368 lines
14 KiB
Text
368 lines
14 KiB
Text
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/*
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Yara Rule Set
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Author: Florian Roth
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Date: 2014-11-23
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Identifier: Regin
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Warning: Don't use this rule set without excluding the false positive hashes listed in
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the file falsepositive-hashes.txt
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*/
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/* REGIN ---------------------------------------------------------------------------------- */
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rule Regin_APT_KernelDriver_Generic_A {
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meta:
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description = "Generic rule for Regin APT kernel driver Malware - Symantec http://t.co/qu53359Cb2"
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author = "@Malwrsignatures - included in APT Scanner THOR"
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date = "23.11.14"
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hash1 = "187044596bc1328efa0ed636d8aa4a5c"
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hash2 = "06665b96e293b23acc80451abb413e50"
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hash3 = "d240f06e98c8d3e647cbf4d442d79475"
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id = "4cea1d45-b797-51b2-baa7-e66c8c0206ea"
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strings:
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$m0 = { 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 }
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$m1 = { 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 6d 6f 64 65 2e }
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$s0 = "atapi.sys" fullword wide
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$s1 = "disk.sys" fullword wide
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$s3 = "h.data" fullword ascii
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$s4 = "\\system32" ascii
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$s5 = "\\SystemRoot" ascii
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$s6 = "system" fullword ascii
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$s7 = "temp" fullword ascii
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$s8 = "windows" fullword ascii
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$x1 = "LRich6" fullword ascii
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$x2 = "KeServiceDescriptorTable" fullword ascii
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condition:
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uint16(0) == 0x5a4d and $m0 at 0 and $m1 and
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all of ($s*) and 1 of ($x*)
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}
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rule Regin_APT_KernelDriver_Generic_B {
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meta:
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description = "Generic rule for Regin APT kernel driver Malware - Symantec http://t.co/qu53359Cb2"
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author = "@Malwrsignatures - included in APT Scanner THOR"
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date = "23.11.14"
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hash1 = "ffb0b9b5b610191051a7bdf0806e1e47"
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hash2 = "bfbe8c3ee78750c3a520480700e440f8"
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hash3 = "b29ca4f22ae7b7b25f79c1d4a421139d"
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hash4 = "06665b96e293b23acc80451abb413e50"
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hash5 = "2c8b9d2885543d7ade3cae98225e263b"
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hash6 = "4b6b86c7fec1c574706cecedf44abded"
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hash7 = "187044596bc1328efa0ed636d8aa4a5c"
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hash8 = "d240f06e98c8d3e647cbf4d442d79475"
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hash9 = "6662c390b2bbbd291ec7987388fc75d7"
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hash10 = "1c024e599ac055312a4ab75b3950040a"
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hash11 = "ba7bb65634ce1e30c1e5415be3d1db1d"
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hash12 = "b505d65721bb2453d5039a389113b566"
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hash13 = "b269894f434657db2b15949641a67532"
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id = "14f31b2d-4753-54e8-891a-e28689ba57db"
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strings:
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$m0 = { 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 }
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$s1 = { 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 6d 6f 64 65 2e }
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$s2 = "H.data" fullword ascii nocase
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$s3 = "INIT" fullword ascii
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$s4 = "ntoskrnl.exe" fullword ascii
