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hook_file.c
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hook_file.c
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/*
Cuckoo Sandbox - Automated Malware Analysis
Copyright (C) 2010-2015 Cuckoo Sandbox Developers, Optiv, Inc. ([email protected])
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <ctype.h>
#include "ntapi.h"
#include <shlwapi.h>
#include "hooking.h"
#include "log.h"
#include "pipe.h"
#include "misc.h"
#include "ignore.h"
#include "lookup.h"
#include "config.h"
#define DUMP_FILE_MASK ((GENERIC_ALL | GENERIC_WRITE | FILE_GENERIC_WRITE | \
FILE_WRITE_DATA | FILE_APPEND_DATA | STANDARD_RIGHTS_WRITE | MAXIMUM_ALLOWED) & ~SYNCHRONIZE)
// length of a hardcoded unicode string
#define UNILEN(x) (sizeof(x) / sizeof(wchar_t) - 1)
typedef struct _file_record_t {
unsigned int attributes;
size_t length;
wchar_t filename[0];
} file_record_t;
typedef struct _file_log_t {
unsigned int read_count;
unsigned int write_count;
} file_log_t;
static lookup_t g_files;
static lookup_t g_file_logs;
void file_init()
{
specialname_map_init();
lookup_init(&g_files);
lookup_init(&g_file_logs);
}
static void add_file_to_log_tracking(HANDLE fhandle)
{
file_log_t *r = lookup_add(&g_file_logs, (ULONG_PTR)fhandle, sizeof(file_log_t));
memset(r, 0, sizeof(*r));
}
static unsigned int increment_file_log_read_count(HANDLE fhandle)
{
file_log_t *r = lookup_get(&g_file_logs, (ULONG_PTR)fhandle, NULL);
if (r != NULL)
return ++r->read_count;
return 0;
}
static unsigned int increment_file_log_write_count(HANDLE fhandle)
{
file_log_t *r = lookup_get(&g_file_logs, (ULONG_PTR)fhandle, NULL);
if (r != NULL)
return ++r->write_count;
return 0;
}
void remove_file_from_log_tracking(HANDLE fhandle)
{
lookup_del(&g_file_logs, (ULONG_PTR)fhandle);
}
static void new_file_path_ascii(const char *fname)
{
char *absolutename = malloc(32768);
if (absolutename != NULL) {
unsigned int len;
ensure_absolute_ascii_path(absolutename, fname);
len = (unsigned int)strlen(absolutename);
pipe("FILE_NEW:%s", len, absolutename);
}
}
static void new_file_path_unicode(const wchar_t *fname)
{
wchar_t *absolutename = malloc(32768 * sizeof(wchar_t));
if (absolutename != NULL) {
unsigned int len;
ensure_absolute_unicode_path(absolutename, fname);
len = lstrlenW(absolutename);
pipe("FILE_NEW:%S", len, absolutename);
}
}
static void new_file(const UNICODE_STRING *obj)
{
const wchar_t *str = obj->Buffer;
unsigned int len = obj->Length / sizeof(wchar_t);
// maybe it's an absolute path (or a relative path with a harddisk,
// such as C:abc.txt)
if(isalpha(str[0]) != 0 && str[1] == ':') {
pipe("FILE_NEW:%S", len, str);
}
}
static void cache_file(HANDLE file_handle, const wchar_t *path,
unsigned int length_in_chars, unsigned int attributes)
{
file_record_t *r = lookup_add(&g_files, (ULONG_PTR)file_handle,
sizeof(file_record_t) + length_in_chars * sizeof(wchar_t) + sizeof(wchar_t));
memset(r, 0, sizeof(*r));
r->attributes = attributes;
r->length = length_in_chars;
wcsncpy(r->filename, path, r->length + 1);
}
void file_write(HANDLE file_handle)
{
file_record_t *r;
lasterror_t lasterror;
get_lasterrors(&lasterror);
r = lookup_get(&g_files, (ULONG_PTR)file_handle, NULL);
if(r != NULL) {
UNICODE_STRING str;
str.Length = (USHORT)r->length * sizeof(wchar_t);
str.MaximumLength = ((USHORT)r->length + 1) * sizeof(wchar_t);
str.Buffer = r->filename;
// we do in fact want to dump this file because it was written to
