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Copy pathMethodology_Mutation_FLIPFLOP_Sample_Rules.yar
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Methodology_Mutation_FLIPFLOP_Sample_Rules.yar
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rule Methodology_Mutation_FLIPFLOP_Windows_Registry_Functions {
meta:
author = "Stairwell"
description = "Searching for PE files with mutations of odd, rare, or interesting string equities. This string mutation takes its inspiration from APT29/CozyBear malware family called FLIPFLOP because it reads in a subfile but reverses every two bytes."
hash = "ee42ddacbd202008bcc1312e548e1d9ac670dd3d86c999606a3a01d464a2a330"
strings:
$GetPrivateProfileInt_flipflop = "eGPtiravetrPfoliIetn" nocase
$GetPrivateProfileSection_flipflop = "eGPtiravetrPfoliSeceitno" nocase
$GetPrivateProfileSectionNames_flipflop = "eGPtiravetrPfoliSeceitnoaNems" nocase
$GetPrivateProfileString_flipflop = "eGPtiravetrPfoliSertnig" nocase
$GetPrivateProfileStruct_flipflop = "eGPtiravetrPfoliSertcut" nocase
$GetProfileInt_flipflop = "eGPtorifelnIt" nocase
$GetProfileSection_flipflop = "eGPtorifeleStcoin" nocase
$GetProfileString_flipflop = "eGPtorifeltSirgn" nocase
$RegCloseKey_flipflop = "eRCgoleseKy" nocase
$RegConnectRegistry_flipflop = "eRCgnoentceRigtsyr" nocase
$RegCopyTree_flipflop = "eRCgpoTyere" nocase
$RegCreateKey_flipflop = "eRCgertaKeye" nocase
$RegCreateKeyEx_flipflop = "eRCgertaKeyexE" nocase
$RegCreateKeyTransacted_flipflop = "eRCgertaKeyerTnaastcde" nocase
$RegDeleteKey_flipflop = "eRDgleteKeye" nocase
$RegDeleteKeyEx_flipflop = "eRDgleteKeyexE" nocase
$RegDeleteKeyTransacted_flipflop = "eRDgleteKeyerTnaastcde" nocase
$RegDeleteKeyValue_flipflop = "eRDgleteKeyeaVule" nocase
$RegDeleteTree_flipflop = "eRDgleteTeere" nocase
$RegDeleteValue_flipflop = "eRDgleteVelaeu" nocase
$RegDisablePredefinedCache_flipflop = "eRDgsibaelrPdefenideaChce" nocase
$RegDisablePredefinedCacheEx_flipflop = "eRDgsibaelrPdefenideaChcEex" nocase
$RegDisableReflectionKey_flipflop = "eRDgsibaeleRlfceitnoeKy" nocase
$RegEnableReflectionKey_flipflop = "eREganlbRefeeltcoiKnye" nocase
$RegEnumKey_flipflop = "eREgunKmye" nocase
$RegEnumKeyEx_flipflop = "eREgunKmyexE" nocase
$RegEnumValue_flipflop = "eREgunVmlaeu" nocase
$RegFlushKey_flipflop = "eRFgulhseKy" nocase
$RegGetValue_flipflop = "eRGgteaVule" nocase
$RegLoadAppKey_flipflop = "eRLgaoAdppeKy" nocase
$RegLoadKey_flipflop = "eRLgaoKdye" nocase
$RegLoadMUIString_flipflop = "eRLgaoMdIUtSirgn" nocase
$RegNotifyChangeKeyValue_flipflop = "eRNgtofiCyahgnKeyeaVule" nocase
$RegOpenCurrentUser_flipflop = "eROgepCnruertnsUre" nocase
$RegOpenKey_flipflop = "eROgepKnye" nocase
$RegOpenKeyEx_flipflop = "eROgepKnyexE" nocase
$RegOpenKeyTransacted_flipflop = "eROgepKnyerTnaastcde" nocase
$RegOpenUserClassesRoot_flipflop = "eROgepUnesCralssseoRto" nocase
$RegOverridePredefKey_flipflop = "eROgevrrdiPeeredKfye" nocase
$RegQueryInfoKey_flipflop = "eRQgeuyrnIofeKy" nocase
$RegQueryMultipleValues_flipflop = "eRQgeuyruMtlpielaVulse" nocase
$RegQueryReflectionKey_flipflop = "eRQgeuyreRlfceitnoeKy" nocase
$RegQueryValue_flipflop = "eRQgeuyraVule" nocase
$RegQueryValueEx_flipflop = "eRQgeuyraVulEex" nocase
$RegReplaceKey_flipflop = "eRRgpealeceKy" nocase
$RegRestoreKey_flipflop = "eRRgseotereKy" nocase
$RegSaveKey_flipflop = "eRSgvaKeye" nocase
$RegSaveKeyEx_flipflop = "eRSgvaKeyexE" nocase
$RegSetKeyValue_flipflop = "eRSgteeKVylaeu" nocase
$RegSetValue_flipflop = "eRSgteaVule" nocase
$RegSetValueEx_flipflop = "eRSgteaVulEex" nocase
$RegUnLoadKey_flipflop = "eRUgLnaoKdye" nocase
$WritePrivateProfileSection_flipflop = "rWtiPeiravetrPfoliSeceitno" nocase
$WritePrivateProfileString_flipflop = "rWtiPeiravetrPfoliSertnig" nocase
$WritePrivateProfileStruct_flipflop = "rWtiPeiravetrPfoliSertcut" nocase
$WriteProfileSection_flipflop = "rWtiPeorifeleStcoin" nocase
$WriteProfileString_flipflop = "rWtiPeorifeltSirgn" nocase
condition:
filesize < 5MB and uint16be(0) == 0x4d5a and 1 of them
}
rule Methodology_Mutation_FLIPFLOP_Common_PE_Strings {
meta:
author = "Stairwell"
description = "Searching for PE files with mutations of odd, rare, or interesting string equities. This string mutation takes its inspiration from APT29/CozyBear malware family called FLIPFLOP because it reads in a subfile but reverses every two bytes."
