-
Notifications
You must be signed in to change notification settings - Fork 20
/
stream_logs_detail_format.py
691 lines (568 loc) · 32.5 KB
/
stream_logs_detail_format.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
from collections import namedtuple
from io import BytesIO
from struct import error, unpack
from procmon_parser.consts import EventClass, ProcessOperation, RegistryOperation, FilesystemOperation, \
FilesystemSubOperations, FilesysemDirectoryControlOperation, RegistryTypes, RegistryKeyValueInformationClass, \
RegistryKeyInformationClass, get_registry_access_mask_string, RegistryDisposition, RegistryKeySetInformationClass, \
FilesystemQueryInformationOperation, get_filesystem_access_mask_string, FilesystemDisposition, \
get_filesysyem_create_options, get_filesysyem_create_attributes, get_filesysyem_create_share_mode, \
FilesystemOpenResult, get_filesysyem_io_flags, FilesystemPriority, get_ioctl_name, FileInformationClass, \
get_filesysyem_notify_change_flags
from procmon_parser.stream_helper import read_u8, read_u16, read_u32, read_utf16, read_duration, \
read_utf16_multisz, read_u64, read_filetime, read_s64
PmlMetadata = namedtuple('PmlMetadata', ['str_idx', 'process_idx', 'hostname_idx', 'port_idx', 'read_pvoid',
'sizeof_pvoid', 'should_get_stacktrace', 'should_get_details'])
def get_enum_name_or(enum, val, default):
try:
return enum(val).name
except ValueError:
return default
def get_sid_string(sid):
revision = unpack('B', sid[0:1])[0]
if revision != 1:
return '' # Not 1 doesn't exist yet
count = unpack('B', sid[1:2])[0]
authority = unpack(">Q", b"\x00\x00" + sid[2:8])[0]
sid_string = 'S-{}-{}'.format(revision, authority)
binary = sid[8:]
if len(binary) != 4 * count:
return ''
for i in range(count):
value = unpack('<L', binary[4 * i:4 * (i + 1)])[0]
sid_string += '-{}'.format(value)
return sid_string
def read_detail_string_info(io):
"""Reads the info field about a detail string (contains is_ascii and number of characters)
"""
flags = read_u16(io)
return flags >> 15 == 1, flags & (2 ** 15 - 1) # is_ascii, char_count
def read_detail_string(io, string_info):
"""Reads a string in the details that has an info field declared before
"""
is_ascii, character_count = string_info
if is_ascii:
return io.read(character_count).decode("ascii")
else:
return read_utf16(io, character_count * 2)
def get_profiling_event_details(io, metadata, event, extra_detail_io):
pass
def get_network_event_details(io, metadata, event, extra_detail_io):
flags = read_u16(io)
is_source_ipv4 = flags & 1 != 0
is_dest_ipv4 = flags & 2 != 0
is_tcp = flags & 4 != 0
protocol = "TCP" if is_tcp else "UDP"
event.operation = protocol + " " + event.operation
io.seek(2, 1) # Unknown field
event.details['Length'] = read_u32(io)
source_ip = io.read(16)
dest_ip = io.read(16)
source_port = read_u16(io)
dest_port = read_u16(io)
event.path = "{}:{} -> {}:{}".format(
metadata.hostname_idx(source_ip, is_source_ipv4), metadata.port_idx(source_port, is_tcp),
metadata.hostname_idx(dest_ip, is_dest_ipv4), metadata.port_idx(dest_port, is_tcp))
extra_details = read_utf16_multisz(io)
for i in range(len(extra_details) // 2):
event.details[extra_details[i * 2]] = extra_details[i * 2 + 1]
def read_registry_data(io, reg_type_name, length=0):
"""Reads registry data (which is present in the Detail column in original Procmon) according to ``reg_type``
"""
try:
if reg_type_name == RegistryTypes.REG_DWORD.name:
return read_u32(io)
elif reg_type_name == RegistryTypes.REG_QWORD.name:
return read_u64(io)
elif reg_type_name == RegistryTypes.REG_EXPAND_SZ.name or reg_type_name == RegistryTypes.REG_SZ.name:
return read_utf16(io)
elif reg_type_name == RegistryTypes.REG_BINARY.name:
# Assuming the stream ends at the end of the extra detail, so just read everything
return io.read(length)
elif reg_type_name == RegistryTypes.REG_MULTI_SZ.name:
return read_utf16_multisz(io, length)
except error:
return ''
return ''
def get_reg_type_name(reg_type_value):
try:
return RegistryTypes(reg_type_value).name
except ValueError:
return "<Unknown: {}>".format(reg_type_value) # Don't know how to parse this
def get_registry_query_multiple_value_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Read"
def get_registry_set_key_security_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Write Metadata"
def get_registry_query_key_security_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Read Metadata"
def get_registry_delete_key_or_value_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Write"