new_file(&str);
// delete the file record from the list
lookup_del(&g_files, (ULONG_PTR)file_handle);
}
set_lasterrors(&lasterror);
}
static void check_for_logging_resumption(const OBJECT_ATTRIBUTES *obj)
{
lasterror_t lasterror;
get_lasterrors(&lasterror);
if (g_config.file_of_interest && g_config.suspend_logging) {
wchar_t *fname = calloc(1, 32768 * sizeof(wchar_t));
wchar_t *absolutename = malloc(32768 * sizeof(wchar_t));
BOOLEAN ret = FALSE;
path_from_object_attributes(obj, fname, 32768);
ensure_absolute_unicode_path(absolutename, fname);
if (!wcsicmp(absolutename, g_config.file_of_interest))
g_config.suspend_logging = FALSE;
free(absolutename);
free(fname);
}
set_lasterrors(&lasterror);
}
static void handle_new_file(HANDLE file_handle, const OBJECT_ATTRIBUTES *obj)
{
lasterror_t lasterror;
get_lasterrors(&lasterror);
if(is_directory_objattr(obj) == 0) {
wchar_t *fname = calloc(32768, sizeof(wchar_t));
wchar_t *absolutename = calloc(32768, sizeof(wchar_t));
path_from_object_attributes(obj, fname, 32768);
if (absolutename != NULL) {
unsigned int len;
ensure_absolute_unicode_path(absolutename, fname);
len = lstrlenW(absolutename);
// cache this file
if (is_ignored_file_unicode(absolutename, len) == 0)
cache_file(file_handle, absolutename, len, obj->Attributes);
free(absolutename);
}
else {
if (is_ignored_file_objattr(obj) == 0)
cache_file(file_handle, fname, lstrlenW(fname), obj->Attributes);
}
free(fname);
}
set_lasterrors(&lasterror);
}
// XXX: if we ever track entries which contain pointers themselves that use runtime allocation
// this needs to be rewritten, sufficient for now for file_log_t and file_record_t
static void __handle_duplicate(lookup_t *d, HANDLE old_handle, HANDLE new_handle)
{
unsigned int size;
void *rdata;
lasterror_t lasterror;
get_lasterrors(&lasterror);
rdata = lookup_get(d, (ULONG_PTR)old_handle, &size);
if (rdata) {
void *data = lookup_add(d, (ULONG_PTR)new_handle, size);
if (data)
memcpy(data, rdata, size);
}
set_lasterrors(&lasterror);
}
void handle_duplicate(HANDLE old_handle, HANDLE new_handle)
{
__handle_duplicate(&g_file_logs, old_handle, new_handle);
__handle_duplicate(&g_files, old_handle, new_handle);
}
void file_close(HANDLE file_handle)
{
lasterror_t lasterror;
get_lasterrors(&lasterror);
lookup_del(&g_files, (ULONG_PTR) file_handle);
set_lasterrors(&lasterror);
}
static BOOLEAN is_protected_objattr(POBJECT_ATTRIBUTES obj)
{
wchar_t path[MAX_PATH_PLUS_TOLERANCE];
wchar_t *absolutepath = malloc(32768 * sizeof(wchar_t));
if (absolutepath) {
path_from_object_attributes(obj, path, MAX_PATH_PLUS_TOLERANCE);
ensure_absolute_unicode_path(absolutepath, path);
if (!wcsnicmp(g_config.w_analyzer, absolutepath, wcslen(g_config.w_analyzer))) {
lasterror_t lasterror;
lasterror.NtstatusError = STATUS_ACCESS_DENIED;
lasterror.Win32Error = ERROR_ACCESS_DENIED;
set_lasterrors(&lasterror);
free(absolutepath);
return TRUE;
}
free(absolutepath);
}
return FALSE;
}
HOOKDEF(NTSTATUS, WINAPI, NtCreateFile,
__out PHANDLE FileHandle,
__in ACCESS_MASK DesiredAccess,
__in POBJECT_ATTRIBUTES ObjectAttributes,
__out PIO_STATUS_BLOCK IoStatusBlock,
__in_opt PLARGE_INTEGER AllocationSize,
__in ULONG FileAttributes,
__in ULONG ShareAccess,
__in ULONG CreateDisposition,
__in ULONG CreateOptions,
__in PVOID EaBuffer,
__in ULONG EaLength
) {
NTSTATUS ret;
BOOL file_existed;
check_for_logging_resumption(ObjectAttributes);
if (is_protected_objattr(ObjectAttributes))