hash = "ee42ddacbd202008bcc1312e548e1d9ac670dd3d86c999606a3a01d464a2a330"
strings:
$a0_ThisProgramCannot = "hTsip orrgmac naon tebr nui nOD Somed" ascii nocase
$a1_ThisProgramCannot_Win32 = "hTsip orrgmam su tebr nuu dnreW ni23" ascii nocase
$a2_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 = "badcfehgjilknmporqtsvuxwzyBADCFEHGJILKNMPORQTSVUXWZY1032547698" ascii nocase
$a3_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 = "BADCFEHGJILKNMPORQTSVUXWZY1032547698" ascii nocase
$a4_alphabet_1 = "\"!$#&%('*),+.-0/21436587:9<;>=@?BADCFEHGJILKNMPORQTSVUXW" ascii nocase
$a5_KERNEL32_dll = "EKNRLE23d.ll" ascii nocase
$a6_msvcrt_dll = "smcvtrd.ll" ascii nocase
$a7_VCRUNTIME140_dll = "CVURTNMI1E04d.ll" ascii nocase
$a8_IsDebuggerPresent = "sIeDubggrerPsenet" ascii nocase
$a9_RaiseException = "aRsiEecxpeitno" ascii nocase
$a10_MultiByteToWideChar = "uMtlBityTeWodiCeahr" ascii nocase
$a11_WideCharToMultiByte = "iWedhCraoTuMtlBitye" ascii nocase
$a12_UnhandledExceptionFilter = "nUahdnelEdcxpeitnoiFtlre" ascii nocase
$a13_SetUnhandledExceptionFilter = "eSUthnnalddexEectpoiFnlietr" ascii nocase
$a14_GetCurrentProcess = "eGCtruertnrPcoses" ascii nocase
$a15_TerminateProcess = "eTmrnitaPeorecss" ascii nocase
$a16_IsProcessorFeaturePresent = "sIrPcoseosFraeuterrPsenet" ascii nocase
$a17_QueryPerformanceCounter = "uQrePyreofmrnaecoCnuetr" ascii nocase
$a18_GetCurrentProcessId = "eGCtruertnrPcoseIsd" ascii nocase
$a19_GetSystemTimeAsFileTime = "eGStsyetTmmiAeFsliTemie" ascii nocase
$a20_InitializeSListHead = "nItiaiilezLSsiHtaed" ascii nocase
$a21_GetStartupInfoW = "eGStattrpunIofW" ascii nocase
$a22_GetModuleHandleW = "eGMtdoluHenaldWe" ascii nocase
$a23_GetLastError = "eGLtsaEtrrro" ascii nocase
$a24_HeapAlloc = "eHpalAolc" ascii nocase
$a25_HeapFree = "eHparFee" ascii nocase
$a26_GetProcessHeap = "eGPtorecsseHpa" ascii nocase
$a27_GetCurrentProcessId = "eGCtruertnrPcoseIsd" ascii nocase
$a28_GetCurrentThreadId = "eGCtruertnhTerdadI" ascii nocase
$a29_GetSystemTimeAsFileTime = "eGStsyetTmmiAeFsliTemie" ascii nocase
$a30_VirtualQuery = "iVtrauQleuyr" ascii nocase
$a31_FreeLibrary = "rFeeiLrbray" ascii nocase
$a32_GetProcAddress = "eGPtorAcdderss" ascii nocase
$a33_xml_ver = "mx levsroi=n1'0. 'neocidgn'=TU-F'8s atdnlano=ey'se'" ascii nocase
$a34_xml_ver_manifest = "a<ssmelb ymxnl=su'nrs:hcmesam-ciorostfc-moa:msv.'1m nafiseVtreisno'=.1'0>" ascii nocase
$a35_xml_trust_info = "t<urtsnIofx lmsn\"=ru:ncseham-simrcsofo-toc:msa.m3v>\"" ascii nocase
$a36_security = "s<ceruti>y" ascii nocase
$a37_requestedPrivileges = "r<qeeutsderPviligese>" ascii nocase
$a38_requestedExecutionLevel = "r<qeeutsdexEcetuoiLnvelel vele'=sanIovek'ru Aiccse=sf'laes '>/" ascii nocase
$a39_requestedPrivileges = "/<eruqseetPdiriveleg>s" ascii nocase
$a40_ssecurity = "/<esuciryt>" ascii nocase
$a41_trustInfo = "/<rtsuItfn>o" ascii nocase
$a42_assembly = "/<saesbmyl>" ascii nocase
condition:
filesize < 15MB and uint16be(0) == 0x4d5a and 1 of them
}
rule Methodology_Mutation_FLIPFLOP_Windows_Pipe_Functions {
meta:
author = "Stairwell"
description = "Searching for PE files with mutations of odd, rare, or interesting string equities. This string mutation takes its inspiration from APT29/CozyBear malware family called FLIPFLOP because it reads in a subfile but reverses every two bytes."