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$v1 = "\\system32" ascii
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$v2 = "\\SystemRoot" ascii
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$v3 = "KeServiceDescriptorTable" fullword ascii
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$w1 = "\\system32" ascii
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$w2 = "\\SystemRoot" ascii
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$w3 = "LRich6" fullword ascii
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$x1 = "_snprintf" ascii
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$x2 = "_except_handler3" ascii
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$y1 = "mbstowcs" fullword ascii
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$y2 = "wcstombs" fullword ascii
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$y3 = "KeGetCurrentIrql" fullword ascii
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$z1 = "wcscpy" fullword ascii
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$z2 = "ZwCreateFile" fullword ascii
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$z3 = "ZwQueryInformationFile" fullword ascii
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$z4 = "wcslen" fullword ascii
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$z5 = "atoi" fullword ascii
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condition:
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uint16(0) == 0x5a4d and
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$m0 at 0 and all of ($s*) and
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( all of ($v*) or all of ($w*) or all of ($x*) or all of ($y*) or all of ($z*) )
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and filesize < 20KB
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}
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rule Regin_APT_KernelDriver_Generic_C {
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meta:
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description = "Generic rule for Regin APT kernel driver Malware - Symantec http://t.co/qu53359Cb2"
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author = "@Malwrsignatures - included in APT Scanner THOR"
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date = "23.11.14"
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hash1 = "e0895336617e0b45b312383814ec6783556d7635"
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hash2 = "732298fa025ed48179a3a2555b45be96f7079712"
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id = "2006b3f0-abd1-5274-8b18-75368671e062"
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strings:
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$m0 = { 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 b8 }
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$s0 = "KeGetCurrentIrql" fullword ascii
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$s1 = "5.2.3790.0 (srv03_rtm.030324-2048)" fullword wide
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$s2 = "usbclass" fullword wide
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$x1 = "PADDINGXXPADDINGPADDINGXXPADDINGPADDINGXXPADDINGPADDINGXXPADDINGPADDINGXXPADDING" ascii
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$x2 = "Universal Serial Bus Class Driver" fullword wide
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$x3 = "5.2.3790.0" fullword wide
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$y1 = "LSA Shell" fullword wide
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$y2 = "0Richw" fullword ascii
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condition:
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uint16(0) == 0x5a4d and
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$m0 at 0 and all of ($s*) and
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( all of ($x*) or all of ($y*) )
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and filesize < 20KB
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}
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/* Update 27.11.14 */
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rule Regin_sig_svcsstat {
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meta:
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description = "Detects svcstat from Regin report - file svcsstat.exe_sample"
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author = "@MalwrSignatures"
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date = "26.11.14"
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hash = "5164edc1d54f10b7cb00a266a1b52c623ab005e2"
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id = "0cb493d7-c7f1-54c4-9805-d9894bf399da"
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strings:
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$s0 = "Service Control Manager" fullword ascii
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$s1 = "_vsnwprintf" ascii
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$s2 = "Root Agency" fullword ascii
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$s3 = "Root Agency0" fullword ascii
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$s4 = "StartServiceCtrlDispatcherA" fullword ascii
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$s5 = "\\\\?\\UNC" fullword wide
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$s6 = "%ls%ls" fullword wide
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condition:
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all of them and filesize < 15KB and filesize > 10KB