return STATUS_ACCESS_DENIED;
file_existed = file_exists(ObjectAttributes);
ret = Old_NtCreateFile(FileHandle, DesiredAccess,
ObjectAttributes, IoStatusBlock, AllocationSize, FileAttributes,
ShareAccess | FILE_SHARE_READ, CreateDisposition, CreateOptions, EaBuffer, EaLength);
LOQ_ntstatus("filesystem", "PhOiihss", "FileHandle", FileHandle, "DesiredAccess", DesiredAccess,
"FileName", ObjectAttributes, "CreateDisposition", CreateDisposition,
"ShareAccess", ShareAccess, "FileAttributes", FileAttributes, "ExistedBefore", file_existed ? "yes" : "no", "StackPivoted", is_stack_pivoted() ? "yes" : "no");
if(NT_SUCCESS(ret)) {
add_file_to_log_tracking(*FileHandle);
if ((DesiredAccess & DUMP_FILE_MASK) && !(FileAttributes & FILE_ATTRIBUTE_TEMPORARY))
handle_new_file(*FileHandle, ObjectAttributes);
}
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtOpenFile,
__out PHANDLE FileHandle,
__in ACCESS_MASK DesiredAccess,
__in POBJECT_ATTRIBUTES ObjectAttributes,
__out PIO_STATUS_BLOCK IoStatusBlock,
__in ULONG ShareAccess,
__in ULONG OpenOptions
) {
NTSTATUS ret;
check_for_logging_resumption(ObjectAttributes);
if (is_protected_objattr(ObjectAttributes))
return STATUS_ACCESS_DENIED;
ret = Old_NtOpenFile(FileHandle, DesiredAccess, ObjectAttributes,
IoStatusBlock, ShareAccess | FILE_SHARE_READ, OpenOptions);
LOQ_ntstatus("filesystem", "PhOi", "FileHandle", FileHandle, "DesiredAccess", DesiredAccess,
"FileName", ObjectAttributes, "ShareAccess", ShareAccess);
if (NT_SUCCESS(ret)) {
add_file_to_log_tracking(*FileHandle);
if (DesiredAccess & DUMP_FILE_MASK)
handle_new_file(*FileHandle, ObjectAttributes);
}
return ret;
}
static HANDLE LastFileHandle;
static ULONG AccumulatedLength;
CRITICAL_SECTION readfile_critsec;
static PVOID InitialBuffer;
static SIZE_T InitialBufferLength;
HOOKDEF(NTSTATUS, WINAPI, NtReadFile,
__in HANDLE FileHandle,
__in_opt HANDLE Event,
__in_opt PIO_APC_ROUTINE ApcRoutine,
__in_opt PVOID ApcContext,
__out PIO_STATUS_BLOCK IoStatusBlock,
__out PVOID Buffer,
__in ULONG Length,
__in_opt PLARGE_INTEGER ByteOffset,
__in_opt PULONG Key
) {
NTSTATUS ret = Old_NtReadFile(FileHandle, Event, ApcRoutine, ApcContext,
IoStatusBlock, Buffer, Length, ByteOffset, Key);
wchar_t *fname;
BOOLEAN deletelast;
unsigned int read_count = 0;
ULONG_PTR length;
lasterror_t lasterrors;
get_lasterrors(&lasterrors);
if (NT_SUCCESS(ret))
length = IoStatusBlock->Information;
else
length = 0;
if (get_last_api() == API_NTREADFILE && FileHandle == LastFileHandle) {
// can overflow, but we don't care much
AccumulatedLength += (ULONG)length;
deletelast = TRUE;
}
else {
PVOID prev;
SIZE_T len = min(length, buffer_log_max);
PVOID newbuf;
EnterCriticalSection(&readfile_critsec);
newbuf = malloc(len);
memcpy(newbuf, Buffer, len);
prev = InitialBuffer;
InitialBuffer = newbuf;
if (prev)
free(prev);
LastFileHandle = FileHandle;
AccumulatedLength = (ULONG)length;
InitialBufferLength = len;
LeaveCriticalSection(&readfile_critsec);
deletelast = FALSE;
read_count = increment_file_log_read_count(FileHandle);
}
set_special_api(API_NTREADFILE, deletelast);
set_lasterrors(&lasterrors);
if (read_count <= 50) {
fname = calloc(32768, sizeof(wchar_t));
path_from_handle(FileHandle, fname, 32768);
if (read_count < 50)
LOQ_ntstatus("filesystem", "pFbl", "FileHandle", FileHandle,
"HandleName", fname, "Buffer", InitialBufferLength, InitialBuffer, "Length", AccumulatedLength);
else if (read_count == 50)
LOQ_ntstatus("filesystem", "pFbls", "FileHandle", FileHandle,