hash = "ee42ddacbd202008bcc1312e548e1d9ac670dd3d86c999606a3a01d464a2a330"
strings:
$CallNamedPipe_flipflop = "aCllaNemPdpie" nocase
$ConnectNamedPipe_flipflop = "oCnnceNtmadeiPep" nocase
$CreateNamedPipe_flipflop = "rCaeetaNemPdpie" nocase
$CreatePipe_flipflop = "rCaeetiPep" nocase
$DisconnectNamedPipe_flipflop = "iDcsnoentcaNemPdpie" nocase
$GetNamedPipeClientComputerName_flipflop = "eGNtmadeiPeplCeitnoCpmtureaNem" nocase
$GetNamedPipeClientProcessId_flipflop = "eGNtmadeiPeplCeitnrPcoseIsd" nocase
$GetNamedPipeClientSessionId_flipflop = "eGNtmadeiPeplCeitneSssoiInd" nocase
$GetNamedPipeHandleState_flipflop = "eGNtmadeiPepaHdneltStae" nocase
$GetNamedPipeInfo_flipflop = "eGNtmadeiPepnIof" nocase
$GetNamedPipeServerProcessId_flipflop = "eGNtmadeiPepeSvrrerPcoseIsd" nocase
$GetNamedPipeServerSessionId_flipflop = "eGNtmadeiPepeSvrreeSssoiInd" nocase
$PeekNamedPipe_flipflop = "ePkeaNemPdpie" nocase
$SetNamedPipeHandleState_flipflop = "eSNtmadeiPepaHdneltStae" nocase
$TransactNamedPipe_flipflop = "rTnaastcaNemPdpie" nocase
$WaitNamedPipe_flipflop = "aWtiaNemPdpie" nocase
condition:
filesize < 15MB and uint16be(0) == 0x4d5a and 1 of them
}
rule Methodology_Mutation_FLIPFLOP_Windows_Wininet_Functions {
meta:
author = "Stairwell"
description = "Searching for PE files with mutations of odd, rare, or interesting string equities. This string mutation takes its inspiration from APT29/CozyBear malware family called FLIPFLOP because it reads in a subfile but reverses every two bytes."
hash = "ee42ddacbd202008bcc1312e548e1d9ac670dd3d86c999606a3a01d464a2a330"
strings:
$a0_CleanupCredentialCache = "lCaeunCperedtnaiClcaeh" ascii nocase
$a1_CommitUrlCacheEntryW = "oCmmtirUClcaehnErtWy" ascii nocase
$a2_CreateMD5SSOHash = "rCaeetDMS5OSaHhs" ascii nocase
$a3_CreateUrlCacheContainer = "rCaeetrUClcaehoCtniaenr" ascii nocase
$a4_CreateUrlCacheEntry = "rCaeetrUClcaehnErty" ascii nocase
$a5_CreateUrlCacheGroup = "rCaeetrUClcaehrGuop" ascii nocase
$a6_DeleteUrlCacheEntry = "eDeletrUClcaehnErty" ascii nocase
$a7_DeleteUrlCacheGroup = "eDeletrUClcaehrGuop" ascii nocase
$a8_DetectAutoProxyUrl = "eDettcuAotrPxoUylr" ascii nocase
$a9_FindCloseUrlCache = "iFdnlCsoUelraChce" ascii nocase
$a10_FindFirstUrlCacheEntry = "iFdniFsrUtlraChcEetnyr" ascii nocase
$a11_FindFirstUrlCacheEntryEx = "iFdniFsrUtlraChcEetnyrxE" ascii nocase
$a12_FindFirstUrlCacheGroup = "iFdniFsrUtlraChcGeorpu" ascii nocase
$a13_FindNextUrlCacheEntry = "iFdneNtxrUClcaehnErty" ascii nocase
$a14_FindNextUrlCacheEntryEx = "iFdneNtxrUClcaehnErtEyx" ascii nocase
$a15_FindNextUrlCacheGroup = "iFdneNtxrUClcaehrGuop" ascii nocase
$a16_FtpCommandW = "tFCpmoamdnW" ascii nocase
$a17_FtpCreateDirectory = "tFCpertaDericeotyr" ascii nocase
$a18_FtpDeleteFile = "tFDpleteFelie" ascii nocase
$a19_FtpFindFirstFile = "tFFpniFdritsiFel" ascii nocase
$a20_FtpGetCurrentDirectory = "tFGpteuCrrneDtriceotyr" ascii nocase
$a21_FtpGetFile = "tFGpteiFel" ascii nocase
$a22_FtpGetFileSize = "tFGpteiFeliSez" ascii nocase
$a23_FtpOpenFile = "tFOpepFnlie" ascii nocase
$a24_FtpPutFile = "tFPptuiFel" ascii nocase
$a25_FtpRemoveDirectory = "tFRpmevoDericeotyr" ascii nocase
$a26_FtpRenameFile = "tFRpnemaFelie" ascii nocase
$a27_FtpSetCurrentDirectory = "tFSpteuCrrneDtriceotyr" ascii nocase
$a28_GetUrlCacheConfigInfoW = "eGUtlraChcCenoifIgfnWo" ascii nocase
$a29_GetUrlCacheEntryInfo = "eGUtlraChcEetnyrnIof" ascii nocase
$a30_GetUrlCacheEntryInfoEx = "eGUtlraChcEetnyrnIofxE" ascii nocase
$a31_GetUrlCacheGroupAttribute = "eGUtlraChcGeorputArtbitue" ascii nocase
$a32_GopherAttributeEnumerator = "oGhpretArtbituEeunemarotr" ascii nocase
$a33_GopherCreateLocator = "oGhprerCaeetoLacotr" ascii nocase
$a34_GopherFindFirstFile = "oGhpreiFdniFsrFtlie" ascii nocase
$a35_GopherGetAttribute = "oGhpreeGAtttirubet" ascii nocase
$a36_GopherGetLocatorType = "oGhpreeGLtcotaroyTep" ascii nocase
$a37_GopherOpenFile = "oGhprepOneiFel" ascii nocase
$a38_HttpAddRequestHeaders = "tHptdARdqeeutseHdares" ascii nocase
$a39_HttpEndRequest = "tHptnERdqeeuts" ascii nocase
$a40_HttpOpenRequest = "tHptpOneeRuqset" ascii nocase
$a41_HttpQueryInfo = "tHptuQreIyfno" ascii nocase
$a42_HttpSendRequest = "tHpteSdneRuqset" ascii nocase
$a43_HttpSendRequestEx = "tHpteSdneRuqseEtx" ascii nocase
$a44_InternetAttemptConnect = "nIetnrtetAetpmCtnoentc" ascii nocase
$a45_InternetAutodial = "nIetnrteuAotidla" ascii nocase
$a46_InternetAutodialHangup = "nIetnrteuAotidlaaHgnpu" ascii nocase
$a47_InternetCanonicalizeUrl = "nIetnrteaConinacilezrUl" ascii nocase
$a48_InternetCheckConnection = "nIetnrtehCceCknoentcoin" ascii nocase
