188 lines
7.7 KiB
Text
188 lines
7.7 KiB
Text
/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2016-07-09
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Identifier: Stuxnet
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*/
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/* Rule Set ----------------------------------------------------------------- */
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rule StuxNet_Malware_1 {
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meta:
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description = "Stuxnet Sample - file malware.exe"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "9c891edb5da763398969b6aaa86a5d46971bd28a455b20c2067cb512c9f9a0f8"
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id = "1f475dc3-ebb3-508f-b696-3d9ea270b13d"
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strings:
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// 0x10001778 8b 45 08 mov eax, dword ptr [ebp + 8]
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// 0x1000177b 35 dd 79 19 ae xor eax, 0xae1979dd
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// 0x10001780 33 c9 xor ecx, ecx
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// 0x10001782 8b 55 08 mov edx, dword ptr [ebp + 8]
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// 0x10001785 89 02 mov dword ptr [edx], eax
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// 0x10001787 89 ?? ?? mov dword ptr [edx + 4], ecx
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$op1 = { 8b 45 08 35 dd 79 19 ae 33 c9 8b 55 08 89 02 89 }
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// 0x10002045 74 36 je 0x1000207d
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// 0x10002047 8b 7f 08 mov edi, dword ptr [edi + 8]
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// 0x1000204a 83 ff 00 cmp edi, 0
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// 0x1000204d 74 2e je 0x1000207d
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// 0x1000204f 0f b7 1f movzx ebx, word ptr [edi]
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// 0x10002052 8b 7f 04 mov edi, dword ptr [edi + 4]
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$op2 = { 74 36 8b 7f 08 83 ff 00 74 2e 0f b7 1f 8b 7f 04 }
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// 0x100020cf 74 70 je 0x10002141
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// 0x100020d1 81 78 05 8d 54 24 04 cmp dword ptr [eax + 5], 0x424548d
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// 0x100020d8 75 1b jne 0x100020f5
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// 0x100020da 81 78 08 04 cd ?? ?? cmp dword ptr [eax + 8], 0xc22ecd04
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$op3 = { 74 70 81 78 05 8d 54 24 04 75 1b 81 78 08 04 cd }
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condition:
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all of them
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}
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rule Stuxnet_Malware_2 {
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meta:
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description = "Stuxnet Sample"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "63e6b8136058d7a06dfff4034b4ab17a261cdf398e63868a601f77ddd1b32802"
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id = "2865353c-44c5-5280-878b-daadcef017b8"
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strings:
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$s1 = "\\SystemRoot\\System32\\hal.dll" wide
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$s2 = "http://www.jmicron.co.tw0" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 70KB and all of them
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}
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rule StuxNet_dll {
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meta:
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description = "Stuxnet Sample - file dll.dll"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "9e392277f62206098cf794ddebafd2817483cfd57ec03c2e05e7c3c81e72f562"
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id = "92d812a6-2622-56e4-96c5-eb65ab7055b9"
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strings:
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$s1 = "SUCKM3 FROM EXPLORER.EXE MOTH4FUCKA #@!" fullword ascii
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condition:
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uint16(0) == 0x5a4d and filesize < 100KB and $s1
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}
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rule Stuxnet_Shortcut_to {
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meta:
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description = "Stuxnet Sample - file Copy of Shortcut to.lnk"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "801e3b6d84862163a735502f93b9663be53ccbdd7f12b0707336fecba3a829a2"
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id = "582ab12b-808e-5d5c-ba36-3bb987c4c552"
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strings:
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$x1 = "\\\\.\\STORAGE#Volume#_??_USBSTOR#Disk&Ven_Kingston&Prod_DataTraveler_2.0&Rev_PMAP#5B6B098B97BE&0#{53f56307-b6bf-11d0-94f2-00a0c" wide
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condition:
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uint16(0) == 0x004c and filesize < 10KB and $x1
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}
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rule Stuxnet_Malware_3 {
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meta:
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description = "Stuxnet Sample - file ~WTR4141.tmp"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "6bcf88251c876ef00b2f32cf97456a3e306c2a263d487b0a50216c6e3cc07c6a"
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hash2 = "70f8789b03e38d07584f57581363afa848dd5c3a197f2483c6dfa4f3e7f78b9b"
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id = "1b0b301a-bf29-5080-a7d6-4d5f389bdf50"
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strings:
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$x1 = "SHELL32.DLL.ASLR." fullword wide
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$s1 = "~WTR4141.tmp" fullword wide
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$s2 = "~WTR4132.tmp" fullword wide
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$s3 = "totalcmd.exe" fullword wide
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$s4 = "wincmd.exe" fullword wide