"HandleName", fname, "Buffer", InitialBufferLength, InitialBuffer, "Length", AccumulatedLength, "Status", "Maximum logged reads reached for this file");
free(fname);
}
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtWriteFile,
__in HANDLE FileHandle,
__in_opt HANDLE Event,
__in_opt PIO_APC_ROUTINE ApcRoutine,
__in_opt PVOID ApcContext,
__out PIO_STATUS_BLOCK IoStatusBlock,
__in PVOID Buffer,
__in ULONG Length,
__in_opt PLARGE_INTEGER ByteOffset,
__in_opt PULONG Key
) {
NTSTATUS ret = Old_NtWriteFile(FileHandle, Event, ApcRoutine, ApcContext,
IoStatusBlock, Buffer, Length, ByteOffset, Key);
wchar_t *fname;
unsigned int write_count;
ULONG_PTR length;
if (NT_SUCCESS(ret))
length = IoStatusBlock->Information;
else
length = 0;
write_count = increment_file_log_write_count(FileHandle);
if (write_count <= 50) {
fname = calloc(32768, sizeof(wchar_t));
path_from_handle(FileHandle, fname, 32768);
if (write_count < 50) {
LOQ_ntstatus("filesystem", "pFbl", "FileHandle", FileHandle,
"HandleName", fname, "Buffer", length, Buffer, "Length", length);
}
else if (write_count == 50) {
LOQ_ntstatus("filesystem", "pFbls", "FileHandle", FileHandle,
"HandleName", fname, "Buffer", length, Buffer, "Length", length, "Status", "Maximum logged writes reached for this file");
}
free(fname);
}
if(NT_SUCCESS(ret)) {
file_write(FileHandle);
}
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtDeleteFile,
__in POBJECT_ATTRIBUTES ObjectAttributes
) {
wchar_t path[MAX_PATH_PLUS_TOLERANCE];
wchar_t *absolutepath = malloc(32768 * sizeof(wchar_t));
NTSTATUS ret;
path_from_object_attributes(ObjectAttributes, path, MAX_PATH_PLUS_TOLERANCE);
ensure_absolute_unicode_path(absolutepath, path);
pipe("FILE_DEL:%Z", absolutepath);
ret = Old_NtDeleteFile(ObjectAttributes);
LOQ_ntstatus("filesystem", "u", "FileName", absolutepath);
free(absolutepath);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtDeviceIoControlFile,
__in HANDLE FileHandle,
__in HANDLE Event,
__in PIO_APC_ROUTINE ApcRoutine,
__in PVOID ApcContext,
__out PIO_STATUS_BLOCK IoStatusBlock,
__in ULONG IoControlCode,
__in PVOID InputBuffer,
__in ULONG InputBufferLength,
__out PVOID OutputBuffer,
__in ULONG OutputBufferLength
) {
ULONG_PTR length;
NTSTATUS ret = Old_NtDeviceIoControlFile(FileHandle, Event,
ApcRoutine, ApcContext, IoStatusBlock, IoControlCode,
InputBuffer, InputBufferLength, OutputBuffer,
OutputBufferLength);
if (NT_SUCCESS(ret))
length = IoStatusBlock->Information;
else
length = 0;
LOQ_ntstatus("device", "phbb", "FileHandle", FileHandle,
"IoControlCode", IoControlCode,
"InputBuffer", InputBufferLength, InputBuffer,
"OutputBuffer", length, OutputBuffer);
if (!g_config.no_stealth && NT_SUCCESS(ret) && OutputBuffer)
perform_device_fakery(OutputBuffer, (ULONG)length, IoControlCode);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtQueryDirectoryFile,
__in HANDLE FileHandle,
__in_opt HANDLE Event,
__in_opt PIO_APC_ROUTINE ApcRoutine,
__in_opt PVOID ApcContext,
__out PIO_STATUS_BLOCK IoStatusBlock,
__out PVOID FileInformation,
__in ULONG Length,
__in FILE_INFORMATION_CLASS FileInformationClass,
__in BOOLEAN ReturnSingleEntry,
__in_opt PUNICODE_STRING FileName,
__in BOOLEAN RestartScan
) {
OBJECT_ATTRIBUTES objattr;
NTSTATUS ret;
ULONG_PTR length;
memset(&objattr, 0, sizeof(objattr));
objattr.ObjectName = FileName;
objattr.RootDirectory = FileHandle;
ret = Old_NtQueryDirectoryFile(FileHandle, Event,
ApcRoutine, ApcContext, IoStatusBlock, FileInformation,