$a49_InternetClearAllPerSiteCookieDecisions = "nIetnrtelCaeArllePSrtiCeooikDecesioisn" ascii nocase
$a50_InternetCloseHandle = "nIetnrtelCsoHenalde" ascii nocase
$a51_InternetCombineUrl = "nIetnrteoCbmniUelr" ascii nocase
$a52_InternetConfirmZoneCrossing = "nIetnrteoCfnriZmnoCeorssnig" ascii nocase
$a53_InternetConnect = "nIetnrteoCnncet" ascii nocase
$a54_InternetCrackUrl = "nIetnrterCcaUklr" ascii nocase
$a55_InternetCreateUrl = "nIetnrterCaeetrUl" ascii nocase
$a56_InternetDeInitializeAutoProxyDll = "nIetnrteeDnItiaiilezuAotrPxoDyll" ascii nocase
$a57_InternetDial = "nIetnrteiDla" ascii nocase
$a58_InternetEnumPerSiteCookieDecision = "nIetnrtenEmuePSrtiCeooikDecesioin" ascii nocase
$a59_InternetErrorDlg = "nIetnrterEorDrgl" ascii nocase
$a60_InternetFindNextFile = "nIetnrteiFdneNtxiFel" ascii nocase
$a61_InternetGetConnectedState = "nIetnrteeGCtnoentcdetStae" ascii nocase
$a62_InternetGetConnectedStateEx = "nIetnrteeGCtnoentcdetStaEex" ascii nocase
$a63_InternetGetCookie = "nIetnrteeGCtooike" ascii nocase
$a64_InternetGetCookieEx = "nIetnrteeGCtooikEex" ascii nocase
$a65_InternetGetLastResponseInfo = "nIetnrteeGLtsaRtseopsnIefno" ascii nocase
$a66_InternetGetPerSiteCookieDecision = "nIetnrteeGPtreiSetoCkoeieDicisno" ascii nocase
$a67_InternetGetProxyInfo = "nIetnrteeGPtoryxnIof" ascii nocase
$a68_InternetGoOnline = "nIetnrteoGnOilen" ascii nocase
$a69_InternetHangUp = "nIetnrteaHgnpU" ascii nocase
$a70_InternetInitializeAutoProxyDll = "nIetnrtenItiaiilezuAotrPxoDyll" ascii nocase
$a71_InternetLockRequestFile = "nIetnrteoLkceRuqseFtlie" ascii nocase
$a72_InternetOpen = "nIetnrtepOne" ascii nocase
$a73_InternetOpenUrl = "nIetnrtepOnerUl" ascii nocase
$a74_InternetQueryDataAvailable = "nIetnrteuQreDytaAaavlibael" ascii nocase
$a75_InternetQueryOption = "nIetnrteuQreOytpoin" ascii nocase
$a76_InternetReadFile = "nIetnrteeRdaiFel" ascii nocase
$a77_InternetReadFileEx = "nIetnrteeRdaiFelxE" ascii nocase
$a78_InternetSetCookie = "nIetnrteeSCtooike" ascii nocase
$a79_InternetSetCookieEx = "nIetnrteeSCtooikEex" ascii nocase
$a80_InternetSetDialState = "nIetnrteeSDtaiSlatet" ascii nocase
$a81_InternetSetFilePointer = "nIetnrteeSFtliPeiotnre" ascii nocase
$a82_InternetSetOption = "nIetnrteeSOttpoin" ascii nocase
$a83_InternetSetOptionEx = "nIetnrteeSOttpoiEnx" ascii nocase
$a84_InternetSetPerSiteCookieDecision = "nIetnrteeSPtreiSetoCkoeieDicisno" ascii nocase
$a85_InternetSetStatusCallback = "nIetnrteeSStatutCslablcak" ascii nocase
$a86_InternetStatusCallback = "nIetnrtetStasuaCllabkc" ascii nocase
$a87_InternetTimeFromSystemTime = "nIetnrteiTemrFmoyStsmeiTem" ascii nocase
$a88_InternetTimeToSystemTime = "nIetnrteiTemoTyStsmeiTem" ascii nocase
$a89_InternetUnlockRequestFile = "nIetnrtenUolkceRuqseFtlie" ascii nocase
$a90_InternetWriteFile = "nIetnrterWtiFelie" ascii nocase
$a91_PrivacyGetZonePreferenceW = "rPvicaGyteoZenrPfereneecW" ascii nocase
$a92_PrivacySetZonePreferenceW = "rPvicaSyteoZenrPfereneecW" ascii nocase
$a93_ReadUrlCacheEntryStream = "eRdarUClcaehnErtSyrtaem" ascii nocase
$a94_ResumeSuspendedDownload = "eRusemuSpsneedDdwolnaod" ascii nocase
$a95_RetrieveUrlCacheEntryFile = "eRrteievrUClcaehnErtFylie" ascii nocase
$a96_RetrieveUrlCacheEntryStream = "eRrteievrUClcaehnErtSyrtaem" ascii nocase
$a97_SetUrlCacheEntryGroup = "eSUtlraChcEetnyrrGuop" ascii nocase
$a98_SetUrlCacheEntryInfo = "eSUtlraChcEetnyrnIof" ascii nocase
$a99_SetUrlCacheGroupAttribute = "eSUtlraChcGeorputArtbitue" ascii nocase
$a100_UnlockUrlCacheEntryFile = "nUolkcrUClcaehnErtFylie" ascii nocase
$a101_UnlockUrlCacheEntryStream = "nUolkcrUClcaehnErtSyrtaem" ascii nocase
$a102_InternetClearAllPerSiteCookieDecisions = "nIetnrtelCaeArllePSrtiCeooikDecesioisn" ascii nocase
$a103_InternetEnumPerSiteCookieDecisions = "nIetnrtenEmuePSrtiCeooikDecesioisn" ascii nocase
$a104_InternetGetPerSiteCookieDecisions = "nIetnrteeGPtreiSetoCkoeieDicisnos" ascii nocase
$a105_InternetSetPerSiteCookieDecisions = "nIetnrteeSPtreiSetoCkoeieDicisnos" ascii nocase
$a106_PrivacyGetZonePreferenceW = "rPvicaGyteoZenrPfereneecW" ascii nocase
$a107_PrivacySetZonePreferenceW = "rPvicaSyteoZenrPfereneecW" ascii nocase
condition:
filesize < 15MB and uint16be(0) == 0x4d5a and 1 of them
}
rule Methodology_Mutation_FLIPFLOP_NTAPI_Functions {
meta:
author = "Stairwell"
description = "Searching for PE files with mutations of odd, rare, or interesting string equities. This string mutation takes its inspiration from APT29/CozyBear malware family called FLIPFLOP because it reads in a subfile but reverses every two bytes."