def get_registry_load_or_rename_extra_details(metadata, event, extra_detail_io, details_info):
new_path = read_detail_string(extra_detail_io, details_info["new_path_info"])
if event.operation == RegistryOperation.RegLoadKey.name:
event.details["Hive Path"] = new_path
elif event.operation == RegistryOperation.RegRenameKey.name:
event.category = "Write"
event.details["New Name"] = new_path
def get_registry_query_or_enum_key_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Read" # RegQueryKey and RegEnumKey is always Read
key_information_class = RegistryKeyInformationClass(details_info["information_class"])
if event.operation == RegistryOperation.RegEnumKey.name:
event.details["Index"] = details_info["index"] # Only in enum
elif event.operation == RegistryOperation.RegQueryKey.name:
event.details["Query"] = key_information_class.name # Only in query
if not extra_detail_io:
# There is no extra details
event.details["Length"] = details_info["length"]
return
if key_information_class == RegistryKeyInformationClass.Name:
# KEY_NAME_INFORMATION structure
name_size = read_u32(extra_detail_io)
event.details["Name"] = read_utf16(extra_detail_io, name_size)
elif key_information_class == RegistryKeyInformationClass.HandleTags:
event.details["HandleTags"] = read_u32(extra_detail_io)
elif key_information_class == RegistryKeyInformationClass.Flags:
event.details["UserFlags"] = read_u32(extra_detail_io)
elif key_information_class == RegistryKeyInformationClass.Cached:
# KEY_CACHED_INFORMATION structure
event.details["LastWriteTime"] = read_filetime(extra_detail_io)
event.details["TitleIndex"] = read_u32(extra_detail_io)
event.details["SubKeys"] = read_u32(extra_detail_io)
event.details["MaxNameLen"] = read_u32(extra_detail_io)
event.details["Values"] = read_u32(extra_detail_io)
event.details["MaxValueNameLen"] = read_u32(extra_detail_io)
event.details["MaxValueDataLen"] = read_u32(extra_detail_io)
elif key_information_class == RegistryKeyInformationClass.Basic:
# KEY_BASIC_INFORMATION structure
event.details["LastWriteTime"] = read_filetime(extra_detail_io)
event.details["TitleIndex"] = read_u32(extra_detail_io)
name_size = read_u32(extra_detail_io)
event.details["Name"] = read_utf16(extra_detail_io, name_size)
elif key_information_class == RegistryKeyInformationClass.Full:
# KEY_FULL_INFORMATION structure
event.details["LastWriteTime"] = read_filetime(extra_detail_io)
event.details["TitleIndex"] = read_u32(extra_detail_io)
event.details["ClassOffset"] = read_u32(extra_detail_io)
event.details["ClassLength"] = read_u32(extra_detail_io)
event.details["SubKeys"] = read_u32(extra_detail_io)
event.details["MaxNameLen"] = read_u32(extra_detail_io)
event.details["MaxClassLen"] = read_u32(extra_detail_io)
event.details["Values"] = read_u32(extra_detail_io)
event.details["MaxValueNameLen"] = read_u32(extra_detail_io)
event.details["MaxValueDataLen"] = read_u32(extra_detail_io)
elif key_information_class == RegistryKeyInformationClass.Node:
# KEY_NODE_INFORMATION structure
event.details["LastWriteTime"] = read_filetime(extra_detail_io)
event.details["TitleIndex"] = read_u32(extra_detail_io)
event.details["ClassOffset"] = read_u32(extra_detail_io)
event.details["ClassLength"] = read_u32(extra_detail_io)
name_size = read_u32(extra_detail_io)
event.details["Name"] = read_utf16(extra_detail_io, name_size)
def get_registry_query_or_enum_value_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Read" # RegQueryValue and RegEnumValue are always Read
key_value_information_class = RegistryKeyValueInformationClass(details_info["information_class"])
if event.operation == RegistryOperation.RegEnumValue.name:
event.details["Index"] = details_info["index"] # Only in enum
if not extra_detail_io:
# There is no extra details
event.details["Length"] = details_info["length"]
return
extra_detail_io.seek(4, 1) # Unknown field
reg_type_name = get_reg_type_name(read_u32(extra_detail_io))
if key_value_information_class == RegistryKeyValueInformationClass.KeyValueFullInformation:
offset_to_data = read_u32(extra_detail_io)
length_value = read_u32(extra_detail_io)
name_size = read_u32(extra_detail_io)
event.details["Name"] = read_utf16(extra_detail_io, name_size)
extra_detail_io.seek(offset_to_data, 0) # the stream starts at the start of the struct so the seek is good
elif key_value_information_class == RegistryKeyValueInformationClass.KeyValuePartialInformation:
length_value = read_u32(extra_detail_io)
else:
# Only KeyValuePartialInformation and KeyValueFullInformation have Data property
event.details["Type"] = reg_type_name # the Type is still known...