Length, FileInformationClass, ReturnSingleEntry,
FileName, RestartScan);
if (NT_SUCCESS(ret))
length = IoStatusBlock->Information;
else
length = 0;
/* don't log the resulting buffer, otherwise we can't turn these calls into simple duplicates */
if (FileInformationClass == FileNamesInformation) {
LOQ_ntstatus("filesystem", "pOi", "FileHandle", FileHandle,
"FileName", &objattr, "FileInformationClass", FileInformationClass);
}
else {
LOQ_ntstatus("filesystem", "pbOi", "FileHandle", FileHandle,
"FileInformation", length, FileInformation,
"FileName", &objattr, "FileInformationClass", FileInformationClass);
}
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtQueryInformationFile,
__in HANDLE FileHandle,
__out PIO_STATUS_BLOCK IoStatusBlock,
__out PVOID FileInformation,
__in ULONG Length,
__in FILE_INFORMATION_CLASS FileInformationClass
) {
wchar_t *fname = calloc(32768, sizeof(wchar_t));
wchar_t *absolutepath = calloc(32768, sizeof(wchar_t));
NTSTATUS ret;
ULONG_PTR length;
path_from_handle(FileHandle, fname, 32768);
ensure_absolute_unicode_path(absolutepath, fname);
ret = Old_NtQueryInformationFile(FileHandle, IoStatusBlock,
FileInformation, Length, FileInformationClass);
if (NT_SUCCESS(ret))
length = IoStatusBlock->Information;
else
length = 0;
LOQ_ntstatus("filesystem", "puib", "FileHandle", FileHandle, "HandleName", absolutepath, "FileInformationClass", FileInformationClass,
"FileInformation", length, FileInformation);
free(fname);
free(absolutepath);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtQueryAttributesFile,
__in POBJECT_ATTRIBUTES ObjectAttributes,
__out PFILE_BASIC_INFORMATION FileInformation
) {
NTSTATUS ret = Old_NtQueryAttributesFile(ObjectAttributes, FileInformation);
LOQ_ntstatus("filesystem", "O", "FileName", ObjectAttributes);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtQueryFullAttributesFile,
__in POBJECT_ATTRIBUTES ObjectAttributes,
__out PFILE_NETWORK_OPEN_INFORMATION FileInformation
) {
NTSTATUS ret = Old_NtQueryFullAttributesFile(ObjectAttributes, FileInformation);
LOQ_ntstatus("filesystem", "O", "FileName", ObjectAttributes);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtSetInformationFile,
__in HANDLE FileHandle,
__out PIO_STATUS_BLOCK IoStatusBlock,
__in PVOID FileInformation,
__in ULONG Length,
__in FILE_INFORMATION_CLASS FileInformationClass
) {
wchar_t *fname = calloc(32768, sizeof(wchar_t));
wchar_t *absolutepath = calloc(32768, sizeof(wchar_t));
NTSTATUS ret;
path_from_handle(FileHandle, fname, 32768);
ensure_absolute_unicode_path(absolutepath, fname);
if(FileInformation != NULL && Length == sizeof(BOOLEAN) &&
FileInformationClass == FileDispositionInformation &&
*(BOOLEAN *) FileInformation != FALSE) {
pipe("FILE_DEL:%Z", absolutepath);
}
ret = Old_NtSetInformationFile(FileHandle, IoStatusBlock,
FileInformation, Length, FileInformationClass);
LOQ_ntstatus("filesystem", "puib", "FileHandle", FileHandle, "HandleName", absolutepath, "FileInformationClass", FileInformationClass,
"FileInformation", Length, FileInformation);
free(fname);
free(absolutepath);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtOpenDirectoryObject,
__out PHANDLE DirectoryHandle,
__in ACCESS_MASK DesiredAccess,
__in POBJECT_ATTRIBUTES ObjectAttributes
) {
NTSTATUS ret = Old_NtOpenDirectoryObject(DirectoryHandle, DesiredAccess,
ObjectAttributes);
LOQ_ntstatus("filesystem", "PhO", "DirectoryHandle", DirectoryHandle,