hash = "ee42ddacbd202008bcc1312e548e1d9ac670dd3d86c999606a3a01d464a2a330"
strings:
$a0_KiUserApcDispatcher = "iKsUrepADcsiapctehr" ascii nocase
$a1_NtAlertThread = "tNlAreTtrhaed" ascii nocase
$a2_NtCallbackReturn = "tNaCllabkceRutnr" ascii nocase
$a3_NtQueueApcThread = "tNuQueAecphTerda" ascii nocase
$a4_NtTestAlert = "tNeTtslAret" ascii nocase
$a5_NtAddAtom = "tNdAAdotm" ascii nocase
$a6_NtDeleteAtom = "tNeDelettAmo" ascii nocase
$a7_NtFindAtom = "tNiFdntAmo" ascii nocase
$a8_NtQueryInformationAtom = "tNuQreIyfnroamitnotAmo" ascii nocase
$a9_RtlCompressBuffer = "tRClmorpseBsfuefr" ascii nocase
$a10_RtlDecompressBuffer = "tRDlcemorpseBsfuefr" ascii nocase
$a11_RtlGetCompressionWorkSpaceSize = "tRGlteoCpmerssoiWnroSkapeciSez" ascii nocase
$a12_DbgPrint = "bDPgirtn" ascii nocase
$a13_NtSystemDebugControl = "tNyStsmeeDubCgnortlo" ascii nocase
$a14_RtlCaptureStackBackTrace = "tRClpautertScaBkcaTkarec" ascii nocase
$a15_RtlGetCallersAddress = "tRGlteaCllreAsdderss" ascii nocase
$a16_NtDisplayString = "tNiDpsalSyrtnig" ascii nocase
$a17_NtRaiseException = "tNaRsiEecxpeitno" ascii nocase
$a18_NtRaiseHardError = "tNaRsiHeraEdrrro" ascii nocase
$a19_NtSetDefaultHardErrorPort = "tNeSDtfeuatlaHdrrEorPrrot" ascii nocase
$a20_LdrGetDllHandle = "dLGrtelDHlnalde" ascii nocase
$a21_LdrGetProcedureAddress = "dLGrterPcoderuAedderss" ascii nocase
$a22_LdrLoadDll = "dLLraoDdll" ascii nocase
$a23_LdrQueryProcessModuleInformation = "dLQreuyrrPcoseMsdoluIefnroamitno" ascii nocase
$a24_LdrShutdownProcess = "dLSruhdtwoPnorecss" ascii nocase
$a25_LdrShutdownThread = "dLSruhdtwoTnrhaed" ascii nocase
$a26_LdrUnloadDll = "dLUrlnaoDdll" ascii nocase
$a27_NtLoadDriver = "tNoLdarDvire" ascii nocase
$a28_NtUnloadDriver = "tNnUoldarDvire" ascii nocase
$a29_RtlImageNtHeader = "tRIlamegtNeHdare" ascii nocase
$a30_RtlImageRvaToVa = "tRIlamegvRTaVoa" ascii nocase
$a31_NtFlushWriteBuffer = "tNlFsuWhiretuBffre" ascii nocase
$a32_NtShutdownSystem = "tNhStuodnwyStsme" ascii nocase
$a33_NtQueryDefaultLocale = "tNuQreDyfeuatloLacel" ascii nocase
$a34_NtSetDefaultLocale = "tNeSDtfeuatloLacel" ascii nocase
$a35_RtlAllocateHeap = "tRAlllcotaHeaep" ascii nocase
$a36_RtlCompactHeap = "tRClmoaptceHpa" ascii nocase
$a37_RtlCreateHeap = "tRClertaHeaep" ascii nocase
$a38_RtlDestroyHeap = "tRDlsertyoeHpa" ascii nocase
$a39_RtlEnumProcessHeaps = "tRElunPmorecsseHpas" ascii nocase
$a40_RtlFreeHeap = "tRFlerHeaep" ascii nocase
$a41_RtlGetProcessHeaps = "tRGlterPcoseHsaesp" ascii nocase
$a42_RtlLockHeap = "tRLlcoHkaep" ascii nocase
$a43_RtlProtectHeap = "tRPlorettceHpa" ascii nocase
$a44_RtlReAllocateHeap = "tRRlAellcotaHeaep" ascii nocase
$a45_RtlSizeHeap = "tRSlziHeaep" ascii nocase
$a46_RtlUnlockHeap = "tRUllncoHkaep" ascii nocase
$a47_RtlValidateHeap = "tRVlladitaHeaep" ascii nocase
$a48_RtlValidateProcessHeaps = "tRVlladitaPeorecsseHpas" ascii nocase
$a49_RtlWalkHeap = "tRWllaHkaep" ascii nocase
$a50_NtAllocateVirtualMemory = "tNlAolacetiVtrauMlmeroy" ascii nocase
$a51_NtFlushVirtualMemory = "tNlFsuVhriutlaeMomyr" ascii nocase
$a52_NtFreeVirtualMemory = "tNrFeeiVtrauMlmeroy" ascii nocase
$a53_NtLockVirtualMemory = "tNoLkciVtrauMlmeroy" ascii nocase
$a54_NtProtectVirtualMemory = "tNrPtoceVtriutlaeMomyr" ascii nocase
$a55_NtQueryVirtualMemory = "tNuQreVyriutlaeMomyr" ascii nocase
$a56_NtReadVirtualMemory = "tNeRdaiVtrauMlmeroy" ascii nocase
$a57_NtUnlockVirtualMemory = "tNnUolkciVtrauMlmeroy" ascii nocase