return
event.details["Type"] = reg_type_name # I do this assignment here because "Name" comes before "Type"
event.details["Length"] = length_value
if length_value > 0:
event.details["Data"] = read_registry_data(extra_detail_io, reg_type_name, length_value)
def get_registry_open_or_create_key_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Read"
if 0 == details_info["desired_access"]:
return
event.details["Desired Access"] = get_registry_access_mask_string(details_info["desired_access"])
if not extra_detail_io:
return
if event.details["Desired Access"] == "Maximum Allowed":
event.details["Granted Access"] = get_registry_access_mask_string(read_u32(extra_detail_io))
else:
extra_detail_io.seek(4, 1)
disposition = read_u32(extra_detail_io)
try:
event.details["Disposition"] = RegistryDisposition(disposition).name
if event.details["Disposition"] == RegistryDisposition.REG_CREATED_NEW_KEY.name:
event.category = "Write"
except ValueError:
pass
def get_registry_set_info_key_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Write Metadata"
event.details["KeySetInformationClass"] = RegistryKeySetInformationClass.get(
details_info["key_set_information_class"],
"<Unknown: {}>".format(details_info["key_set_information_class"])
)
event.details["Length"] = details_info["length"]
if details_info["length"] > 0:
if event.details["KeySetInformationClass"] == "KeyWriteTimeInformation":
event.details["LastWriteTime"] = read_filetime(extra_detail_io)
elif event.details["KeySetInformationClass"] == "KeyWow64FlagsInformation":
event.details["Wow64Flags"] = read_u32(extra_detail_io)
elif event.details["KeySetInformationClass"] == "KeyWriteTimeInformation":
event.details["HandleTags"] = read_u32(extra_detail_io)
def get_registry_set_value_extra_details(metadata, event, extra_detail_io, details_info):
event.category = "Write"
event.details["Type"] = get_reg_type_name(details_info["reg_type"])
event.details["Length"] = details_info["length"]
length = min(event.details["Length"], details_info["data_length"])
if length > 0 and "Unknown" not in event.details["Type"]:
event.details["Data"] = read_registry_data(extra_detail_io, event.details["Type"], length)
RegistryExtraDetailsHandler = {
RegistryOperation.RegOpenKey.name: get_registry_open_or_create_key_extra_details,
RegistryOperation.RegCreateKey.name: get_registry_open_or_create_key_extra_details,
RegistryOperation.RegQueryKey.name: get_registry_query_or_enum_key_extra_details,
RegistryOperation.RegSetValue.name: get_registry_set_value_extra_details,
RegistryOperation.RegQueryValue.name: get_registry_query_or_enum_value_extra_details,
RegistryOperation.RegEnumValue.name: get_registry_query_or_enum_value_extra_details,
RegistryOperation.RegEnumKey.name: get_registry_query_or_enum_key_extra_details,
RegistryOperation.RegSetInfoKey.name: get_registry_set_info_key_extra_details,
RegistryOperation.RegDeleteKey.name: get_registry_delete_key_or_value_extra_details,
RegistryOperation.RegDeleteValue.name: get_registry_delete_key_or_value_extra_details,
RegistryOperation.RegLoadKey.name: get_registry_load_or_rename_extra_details,
RegistryOperation.RegRenameKey.name: get_registry_load_or_rename_extra_details,
RegistryOperation.RegQueryMultipleValueKey.name: get_registry_query_multiple_value_extra_details,
RegistryOperation.RegSetKeySecurity.name: get_registry_set_key_security_extra_details,
RegistryOperation.RegQueryKeySecurity.name: get_registry_query_key_security_extra_details,
}
def get_registry_event_details(io, metadata, event, extra_detail_io):
path_info = read_detail_string_info(io)
details_info = dict() # information that is needed by the extra details structure
if event.operation in [RegistryOperation.RegLoadKey.name, RegistryOperation.RegRenameKey.name]:
details_info["new_path_info"] = read_detail_string_info(io)
extra_detail_io = io # the new path is a part of the details structure
elif event.operation in [RegistryOperation.RegOpenKey.name, RegistryOperation.RegCreateKey.name]:
io.seek(2, 1) # Unknown field
details_info["desired_access"] = read_u32(io)
elif event.operation in [RegistryOperation.RegQueryKey.name, RegistryOperation.RegQueryValue.name]:
io.seek(2, 1) # Unknown field
