Trojan_Win32_GenRansom_STH

YARA detection rule by roadwy

Trojan:Win32/GenRansom.STH,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 0f 00 00

rule Trojan_Win32_GenRansom_STH{
	meta:
		description = "Trojan:Win32/GenRansom.STH,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 0f 00 00 "
		
	strings :
		$a_80_0 = {41 6c 6c 20 46 69 6c 65 73 20 68 61 73 20 62 65 65 6e 20 65 78 66 69 6c 74 72 61 74 65 64 } 		$a_80_1 = {41 63 63 65 73 73 20 64 65 6e 69 65 64 20 74 6f 20 66 69 6c 65 } 		$a_80_2 = {49 4d 50 4f 52 54 41 4e 54 3a 20 4b 65 65 70 20 74 68 69 73 20 69 6e 66 6f 72 6d 61 74 69 6f 6e 20 73 61 66 65 20 61 6e 64 20 73 65 63 75 72 65 2e 20 57 69 74 68 6f 75 74 20 69 74 2c 20 79 6f 75 20 63 61 6e 6e 6f 74 20 64 65 63 72 79 70 74 20 79 6f 75 72 20 66 69 6c 65 73 2e } 		$a_80_3 = {45 6e 63 72 79 70 74 69 6f 6e 20 63 6f 6d 70 6c 65 74 65 2e } 		$a_80_4 = {53 74 61 72 74 69 6e 67 20 65 6e 63 72 79 70 74 69 6f 6e 20 6f 6e } 		$a_80_5 = {4c 4f 43 4b 42 49 54 5f 53 49 47 4e 41 54 55 52 45 } 		$a_80_6 = {54 72 61 6e 73 66 65 72 46 69 6c 65 73 56 69 61 46 54 50 } 		$a_80_7 = {41 45 53 5f 42 4c 4f 43 4b 5f 53 49 5a 45 } 		$a_80_8 = {4b 45 59 5f 53 49 5a 45 } 		$a_80_9 = {46 54 50 20 54 72 61 6e 73 66 65 72 20 45 72 72 6f 72 3a } 		$a_80_10 = {53 54 4f 52 } 		$a_80_11 = {66 74 70 3a 2f 2f } 		$a_80_12 = {46 74 70 57 65 62 52 65 71 75 65 73 74 } 		$a_80_13 = {65 6e 63 72 79 70 74 69 6f 6e 5f 6d 65 73 73 61 67 65 2e 74 78 74 } 		$a_80_14 = {65 6d 61 69 6c 3a 20 68 61 63 6b 65 72 73 5f 6c 6f 63 6b 52 61 6e 73 6f 6d 40 70 72 6f 74 6f 6e 6d 61 69 6c 2e 63 6f 6d } 	condition:
		((#a_80_0  & 1)*1+(#a_80_1  & 1)*1+(#a_80_2  & 1)*1+(#a_80_3  & 1)*1+(#a_80_4  & 1)*1+(#a_80_5  & 1)*1+(#a_80_6  & 1)*1+(#a_80_7  & 1)*1+(#a_80_8  & 1)*1+(#a_80_9  & 1)*1+(#a_80_10  & 1)*1+(#a_80_11  & 1)*1+(#a_80_12  & 1)*1+(#a_80_13  & 1)*2+(#a_80_14  & 1)*5) >=7
 
}

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

0ce53b71-a455-4693-9fef-9260479d67df

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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

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 ]]

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

[[ currentRule.title ]]

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