$a58_NtWriteVirtualMemory = "tNrWtiVeriutlaeMomyr" ascii nocase
$a59_NtClose = "tNlCsoe" ascii nocase
$a60_NtDuplicateObject = "tNuDlpcitaOejbcet" ascii nocase
$a61_NtMakeTemporaryObject = "tNaMekeTpmroraOyjbcet" ascii nocase
$a62_NtQueryObject = "tNuQreOyjbcet" ascii nocase
$a63_NtSetInformationObject = "tNeSItfnroamitnobOejtc" ascii nocase
$a64_NtSignalAndWaitForSingleObject = "tNiSnglanAWdiaFtroiSgnelbOejtc" ascii nocase
$a65_NtWaitForMultipleObjects = "tNaWtioFMrluitlpOejbcest" ascii nocase
$a66_NtWaitForSingleObject = "tNaWtioFSrnilgOejbcet" ascii nocase
$a67_NtCreateDebugObject = "tNrCaeeteDubOgjbcet" ascii nocase
$a68_NtDebugActiveProcess = "tNeDubAgtcviPeorecss" ascii nocase
$a69_NtRemoveProcessDebug = "tNeRomevrPcoseDsbegu" ascii nocase
$a70_NtCreateDirectoryObject = "tNrCaeetiDertcroOyjbcet" ascii nocase
$a71_NtOpenDirectoryObject = "tNpOneiDertcroOyjbcet" ascii nocase
$a72_NtQueryDirectoryObject = "tNuQreDyriceotyrbOejtc" ascii nocase
$a73_NtClearEvent = "tNlCaeErevtn" ascii nocase
$a74_NtCreateEvent = "tNrCaeetvEnet" ascii nocase
$a75_NtOpenEvent = "tNpOnevEnet" ascii nocase
$a76_NtPulseEvent = "tNuPslEeevtn" ascii nocase
$a77_NtQueryEvent = "tNuQreEyevtn" ascii nocase
$a78_NtResetEvent = "tNeResEtevtn" ascii nocase
$a79_NtSetEvent = "tNeSEtevtn" ascii nocase
$a80_NtSetEventBoostPriority = "tNeSEtevtnoBsoPtirrotiy" ascii nocase
$a81_NtCreateEventPair = "tNrCaeetvEnePtiar" ascii nocase
$a82_NtOpenEventPair = "tNpOnevEnePtiar" ascii nocase
$a83_NtSetHighEventPair = "tNeSHtgiEhevtnaPri" ascii nocase
$a84_NtSetHighWaitLowEventPair = "tNeSHtgiWhiaLtwovEnePtiar" ascii nocase
$a85_NtSetHighWaitLowThread = "tNeSHtgiWhiaLtwohTerda" ascii nocase
$a86_NtSetLowEventPair = "tNeSLtwovEnePtiar" ascii nocase
$a87_NtSetLowWaitHighEventPair = "tNeSLtwoaWtiiHhgvEnePtiar" ascii nocase
$a88_NtSetLowWaitHighThread = "tNeSLtwoaWtiiHhghTerda" ascii nocase
$a89_NtWaitHighEventPair = "tNaWtiiHhgvEnePtiar" ascii nocase
$a90_NtWaitLowEventPair = "tNaWtioLEwevtnaPri" ascii nocase
$a91_NtCancelIoFile = "tNaCcnleoIiFel" ascii nocase
$a92_NtCreateFile = "tNrCaeetiFel" ascii nocase
$a93_NtCreateMailslotFile = "tNrCaeetaMlilstoiFel" ascii nocase
$a94_NtCreateNamedPipeFile = "tNrCaeetaNemPdpiFelie" ascii nocase
$a95_NtCreatePagingFile = "tNrCaeetaPiggniFel" ascii nocase
$a96_NtDeleteFile = "tNeDeletiFel" ascii nocase
$a97_NtDeviceIoControlFile = "tNeDivecoIoCtnorFllie" ascii nocase
$a98_NtFlushBuffersFile = "tNlFsuBhfuefsriFel" ascii nocase
$a99_NtFsControlFile = "tNsFoCtnorFllie" ascii nocase
$a100_NtLockFile = "tNoLkciFel" ascii nocase
$a101_NtNotifyChangeDirectoryFile = "tNoNityfhCnaegiDertcroFylie" ascii nocase
$a102_NtOpenFile = "tNpOneiFel" ascii nocase
$a103_NtQueryAttributesFile = "tNuQreAyttirubetFslie" ascii nocase
$a104_NtQueryDirectoryFile = "tNuQreDyriceotyriFel" ascii nocase
$a105_NtQueryEaFile = "tNuQreEyFalie" ascii nocase
$a106_NtQueryFullAttributesFile = "tNuQreFyluAlttirubetFslie" ascii nocase
$a107_NtQueryInformationFile = "tNuQreIyfnroamitnoiFel" ascii nocase
$a108_NtQueryOleDirectoryFile = "tNuQreOyeliDertcroFylie" ascii nocase
$a109_NtQueryVolumeInformationFile = "tNuQreVylomuIefnroamitnoiFel" ascii nocase
$a110_NtReadFile = "tNeRdaiFel" ascii nocase
$a111_NtReadFileScatter = "tNeRdaiFelcStaetr" ascii nocase
$a112_NtSetEaFile = "tNeSEtFalie" ascii nocase
$a113_NtSetInformationFile = "tNeSItfnroamitnoiFel" ascii nocase