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}
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rule Regin_Sample_1 {
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meta:
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description = "Semiautomatically generated YARA rule - file-3665415_sys"
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author = "Florian Roth"
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date = "25.11.14"
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score = 70
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hash = "773d7fab06807b5b1bc2d74fa80343e83593caf2"
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id = "13478652-155f-52ba-af16-53f27c92e052"
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strings:
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$s0 = "Getting PortName/Identifier failed - %x" fullword ascii
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$s1 = "SerialAddDevice - error creating new devobj [%#08lx]" fullword ascii
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$s2 = "External Naming Failed - Status %x" fullword ascii
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$s3 = "------- Same multiport - different interrupts" fullword ascii
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$s4 = "%x occurred prior to the wait - starting the" fullword ascii
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$s5 = "'user registry info - userPortIndex: %d" fullword ascii
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$s6 = "Could not report legacy device - %x" fullword ascii
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$s7 = "entering SerialGetPortInfo" fullword ascii
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$s8 = "'user registry info - userPort: %x" fullword ascii
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$s9 = "IoOpenDeviceRegistryKey failed - %x " fullword ascii
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$s10 = "Kernel debugger is using port at address %X" fullword ascii
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$s12 = "Release - freeing multi context" fullword ascii
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$s13 = "Serial driver will not load port" fullword ascii
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$s14 = "'user registry info - userAddressSpace: %d" fullword ascii
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$s15 = "SerialAddDevice: Enumeration request, returning NO_MORE_ENTRIES" fullword ascii
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$s20 = "'user registry info - userIndexed: %d" fullword ascii
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$fp1 = "Enter SerialBuildResourceList" ascii fullword
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condition:
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all of them and filesize < 110KB and filesize > 80KB and not $fp1
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}
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rule Regin_Sample_2 {
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meta:
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description = "Auto-generated rule - file hiddenmod_hookdisk_and_kdbg_8949d000.bin"
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author = "@MalwrSignatures"
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date = "26.11.14"
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hash = "a7b285d4b896b66fce0ebfcd15db53b3a74a0400"
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id = "1091a598-e964-5f67-9267-531d66831bee"
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strings:
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$s0 = "\\SYSTEMROOT\\system32\\lsass.exe" wide
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$s1 = "atapi.sys" fullword wide
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$s2 = "disk.sys" fullword wide
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$s3 = "IoGetRelatedDeviceObject" fullword ascii
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$s4 = "HAL.dll" fullword ascii
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$s5 = "\\Registry\\Machine\\System\\CurrentControlSet\\Services" ascii
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$s6 = "PsGetCurrentProcessId" fullword ascii
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$s7 = "KeGetCurrentIrql" fullword ascii
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$s8 = "\\REGISTRY\\Machine\\System\\CurrentControlSet\\Control\\Session Manager" wide
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$s9 = "KeSetImportanceDpc" fullword ascii
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$s10 = "KeQueryPerformanceCounter" fullword ascii
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$s14 = "KeInitializeEvent" fullword ascii
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$s15 = "KeDelayExecutionThread" fullword ascii
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$s16 = "KeInitializeTimerEx" fullword ascii
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$s18 = "PsLookupProcessByProcessId" fullword ascii
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$s19 = "ExReleaseFastMutexUnsafe" fullword ascii
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$s20 = "ExAcquireFastMutexUnsafe" fullword ascii
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condition:
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all of them and filesize < 40KB and filesize > 30KB