details_info["length"] = read_u32(io)
details_info["information_class"] = read_u32(io)
elif event.operation in [RegistryOperation.RegEnumValue.name, RegistryOperation.RegEnumKey.name]:
io.seek(2, 1) # Unknown field
details_info["length"] = read_u32(io)
details_info["index"] = read_u32(io)
details_info["information_class"] = read_u32(io)
elif event.operation == RegistryOperation.RegSetInfoKey.name:
io.seek(2, 1) # Unknown field
details_info["key_set_information_class"] = read_u32(io)
io.seek(4, 1) # Unknown field
details_info["length"] = read_u16(io)
io.seek(2, 1) # Unknown field
extra_detail_io = io # For RegSetInfoKey the data is in the details structure
elif event.operation == RegistryOperation.RegSetValue.name:
io.seek(2, 1) # Unknown field
details_info["reg_type"] = read_u32(io)
details_info["length"] = read_u32(io)
details_info["data_length"] = read_u32(io)
extra_detail_io = io # For RegSetValue the data is in the details structure
event.path = read_detail_string(io, path_info)
# Get the extra details structure
if metadata.should_get_details and event.operation in RegistryExtraDetailsHandler:
RegistryExtraDetailsHandler[event.operation](metadata, event, extra_detail_io, details_info)
def get_filesystem_read_metadata_details(io, metadata, event, details_io, extra_detail_io):
event.category = "Read Metadata"
def get_filesystem_query_directory_details(io, metadata, event, details_io, extra_detail_io):
event.category = "Read Metadata"
directory_name_info = read_detail_string_info(io)
directory_name = read_detail_string(io, directory_name_info)
if directory_name:
event.path = event.path + directory_name if event.path[-1] == "\\" else event.path + "\\" + directory_name
event.details['Filter'] = directory_name
details_io.seek(0x10, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
details_io.seek(0x4, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
file_information_class = FileInformationClass(read_u32(details_io))
event.details["FileInformationClass"] = file_information_class.name
if extra_detail_io and file_information_class in [FileInformationClass.FileDirectoryInformation,
FileInformationClass.FileFullDirectoryInformation,
FileInformationClass.FileBothDirectoryInformation,
FileInformationClass.FileNamesInformation,
FileInformationClass.FileIdBothDirectoryInformation,
FileInformationClass.FileIdFullDirectoryInformation]:
extra_detail_length = len(extra_detail_io.getvalue())
next_entry_offset = -1 # hack so the first iteration won't exit
current_entry_offset = 1
i = 0 if directory_name else -1
while True:
i += 1
if next_entry_offset == 0 or (current_entry_offset + next_entry_offset) > extra_detail_length:
break # No more structures
extra_detail_io.seek(current_entry_offset + next_entry_offset, 0)
current_entry_offset = extra_detail_io.tell()
next_entry_offset = read_u32(extra_detail_io)
file_index = read_u32(extra_detail_io)
if file_information_class == FileInformationClass.FileNamesInformation:
# FILE_NAMES_INFORMATION structure
file_name_length = read_u32(extra_detail_io)
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
creation_time = read_filetime(extra_detail_io)
last_access_time = read_filetime(extra_detail_io)
last_write_time = read_filetime(extra_detail_io)
change_time = read_filetime(extra_detail_io)
end_of_file = read_u64(extra_detail_io)
allocation_size = read_u64(extra_detail_io)
file_attributes = read_u32(extra_detail_io)
file_name_length = read_u32(extra_detail_io)
if file_information_class == FileInformationClass.FileDirectoryInformation:
# FILE_DIRECTORY_INFORMATION structure
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
ea_size = read_u32(extra_detail_io)
if file_information_class == FileInformationClass.FileFullDirectoryInformation:
# FILE_FULL_DIR_INFORMATION structure
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
if file_information_class == FileInformationClass.FileIdFullDirectoryInformation:
# FILE_ID_FULL_DIR_INFORMATION structure
file_id = read_u64(extra_detail_io)
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
short_name_length = read_u8(extra_detail_io)
extra_detail_io.seek(1, 1) # Padding
short_name = extra_detail_io.read(12 * 2)