$a114_NtSetVolumeInformationFile = "tNeSVtlomuIefnroamitnoiFel" ascii nocase
$a115_NtUnlockFile = "tNnUolkciFel" ascii nocase
$a116_NtWriteFile = "tNrWtiFelie" ascii nocase
$a117_NtWriteFileGather = "tNrWtiFeliGetaehr" ascii nocase
$a118_NtCreateIoCompletion = "tNrCaeetoIoCpmelitno" ascii nocase
$a119_NtOpenIoCompletion = "tNpOneoIoCpmelitno" ascii nocase
$a120_NtQueryIoCompletion = "tNuQreIyComolpteoin" ascii nocase
$a121_NtRemoveIoCompletion = "tNeRomevoIoCpmelitno" ascii nocase
$a122_NtSetIoCompletion = "tNeSItComolpteoin" ascii nocase
$a123_NtCompactKeys = "tNoCpmcaKtyes" ascii nocase
$a124_NtCompressKey = "tNoCpmersseKy" ascii nocase
$a125_NtCreateKey = "tNrCaeeteKy" ascii nocase
$a126_NtDeleteKey = "tNeDeleteKy" ascii nocase
$a127_NtDeleteValueKey = "tNeDeletaVulKeye" ascii nocase
$a128_NtEnumerateKey = "tNnEmuretaKeye" ascii nocase
$a129_NtEnumerateValueKey = "tNnEmuretaVelaeueKy" ascii nocase
$a130_NtFlushKey = "tNlFsuKhye" ascii nocase
$a131_NtLoadKey = "tNoLdaeKy" ascii nocase
$a132_NtLoadKey2 = "tNoLdaeK2y" ascii nocase
$a133_NtNotifyChangeKey = "tNoNityfhCnaegeKy" ascii nocase
$a134_NtOpenKey = "tNpOneeKy" ascii nocase
$a135_NtQueryKey = "tNuQreKyye" ascii nocase
$a136_NtQueryMultipleValueKey = "tNuQreMyluitlpVelaeueKy" ascii nocase
$a137_NtQueryValueKey = "tNuQreVylaeueKy" ascii nocase
$a138_NtReplaceKey = "tNeRlpcaKeye" ascii nocase
$a139_NtRestoreKey = "tNeRtsroKeye" ascii nocase
$a140_NtSaveKey = "tNaSeveKy" ascii nocase
$a141_NtSetInformationKey = "tNeSItfnroamitnoeKy" ascii nocase
$a142_NtSetValueKey = "tNeSVtlaeueKy" ascii nocase
$a143_NtUnloadKey = "tNnUoldaeKy" ascii nocase
$a144_RtlFormatCurrentUserKeyPath = "tRFlroamCtruertnsUreeKPytah" ascii nocase
$a145_NtCreateKeyedEvent = "tNrCaeeteKeyEdevtn" ascii nocase
$a146_NtOpenKeyedEvent = "tNpOneeKeyEdevtn" ascii nocase
$a147_NtReleaseKeyedEvent = "tNeRelsaKeyedevEnet" ascii nocase
$a148_NtWaitForKeyedEvent = "tNaWtioFKryedevEnet" ascii nocase
$a149_NtCreateMutant = "tNrCaeetuMattn" ascii nocase
$a150_NtOpenMutant = "tNpOneuMattn" ascii nocase
$a151_NtQueryMutant = "tNuQreMytunat" ascii nocase
$a152_NtReleaseMutant = "tNeRelsaMetunat" ascii nocase
$a153_NtAcceptConnectPort = "tNcAectpoCnncePtrot" ascii nocase
$a154_NtCompleteConnectPort = "tNoCpmeletoCnncePtrot" ascii nocase
$a155_NtConnectPort = "tNoCnncePtrot" ascii nocase
$a156_NtCreatePort = "tNrCaeetoPtr" ascii nocase
$a157_NtImpersonateClientOfPort = "tNmIepsrnotaCeilneOtPfrot" ascii nocase
$a158_NtListenPort = "tNiLtsneoPtr" ascii nocase
$a159_NtQueryInformationPort = "tNuQreIyfnroamitnooPtr" ascii nocase
$a160_NtReadRequestData = "tNeRdaeRuqseDttaa" ascii nocase
$a161_NtReplyPort = "tNeRlpPyrot" ascii nocase
$a162_NtReplyWaitReceivePort = "tNeRlpWyiaRtceieevoPtr" ascii nocase
$a163_NtReplyWaitReplyPort = "tNeRlpWyiaRtpeyloPtr" ascii nocase
$a164_NtRequestPort = "tNeRuqsePtrot" ascii nocase
$a165_NtRequestWaitReplyPort = "tNeRuqseWtiaRtpeyloPtr" ascii nocase
$a166_NtWriteRequestData = "tNrWtiReqeeutsaDat" ascii nocase
$a167_NtCreateProcess = "tNrCaeetrPcoses" ascii nocase
$a168_NtFlushInstructionCache = "tNlFsuIhsnrtcuitnoaChce" ascii nocase
$a169_NtOpenProcess = "tNpOnerPcoses" ascii nocase
$a170_NtQueryInformationProcess = "tNuQreIyfnroamitnorPcoses" ascii nocase
$a171_NtSetInformationProcess = "tNeSItfnroamitnorPcoses" ascii nocase
$a172_NtTerminateProcess = "tNeTmrnitaPeorecss" ascii nocase