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}
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rule Regin_Sample_3 {
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meta:
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description = "Detects Regin Backdoor sample fe1419e9dde6d479bd7cda27edd39fafdab2668d498931931a2769b370727129"
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author = "@Malwrsignatures"
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date = "27.11.14"
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hash = "fe1419e9dde6d479bd7cda27edd39fafdab2668d498931931a2769b370727129"
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id = "eefc174f-4b17-5c90-8478-3eaaf80e9a78"
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strings:
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$s0 = "Service Pack x" fullword wide
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$s1 = "\\REGISTRY\\MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion" wide
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$s2 = "\\REGISTRY\\Machine\\Software\\Microsoft\\Windows NT\\CurrentVersion\\HotFix" wide
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$s3 = "mntoskrnl.exe" fullword wide
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$s4 = "\\REGISTRY\\Machine\\System\\CurrentControlSet\\Control\\Session Manager\\Memory Management" wide
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$s5 = "Memory location: 0x%p, size 0x%08x" wide fullword
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$s6 = "Service Pack" fullword wide
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$s7 = ".sys" fullword wide
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$s8 = ".dll" fullword wide
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$s10 = "\\REGISTRY\\Machine\\Software\\Microsoft\\Updates" wide
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$s11 = "IoGetRelatedDeviceObject" fullword ascii
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$s12 = "VMEM.sys" fullword ascii
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$s13 = "RtlGetVersion" fullword wide
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$s14 = "ntkrnlpa.exe" fullword ascii
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condition:
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uint32(0) == 0xfedcbafe and all of ($s*) and filesize > 160KB and filesize < 200KB
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}
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rule Regin_Sample_Set_2 {
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meta:
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description = "Auto-generated rule - file SHF-000052 and ndisips.sys"
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author = "@MalwrSignatures"
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date = "26.11.14"
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hash1 = "8487a961c8244004c9276979bb4b0c14392fc3b8"
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hash2 = "bcf3461d67b39a427c83f9e39b9833cfec977c61"
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id = "0b21091d-413e-54dd-83d1-5d824fb013f2"
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strings:
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$s0 = "HAL.dll" fullword ascii
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$s1 = "IoGetDeviceObjectPointer" fullword ascii
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$s2 = "MaximumPortsServiced" fullword wide
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$s3 = "KeGetCurrentIrql" fullword ascii
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$s4 = "ntkrnlpa.exe" fullword ascii
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$s5 = "\\REGISTRY\\Machine\\System\\CurrentControlSet\\Control\\Session Manager" wide
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$s6 = "ConnectMultiplePorts" fullword wide
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$s7 = "\\SYSTEMROOT" wide
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$s8 = "IoWriteErrorLogEntry" fullword ascii
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$s9 = "KeQueryPerformanceCounter" fullword ascii
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$s10 = "KeServiceDescriptorTable" fullword ascii
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$s11 = "KeRemoveEntryDeviceQueue" fullword ascii
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$s12 = "SeSinglePrivilegeCheck" fullword ascii
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$s13 = "KeInitializeEvent" fullword ascii
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$s14 = "IoBuildDeviceIoControlRequest" fullword ascii
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$s15 = "KeRemoveDeviceQueue" fullword ascii
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$s16 = "IofCompleteRequest" fullword ascii
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$s17 = "KeInitializeSpinLock" fullword ascii
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$s18 = "MmIsNonPagedSystemAddressValid" fullword ascii
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$s19 = "IoCreateDevice" fullword ascii
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$s20 = "KefReleaseSpinLockFromDpcLevel" fullword ascii
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condition:
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filesize < 40KB and filesize > 30KB and all of them