"DesiredAccess", DesiredAccess, "ObjectAttributes", ObjectAttributes);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtCreateDirectoryObject,
__out PHANDLE DirectoryHandle,
__in ACCESS_MASK DesiredAccess,
__in POBJECT_ATTRIBUTES ObjectAttributes
) {
NTSTATUS ret = Old_NtCreateDirectoryObject(DirectoryHandle, DesiredAccess,
ObjectAttributes);
LOQ_ntstatus("filesystem", "PhO", "DirectoryHandle", DirectoryHandle,
"DesiredAccess", DesiredAccess, "ObjectAttributes", ObjectAttributes);
return ret;
}
HOOKDEF(NTSTATUS, WINAPI, NtQueryDirectoryObject,
__in HANDLE DirectoryHandle,
__out_opt PVOID Buffer,
__in ULONG Length,
__in BOOLEAN ReturnSingleEntry,
__in BOOLEAN RestartScan,
__inout PULONG Context,
__out_opt PULONG ReturnLength
) {
NTSTATUS ret = Old_NtQueryDirectoryObject(DirectoryHandle, Buffer, Length,
ReturnSingleEntry, RestartScan, Context, ReturnLength);
// Don't log STATUS_BUFFER_TOO_SMALL
if (ret != 0xC0000023)
LOQ_ntstatus("filesystem", "p", "DirectoryHandle", DirectoryHandle);
return ret;
}
HOOKDEF(BOOL, WINAPI, CreateDirectoryW,
__in LPWSTR lpPathName,
__in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes
) {
BOOL ret = Old_CreateDirectoryW(lpPathName, lpSecurityAttributes);
LOQ_bool("filesystem", "F", "DirectoryName", lpPathName);
return ret;
}
HOOKDEF(BOOL, WINAPI, CreateDirectoryExW,
__in LPWSTR lpTemplateDirectory,
__in LPWSTR lpNewDirectory,
__in_opt LPSECURITY_ATTRIBUTES lpSecurityAttributes
) {
BOOL ret = Old_CreateDirectoryExW(lpTemplateDirectory, lpNewDirectory,
lpSecurityAttributes);
LOQ_bool("filesystem", "F", "DirectoryName", lpNewDirectory);
return ret;
}
HOOKDEF(BOOL, WINAPI, RemoveDirectoryA,
__in LPCSTR lpPathName
) {
char path[MAX_PATH];
BOOL ret;
ensure_absolute_ascii_path(path, lpPathName);
ret = Old_RemoveDirectoryA(lpPathName);
LOQ_bool("filesystem", "s", "DirectoryName", path);
return ret;
}
HOOKDEF(BOOL, WINAPI, RemoveDirectoryW,
__in LPWSTR lpPathName
) {
wchar_t *path = malloc(32768 * sizeof(wchar_t));
BOOL ret;
ensure_absolute_unicode_path(path, lpPathName);
ret = Old_RemoveDirectoryW(lpPathName);
LOQ_bool("filesystem", "u", "DirectoryName", path);
free(path);
return ret;
}
HOOKDEF_NOTAIL(WINAPI, MoveFileWithProgressW,
__in LPWSTR lpExistingFileName,
__in_opt LPWSTR lpNewFileName,
__in_opt LPPROGRESS_ROUTINE lpProgressRoutine,
__in_opt LPVOID lpData,
__in DWORD dwFlags
) {
BOOL ret = TRUE;
if (lpProgressRoutine) {
LOQ_bool("filesystem", "FFh", "ExistingFileName", lpExistingFileName,
"NewFileName", lpNewFileName, "Flags", dwFlags);
return 0;
}
return 1;
}
HOOKDEF_ALT(BOOL, WINAPI, MoveFileWithProgressW,
__in LPWSTR lpExistingFileName,
__in_opt LPWSTR lpNewFileName,
__in_opt LPPROGRESS_ROUTINE lpProgressRoutine,
__in_opt LPVOID lpData,
__in DWORD dwFlags
) {
wchar_t *path = malloc(32768 * sizeof(wchar_t));
BOOL ret;
ensure_absolute_unicode_path(path, lpExistingFileName);
ret = Old_MoveFileWithProgressW(lpExistingFileName, lpNewFileName,
lpProgressRoutine, lpData, dwFlags);
LOQ_bool("filesystem", "uFh", "ExistingFileName", path,
"NewFileName", lpNewFileName, "Flags", dwFlags);
if (ret != FALSE) {
if (lpNewFileName)
pipe("FILE_MOVE:%Z::%F", path, lpNewFileName);
else {
// we can do this here because it's not scheduled for deletion until reboot
pipe("FILE_DEL:%Z", path);
}
}
free(path);
return ret;
}
HOOKDEF_NOTAIL(WINAPI, MoveFileWithProgressTransactedW,
__in LPWSTR lpExistingFileName,
__in_opt LPWSTR lpNewFileName,
__in_opt LPPROGRESS_ROUTINE lpProgressRoutine,
__in_opt LPVOID lpData,
__in DWORD dwFlags,
__in HANDLE hTransaction
) {
