7d } 		$a_80_23 = {7b 50 41 52 54 4e 45 52 5f 49 44 7d } 		$a_80_24 = {25 5b 5e 2f 5d 25 5b 2f 5d 25 64 } 		$a_80_25 = {7b 49 53 5f 41 44 4d 49 4e 7d } 		$a_80_26 = {72 73 61 5f 6b 65 79 5f 73 69 7a 65 } 		$a_80_27 = {5c 63 65 72 62 65 72 5f 64 65 62 75 67 2e 74 78 74 } 		$a_80_28 = {64 61 74 61 20 6c 65 6e 3a 20 25 64 2c 20 6f 76 65 72 6c 61 79 3a 20 25 73 } 		$a_80_29 = {5f 52 5f 45 5f 41 5f 44 5f 5f 5f 54 5f 48 5f 49 5f 53 5f 5f 5f 7b 52 41 4e 44 7d 5f } 		$a_80_30 = {2f 2f 7b 54 4f 52 7d 2e 6f 6e 69 6f 6e 2f 7b 50 43 5f 49 44 7d } 		$a_80_31 = {4c 53 30 74 4c 53 31 43 52 55 64 4a 54 69 42 51 56 55 4a 4d 53 55 4d 67 53 30 56 5a 4c 53 30 74 4c 53 30 4b } 		$a_80_32 = {65 30 31 45 4e 56 39 4c 52 56 6c 39 65 31 42 42 55 6c 52 4f 52 56 4a 66 53 55 52 39 65 30 39 54 66 58 74 4a 55 31 39 59 4e 6a 52 39 65 30 6c 54 58 30 46 45 54 55 6c 4f 66 58 74 44 54 31 56 4f 56 46 39 47 53 55 78 46 55 33 31 37 55 31 52 50 55 46 39 53 52 55 46 54 54 30 35 39 65 31 4e 55 51 56 52 56 55 33 30 3d } 		$a_80_33 = {50 43 46 45 54 30 4e 55 57 56 42 46 49 47 68 30 62 57 77 2b 44 51 6f 38 61 48 52 74 62 43 42 73 59 57 35 6e 50 53 4a 6c 62 69 49 2b 44 51 6f 38 61 47 56 68 5a 44 34 4e 43 67 6b 38 62 57 56 30 59 53 42 6a 61 47 46 79 63 32 56 30 50 53 4a 31 64 47 59 74 4f 43 49 2b 44 51 6f 4a 50 48 52 70 64 47 78 6c 50 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_01_4  & 1)*1+(#a_03_5  & 1)*2+(#a_03_6  & 1)*2+(#a_03_7  & 1)*1+(#a_03_8  & 1)*2+(#a_80_9  & 1)*1+(#a_80_10  & 1)*1+(#a_80_11  & 1)*1+(#a_80_12  & 1)*1+(#a_80_13  & 1)*1+(#a_80_14  & 1)*1+(#a_80_15  & 1)*1+(#a_80_16  & 1)*1+(#a_80_17  & 1)*1+(#a_80_18  & 1)*1+(#a_80_19  & 1)*1+(#a_80_20  & 1)*1+(#a_80_21  & 1)*1+(#a_80_22  & 1)*1+(#a_80_23  & 1)*1+(#a_80_24  & 1)*1+(#a_80_25  & 1)*1+(#a_80_26  & 1)*1+(#a_80_27  & 1)*1+(#a_80_28  & 1)*1+(#a_80_29  & 1)*1+(#a_80_30  & 1)*1+(#a_80_31  & 1)*1+(#a_80_32  & 1)*2+(#a_80_33  & 1)*2) >=8
 
}

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

b2f1ceda-bdbd-4bfc-96f6-67b405a2439f

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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 ]]

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Format & documentation suggestions

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[[ reason ]]

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

[[ currentRule.title ]]

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