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}
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rule Regin_Sample_Set_1 {
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meta:
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description = "Detects Regin Backdoor sample"
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author = "@MalwrSignatures"
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date = "27.11.14"
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modified = "2023-01-06"
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hash1 = "4139149552b0322f2c5c993abccc0f0d1b38db4476189a9f9901ac0d57a656be"
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hash2 = "e420d0cf7a7983f78f5a15e6cb460e93c7603683ae6c41b27bf7f2fa34b2d935"
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id = "b0f24a0b-10e7-5549-a300-516df8644cb0"
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strings:
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$hd = { fe ba dc fe }
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$s0 = "d%ls%ls" fullword wide
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$s1 = "\\\\?\\UNC" fullword wide
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$s2 = "Software\\Microsoft\\Windows\\CurrentVersion" fullword wide
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$s4 = "SYSTEM\\CurrentControlSet\\Control\\Class\\{4D36E972-E325-11CE-BFC1-08002BE10318}" fullword wide
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$s5 = "System\\CurrentControlSet\\Services\\Tcpip\\Linkage" wide fullword
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$s6 = "\\\\.\\Global\\%s" fullword wide
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$s7 = "temp" fullword wide
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$s8 = "\\\\.\\%s" fullword wide
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$s9 = "Memory location: 0x%p, size 0x%08x" fullword wide
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$s10 = "sscanf" fullword ascii
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$s11 = "disp.dll" fullword ascii
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$s12 = "%x:%x:%x:%x:%x:%x:%x:%x%c" fullword ascii
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$s13 = "%d.%d.%d.%d%c" fullword ascii
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$s14 = "imagehlp.dll" fullword ascii
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$s15 = "%hd %d" fullword ascii
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condition:
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|
|
( $hd at 0 ) and all of ($s*) and filesize < 450KB and filesize > 360KB
|
||
|
|
}
|
||
|
|
|
||
|
|
rule apt_regin_legspin {
|
||
|
|
meta:
|
||
|
|
copyright = "Kaspersky Lab"
|
||
|
|
description = "Rule to detect Regin's Legspin module"
|
||
|
|
version = "1.0"
|
||
|
|
last_modified = "2015-01-22"
|
||
|
|
modified = "2023-01-27"
|
||
|
|
reference = "https://securelist.com/blog/research/68438/an-analysis-of-regins-hopscotch-and-legspin/"
|
||
|
|
md5 = "29105f46e4d33f66fee346cfd099d1cc"
|
||
|
|
id = "2abd3605-d9bf-53f0-8521-ac8dc18d9fce"
|
||
|
|
strings:
|
||
|
|
$a1="sharepw"
|
||
|
|
$a2="reglist"
|
||
|
|
$a3="logdump"
|
||
|
|
$a4="Name:" wide
|
||
|
|
$a5="Phys Avail:"
|
||
|
|
$a6="cmd.exe" wide
|
||
|
|
$a7="ping.exe" wide
|
||
|
|
$a8="millisecs"
|
||
|
|
condition:
|
||
|
|
uint16(0) == 0x5A4D and all of ($a*)
|
||
|
|
}
|
||
|
|
|
||
|
|
rule apt_regin_hopscotch {
|
||
|
|
meta:
|
||
|
|
copyright = "Kaspersky Lab"
|
||
|
|
description = "Rule to detect Regin's Hopscotch module"
|
||
|
|
version = "1.0"
|
||
|
|
last_modified = "2015-01-22"
|
||
|
|
modified = "2023-01-27"
|
||
|
|
reference = "https://securelist.com/blog/research/68438/an-analysis-of-regins-hopscotch-and-legspin/"
|
||
|
|
md5 = "6c34031d7a5fc2b091b623981a8ae61c"
|
||
|
|
id = "907042ba-8e64-5ca7-9a83-70c28af1ab99"
|
||
|
|
strings:
|
||
|
|
$a1="AuthenticateNetUseIpc"
|
||
|
|
$a2="Failed to authenticate to"
|
||
|
|
$a3="Failed to disconnect from"
|
||
|
|
$a4="%S\\ipc$" wide
|
||
|
|
$a5="Not deleting..."
|
||
|
|
$a6="CopyServiceToRemoteMachine"
|
||
|
|
$a7="DH Exchange failed"
|
||
|
|
$a8="ConnectToNamedPipes"
|
||
|
|
condition:
|
||
|
|
uint16(0) == 0x5A4D and all of ($a*)
|
||
|
|
}
|
||
|
|
|
||
|
|
rule Regin_Related_Malware {
|
||
|
|
meta:
|
||
|
|
description = "Malware Sample - maybe Regin related"
|
||
|
|
license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
|
||
|
|
author = "Florian Roth (Nextron Systems)"
|
||
|
|
score = 70
|
||
|
|
reference = "VT Analysis"
|
||
|
|
date = "2015-06-03"
|
||
|
|
hash = "76c355bfeb859a347e38da89e3d30a6ff1f94229"
|
||
|
|
id = "9377dd52-244f-5289-a2a3-88b6377b2dd2"
|
||
|
|
strings:
|
||
|
|
$s1 = "%c%s%c -p %d -e %d -pv -c \"~~[%x] s; .%c%c%s %s /u %s_%d.dmp; q\"" fullword wide /* score: '22.015' */
|
||
|
|
|
||
|
|
$s0 = "Software\\Microsoft\\Windows NT\\CurrentVersion\\HotFix" fullword wide /* PEStudio Blacklist: os */ /* score: '26.02' */
|
||
|
|
$s2 = "%x:%x:%x:%x:%x:%x:%x:%x%c" fullword ascii /* score: '13.01' */
|
||
|
|
$s3 = "disp.dll" fullword ascii /* score: '11.01' */
|
||
|
|
$s4 = "msvcrtd.dll" fullword ascii /* score: '11.005' */
|
||
|
|
$s5 = "%d.%d.%d.%d%c" fullword ascii /* score: '11.0' */
|
||
|
|
$s6 = "%ls_%08x" fullword wide /* score: '8.0' */
|
||
|
|
$s8 = "d%ls%ls" fullword wide /* score: '7.005' */
|
||
|
|
$s9 = "Memory location: 0x%p, size 0x%08x" fullword wide /* score: '6.025' */
|
||
|
|
condition:
|
||
|
|
$s1 or 3 of ($s*)
|
||
|
|
}
|