BOOL ret = TRUE;
if (lpProgressRoutine) {
LOQ_bool("filesystem", "FFh", "ExistingFileName", lpExistingFileName,
"NewFileName", lpNewFileName, "Flags", dwFlags);
return 0;
}
return 1;
}
HOOKDEF_ALT(BOOL, WINAPI, MoveFileWithProgressTransactedW,
__in LPWSTR lpExistingFileName,
__in_opt LPWSTR lpNewFileName,
__in_opt LPPROGRESS_ROUTINE lpProgressRoutine,
__in_opt LPVOID lpData,
__in DWORD dwFlags,
__in HANDLE hTransaction
) {
BOOL ret;
hook_info_t saved_hookinfo;
memcpy(&saved_hookinfo, hook_info(), sizeof(saved_hookinfo));
ret = Old_MoveFileWithProgressTransactedW(lpExistingFileName, lpNewFileName,
lpProgressRoutine, lpData, dwFlags, hTransaction);
memcpy(hook_info(), &saved_hookinfo, sizeof(saved_hookinfo));
if (!called_by_hook()) {
wchar_t *path = malloc(32768 * sizeof(wchar_t));
ensure_absolute_unicode_path(path, lpExistingFileName);
LOQ_bool("filesystem", "uFh", "ExistingFileName", path,
"NewFileName", lpNewFileName, "Flags", dwFlags);
if (ret != FALSE) {
if (lpNewFileName)
pipe("FILE_MOVE:%Z::%F", path, lpNewFileName);
else {
// we can do this here because it's not scheduled for deletion until reboot
pipe("FILE_DEL:%Z", path);
}
}
free(path);
}
return ret;
}
HOOKDEF(HANDLE, WINAPI, FindFirstFileExA,
__in LPCSTR lpFileName,
__in FINDEX_INFO_LEVELS fInfoLevelId,
__out LPVOID lpFindFileData,
__in FINDEX_SEARCH_OPS fSearchOp,
__reserved LPVOID lpSearchFilter,
__in DWORD dwAdditionalFlags
) {
HANDLE ret = Old_FindFirstFileExA(lpFileName, fInfoLevelId,
lpFindFileData, fSearchOp, lpSearchFilter, dwAdditionalFlags);
if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE && lpFileName &&
(!_strnicmp(lpFileName, g_config.analyzer, strlen(g_config.analyzer)) || !_strnicmp(lpFileName, g_config.results, strlen(g_config.results)))
) {
lasterror_t lasterror;
lasterror.Win32Error = 0x00000002;
lasterror.NtstatusError = 0xc000000f;
FindClose(ret);
set_lasterrors(&lasterror);
ret = INVALID_HANDLE_VALUE;
}
else if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE &&
(!stricmp(((PWIN32_FIND_DATAA)lpFindFileData)->cFileName, g_config.analyzer + 3) ||
!stricmp(((PWIN32_FIND_DATAA)lpFindFileData)->cFileName, g_config.results + 3)))
{
BOOL result = FindNextFileA(ret, lpFindFileData);
if (result == FALSE) {
lasterror_t lasterror;
lasterror.Win32Error = 0x00000002;
lasterror.NtstatusError = 0xc000000f;
FindClose(ret);
set_lasterrors(&lasterror);
ret = INVALID_HANDLE_VALUE;
}
}
if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE && (!stricmp(lpFileName, "c:\\windows") || !stricmp(lpFileName, "c:\\pagefile.sys")))
perform_create_time_fakery(&((PWIN32_FIND_DATAA)lpFindFileData)->ftCreationTime);
if (g_config.sysvol_ctime.dwLowDateTime && ret != INVALID_HANDLE_VALUE && !stricmp(lpFileName, "c:\\System Volume Information"))
((PWIN32_FIND_DATAA)lpFindFileData)->ftCreationTime = g_config.sysvol_ctime;
if (g_config.sys32_ctime.dwLowDateTime && ret != INVALID_HANDLE_VALUE && !stricmp(lpFileName, "c:\\windows\\system32"))
((PWIN32_FIND_DATAA)lpFindFileData)->ftCreationTime = g_config.sys32_ctime;
if (ret != INVALID_HANDLE_VALUE)
LOQ_handle("filesystem", "fhh", "FileName", lpFileName,
"FirstCreateTimeLow", ((PWIN32_FIND_DATAA)lpFindFileData)->ftCreationTime.dwLowDateTime,
"FirstCreateTimeHigh", ((PWIN32_FIND_DATAA)lpFindFileData)->ftCreationTime.dwHighDateTime);
else
LOQ_handle("filesystem", "f", "FileName", lpFileName);
return ret;
}
HOOKDEF(HANDLE, WINAPI, FindFirstFileExW,