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$s5 = "http://www.realtek.com0" fullword ascii
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$s6 = "{%08x-%08x-%08x-%08x}" fullword wide
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condition:
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( uint16(0) == 0x5a4d and filesize < 150KB and ( $x1 or 3 of ($s*) ) ) or ( 5 of them )
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}
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rule Stuxnet_Malware_4 {
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meta:
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description = "Stuxnet Sample"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "0d8c2bcb575378f6a88d17b5f6ce70e794a264cdc8556c8e812f0b5f9c709198"
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hash2 = "1635ec04f069ccc8331d01fdf31132a4bc8f6fd3830ac94739df95ee093c555c"
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id = "fd3fa395-15f1-5a11-9740-03b897e4620b"
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strings:
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$x1 = "\\objfre_w2k_x86\\i386\\guava.pdb" ascii
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$x2 = "MRxCls.sys" fullword wide
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$x3 = "MRXNET.Sys" fullword wide
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condition:
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( uint16(0) == 0x5a4d and filesize < 80KB and 1 of them ) or ( all of them )
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}
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rule Stuxnet_maindll_decrypted_unpacked {
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meta:
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description = "Stuxnet Sample - file maindll.decrypted.unpacked.dll_"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "4c3d7b38339d7b8adf73eaf85f0eb9fab4420585c6ab6950ebd360428af11712"
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id = "7009a41c-0588-5392-ae1c-045e0a5ee56b"
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strings:
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$s1 = "%SystemRoot%\\system32\\Drivers\\mrxsmb.sys;%SystemRoot%\\system32\\Drivers\\*.sys" fullword wide
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$s2 = "<Actions Context=\"%s\"><Exec><Command>%s</Command><Arguments>%s,#%u</Arguments></Exec></Actions>" fullword wide
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$s3 = "%SystemRoot%\\inf\\oem7A.PNF" fullword wide
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$s4 = "%SystemRoot%\\inf\\mdmcpq3.PNF" fullword wide
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$s5 = "%SystemRoot%\\inf\\oem6C.PNF" fullword wide
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$s6 = "@abf varbinary(4096) EXEC @hr = sp_OACreate 'ADODB.Stream', @aods OUT IF @hr <> 0 GOTO endq EXEC @hr = sp_OASetProperty @" wide
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$s7 = "STORAGE#Volume#1&19f7e59c&0&" fullword wide
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$s8 = "view MCPVREADVARPERCON as select VARIABLEID,VARIABLETYPEID,FORMATFITTING,SCALEID,VARIABLENAME,ADDRESSPARAMETER,PROTOKOLL,MAXLIMI" ascii
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condition:
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6 of them
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}
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rule Stuxnet_s7hkimdb {
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meta:
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description = "Stuxnet Sample - file s7hkimdb.dll"
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license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
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author = "Florian Roth (Nextron Systems)"
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reference = "Internal Research"
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date = "2016-07-09"
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hash1 = "4071ec265a44d1f0d42ff92b2fa0b30aafa7f6bb2160ed1d0d5372d70ac654bd"
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id = "e4cb277f-5eee-5405-9d48-d06657392323"
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strings:
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$x1 = "S7HKIMDX.DLL" fullword wide
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/* Opcodes by Binar.ly */
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// 0x10001778 8b 45 08 mov eax, dword ptr [ebp + 8]
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// 0x1000177b 35 dd 79 19 ae xor eax, 0xae1979dd
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// 0x10001780 33 c9 xor ecx, ecx
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// 0x10001782 8b 55 08 mov edx, dword ptr [ebp + 8]
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// 0x10001785 89 02 mov dword ptr [edx], eax
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// 0x10001787 89 ?? ?? mov dword ptr [edx + 4], ecx
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$op1 = { 8b 45 08 35 dd 79 19 ae 33 c9 8b 55 08 89 02 89 }
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// 0x10002045 74 36 je 0x1000207d
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// 0x10002047 8b 7f 08 mov edi, dword ptr [edi + 8]
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// 0x1000204a 83 ff 00 cmp edi, 0
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// 0x1000204d 74 2e je 0x1000207d
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// 0x1000204f 0f b7 1f movzx ebx, word ptr [edi]
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// 0x10002052 8b 7f 04 mov edi, dword ptr [edi + 4]
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$op2 = { 74 36 8b 7f 08 83 ff 00 74 2e 0f b7 1f 8b 7f 04 }
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// 0x100020cf 74 70 je 0x10002141
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// 0x100020d1 81 78 05 8d 54 24 04 cmp dword ptr [eax + 5], 0x424548d
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// 0x100020d8 75 1b jne 0x100020f5
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// 0x100020da 81 78 08 04 cd ?? ?? cmp dword ptr [eax + 8], 0xc22ecd04
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$op3 = { 74 70 81 78 05 8d 54 24 04 75 1b 81 78 08 04 cd }
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condition:
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( uint16(0) == 0x5a4d and filesize < 40KB and $x1 and all of ($op*) )
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}
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