31 lines
1,016 B
Text
31 lines
1,016 B
Text
rule MauiRansomware
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{
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meta:
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author= "Silas Cutler (Silas@Stairwell.com)"
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description = "Detection for Maui Ransomware"
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reference = "https://stairwell.com/wp-content/uploads/2022/07/Stairwell-Threat-Report-Maui-Ransomware.pdf"
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version = "0.1"
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strings:
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$ = "Unable to read public key info." wide
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$ = "it by <Godhead> using -maui option." wide
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$ = "Incompatible public key version." wide
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$ = "maui.key" wide
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$ = "maui.evd" wide
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$ = "Unable to encrypt private key" wide
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$ = "Unable to create evidence file" wide
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$ = "PROCESS_GOINGON[%d%% / %d%%]: %s" wide
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$ = "demigod.key" wide
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$ = "Usage: maui [-ptx] [PATH]" wide
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$ = "-p dir: Set Log Directory (Default: Current Directory)" wide
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$ = "-t n: Set Thread Count (Default: 1)" wide
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$ = "-x: Self Melt (Default: No)" wide
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// File header loading (x32-bit)
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$ = { 44 24 24 44 49 56 45 ?? 44 24 28 01 00 00 00 ?? 44 24 2C 10 00 00 00 }
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$ = { 44 4F 47 44 ?? ?? 04 01 00 00 00 }
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condition:
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3 of them or
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(
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uint32(filesize-8) == 0x00000001 and
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uint32(filesize-12) == 0x5055424B
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)
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}
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