__in LPWSTR lpFileName,
__in FINDEX_INFO_LEVELS fInfoLevelId,
__out LPVOID lpFindFileData,
__in FINDEX_SEARCH_OPS fSearchOp,
__reserved LPVOID lpSearchFilter,
__in DWORD dwAdditionalFlags
) {
HANDLE ret = Old_FindFirstFileExW(lpFileName, fInfoLevelId,
lpFindFileData, fSearchOp, lpSearchFilter, dwAdditionalFlags);
if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE && lpFileName &&
(!wcsnicmp(lpFileName, g_config.w_analyzer, wcslen(g_config.w_analyzer)) || !wcsnicmp(lpFileName, g_config.w_results, wcslen(g_config.w_results)))
) {
lasterror_t lasterror;
lasterror.Win32Error = 0x00000002;
lasterror.NtstatusError = 0xc000000f;
FindClose(ret);
set_lasterrors(&lasterror);
ret = INVALID_HANDLE_VALUE;
}
else if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE &&
(!wcsicmp(((PWIN32_FIND_DATAW)lpFindFileData)->cFileName, g_config.w_analyzer + 3) ||
!wcsicmp(((PWIN32_FIND_DATAW)lpFindFileData)->cFileName, g_config.w_results + 3)))
{
BOOL result = FindNextFileW(ret, lpFindFileData);
if (result == FALSE) {
lasterror_t lasterror;
lasterror.Win32Error = 0x00000002;
lasterror.NtstatusError = 0xc000000f;
FindClose(ret);
set_lasterrors(&lasterror);
ret = INVALID_HANDLE_VALUE;
}
}
if (!g_config.no_stealth && ret != INVALID_HANDLE_VALUE && (!wcsicmp(lpFileName, L"c:\\windows") || !wcsicmp(lpFileName, L"c:\\pagefile.sys")))
perform_create_time_fakery(&((PWIN32_FIND_DATAW)lpFindFileData)->ftCreationTime);
if (g_config.sysvol_ctime.dwLowDateTime && ret != INVALID_HANDLE_VALUE && !wcsicmp(lpFileName, L"c:\\System Volume Information"))
((PWIN32_FIND_DATAW)lpFindFileData)->ftCreationTime = g_config.sysvol_ctime;
if (g_config.sys32_ctime.dwLowDateTime && ret != INVALID_HANDLE_VALUE && !wcsicmp(lpFileName, L"c:\\windows\\system32"))
((PWIN32_FIND_DATAW)lpFindFileData)->ftCreationTime = g_config.sys32_ctime;
if (ret != INVALID_HANDLE_VALUE)
LOQ_handle("filesystem", "Fhh", "FileName", lpFileName,
"FirstCreateTimeLow", ((PWIN32_FIND_DATAW)lpFindFileData)->ftCreationTime.dwLowDateTime,
"FirstCreateTimeHigh", ((PWIN32_FIND_DATAW)lpFindFileData)->ftCreationTime.dwHighDateTime);
else
LOQ_handle("filesystem", "F", "FileName", lpFileName);
return ret;
}
HOOKDEF(BOOL, WINAPI, FindNextFileW,
__in HANDLE hFindFile,
__out LPWIN32_FIND_DATAW lpFindFileData
) {
BOOL ret = Old_FindNextFileW(hFindFile, lpFindFileData);
while (!g_config.no_stealth && ret && (!wcsicmp(lpFindFileData->cFileName, g_config.w_analyzer + 3) ||
!wcsicmp(lpFindFileData->cFileName, g_config.w_results + 3))) {
ret = Old_FindNextFileW(hFindFile, lpFindFileData);
}
// not logging this due to the flood of logs it would cause
return ret;
}
HOOKDEF(BOOL, WINAPI, CopyFileA,
__in LPCSTR lpExistingFileName,
__in LPCSTR lpNewFileName,
__in BOOL bFailIfExists
) {
BOOL ret;
BOOL file_existed = FALSE;
if (GetFileAttributesA(lpNewFileName) != INVALID_FILE_ATTRIBUTES)
file_existed = TRUE;
ret = Old_CopyFileA(lpExistingFileName, lpNewFileName,
bFailIfExists);
LOQ_bool("filesystem", "ffs", "ExistingFileName", lpExistingFileName,
"NewFileName", lpNewFileName, "ExistedBefore", file_existed ? "yes" : "no");
if (ret)
new_file_path_ascii(lpNewFileName);
return ret;
}
HOOKDEF(BOOL, WINAPI, CopyFileW,
__in LPWSTR lpExistingFileName,
__in LPWSTR lpNewFileName,
__in BOOL bFailIfExists
) {
BOOL ret;
BOOL file_existed = FALSE;
if (GetFileAttributesW(lpNewFileName) != INVALID_FILE_ATTRIBUTES)
file_existed = TRUE;
ret = Old_CopyFileW(lpExistingFileName, lpNewFileName,