$a173_RtlCreateUserProcess = "tRClertaUeesProrecss" ascii nocase
$a174_NtCreateProfile = "tNrCaeetrPfolie" ascii nocase
$a175_NtQueryIntervalProfile = "tNuQreIytnreavPlorifel" ascii nocase
$a176_NtSetIntervalProfile = "tNeSIttnreavPlorifel" ascii nocase
$a177_NtStartProfile = "tNtSraPtorifel" ascii nocase
$a178_NtStopProfile = "tNtSporPfolie" ascii nocase
$a179_NtCreateSection = "tNrCaeeteStcoin" ascii nocase
$a180_NtExtendSection = "tNxEetdneStcoin" ascii nocase
$a181_NtMapViewOfSection = "tNaMVpeiOwSfceitno" ascii nocase
$a182_NtOpenSection = "tNpOneeStcoin" ascii nocase
$a183_NtQuerySection = "tNuQreSyceitno" ascii nocase
$a184_NtUnmapViewOfSection = "tNnUamVpeiOwSfceitno" ascii nocase
$a185_NtCreateSemaphore = "tNrCaeeteSamhproe" ascii nocase
$a186_NtOpenSemaphore = "tNpOneeSamhproe" ascii nocase
$a187_NtQuerySemaphore = "tNuQreSymepaoher" ascii nocase
$a188_NtReleaseSemaphore = "tNeRelsaSemepaoher" ascii nocase
$a189_NtCreateSymbolicLinkObject = "tNrCaeetySbmlociiLknbOejtc" ascii nocase
$a190_NtOpenSymbolicLinkObject = "tNpOneySbmlociiLknbOejtc" ascii nocase
$a191_NtQuerySymbolicLinkObject = "tNuQreSymyobilLcniOkjbcet" ascii nocase
$a192_NtAlertResumeThread = "tNlAreRtsemuTerhaed" ascii nocase
$a193_NtContinue = "tNoCtnnieu" ascii nocase
$a194_NtCreateThread = "tNrCaeethTerda" ascii nocase
$a195_NtCurrentTeb = "tNuCrrneTtbe" ascii nocase
$a196_NtDelayExecution = "tNeDalEyexucitno" ascii nocase
$a197_NtImpersonateThread = "tNmIepsrnotaTerhaed" ascii nocase
$a198_NtOpenThread = "tNpOnehTerda" ascii nocase
$a199_NtQueryInformationThread = "tNuQreIyfnroamitnohTerda" ascii nocase
$a200_NtRegisterThreadTerminatePort = "tNeRigtsrehTerdaeTmrnitaPerot" ascii nocase
$a201_NtResumeThread = "tNeRusemhTerda" ascii nocase
$a202_NtSetInformationThread = "tNeSItfnroamitnohTerda" ascii nocase
$a203_NtSuspendThread = "tNuSpsneTdrhaed" ascii nocase
$a204_NtTerminateThread = "tNeTmrnitaTerhaed" ascii nocase
$a205_NtYieldExecution = "tNiYleEdexucitno" ascii nocase
$a206_RtlCreateUserThread = "tRClertaUeesTrrhaed" ascii nocase
$a207_NtCancelTimer = "tNaCcnleiTemr" ascii nocase
$a208_NtCreateTimer = "tNrCaeetiTemr" ascii nocase
$a209_NtOpenTimer = "tNpOneiTemr" ascii nocase
$a210_NtQueryTimer = "tNuQreTymire" ascii nocase
$a211_NtSetTimer = "tNeSTtmire" ascii nocase
$a212_NtAccessCheck = "tNcAecsshCcek" ascii nocase
$a213_NtAllocateLocallyUniqueId = "tNlAolacetoLacllUyinuqIed" ascii nocase
$a214_NtAllocateUuids = "tNlAolacetuUdis" ascii nocase
$a215_NtPrivilegeCheck = "tNrPviligeCeehkc" ascii nocase
$a216_NtQuerySecurityObject = "tNuQreSycerutiOyjbcet" ascii nocase
$a217_NtSetSecurityObject = "tNeSStcerutiOyjbcet" ascii nocase
$a218_NtQuerySystemInformation = "tNuQreSysyetImfnroamitno" ascii nocase
$a219_NtSetSystemInformation = "tNeSStsyetImfnroamitno" ascii nocase
$a220_NtGetTickCount = "tNeGTtciCkuotn" ascii nocase
$a221_NtQueryPerformanceCounter = "tNuQrePyreofmrnaecoCnuetr" ascii nocase
$a222_NtQuerySystemTime = "tNuQreSysyetTmmie" ascii nocase
$a223_NtQueryTimerResolution = "tNuQreTymireeRosulitno" ascii nocase
$a224_NtSetSystemTime = "tNeSStsyetTmmie" ascii nocase
$a225_NtSetTimerResolution = "tNeSTtmireeRosulitno" ascii nocase
$a226_RtlTimeFieldsToTime = "tRTlmiFeeidlTsTomie" ascii nocase
$a227_RtlTimeToTimeFields = "tRTlmiTeTomiFeeidls" ascii nocase
condition:
filesize < 15MB and uint16be(0) == 0x4d5a and 1 of them
}