if file_information_class == FileInformationClass.FileBothDirectoryInformation:
# FILE_BOTH_DIR_INFORMATION structure
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
# FILE_ID_BOTH_DIR_INFORMATION structure
extra_detail_io.seek(2, 1) # Padding
file_id = read_u64(extra_detail_io)
event.details[str(i)] = read_utf16(extra_detail_io, file_name_length)
continue
def get_filesystem_notify_change_directory_details(io, metadata, event, details_io, extra_detail_io):
event.category = "Read Metadata"
details_io.seek(0x10, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
event.details["Filter"] = get_filesysyem_notify_change_flags(read_u32(details_io))
def get_filesystem_create_file_details(io, metadata, event, details_io, extra_detail_io):
event.details["Desired Access"] = get_filesystem_access_mask_string(read_u32(io))
impersonating_sid_length = read_u8(io)
io.seek(0x3, 1) # padding
details_io.seek(0x10, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
disposition_and_options = read_u32(details_io)
disposition = disposition_and_options >> 0x18
options = disposition_and_options & 0xffffff
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
attributes = read_u16(details_io)
share_mode = read_u16(details_io)
event.details["Disposition"] = get_enum_name_or(FilesystemDisposition, disposition, "<unknown>")
event.details["Options"] = get_filesysyem_create_options(options)
event.details["Attributes"] = get_filesysyem_create_attributes(attributes)
event.details["ShareMode"] = get_filesysyem_create_share_mode(share_mode)
details_io.seek(0x4 + metadata.sizeof_pvoid * 2, 1)
allocation = read_u32(details_io)
allocation_value = allocation if disposition in [FilesystemDisposition.Supersede, FilesystemDisposition.Create,
FilesystemDisposition.OpenIf,
FilesystemDisposition.OverwriteIf] else "n/a"
event.details["AllocationSize"] = allocation_value
if impersonating_sid_length:
event.details["Impersonating"] = get_sid_string(io.read(impersonating_sid_length))
open_result = None
if extra_detail_io:
open_result = read_u32(extra_detail_io)
event.details["OpenResult"] = get_enum_name_or(FilesystemOpenResult, open_result, "<unknown>")
if open_result in [FilesystemOpenResult.Superseded, FilesystemOpenResult.Created, FilesystemOpenResult.Overwritten]:
event.category = "Write"
elif open_result in [FilesystemOpenResult.Opened, FilesystemOpenResult.Exists, FilesystemOpenResult.DoesNotExist]:
pass
elif event.details["Disposition"] in ["Open", "<unknown>"]:
pass
else:
event.category = "Write"
def get_filesystem_read_write_file_details(io, metadata, event, details_io, extra_detail_io):
event.category = "Read" if event.operation == "ReadFile" else "Write"
details_io.seek(0x4, 1)
io_flags_and_priority = read_u32(details_io)
io_flags = io_flags_and_priority & 0xe000ff
priority = (io_flags_and_priority >> 0x11) & 7
details_io.seek(0x4, 1)
length = read_u32(details_io)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
details_io.seek(0x4, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
offset = read_s64(details_io)
event.details["Offset"] = offset
if extra_detail_io:
length = read_u32(extra_detail_io)
event.details["Length"] = length
if io_flags != 0:
event.details["I/O Flags"] = get_filesysyem_io_flags(io_flags)
if priority != 0:
event.details["Priority"] = FilesystemPriority.get(priority, "0x{:x}".format(priority))
def get_filesystem_ioctl_details(io, metadata, event, details_io, extra_detail_io):
details_io.seek(0x8, 1)
write_length = read_u32(details_io)
read_length = read_u32(details_io)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
details_io.seek(0x4, 1)
if metadata.sizeof_pvoid == 8:
details_io.seek(4, 1) # Padding for 64 bit
ioctl = read_u32(details_io)
event.details["Control"] = get_ioctl_name(ioctl)
if event.details["Control"] in ["FSCTL_OFFLOAD_READ", "FSCTL_GET_REPARSE_POINT", "FSCTL_READ_RAW_ENCRYPTED"]:
event.category = "Read"
elif event.details["Control"] in ["FSCTL_OFFLOAD_WRITE", "FSCTL_MOVE_FILE", "FSCTL_DELETE_REPARSE_POINT",
"FSCTL_WRITE_RAW_ENCRYPTED", "FSCTL_PIPE_TRANSCEIVE",
"FSCTL_PIPE_INTERNAL_TRANSCEIVE"]:
event.category = "Write"
elif event.details["Control"] in ["FSCTL_SET_COMPRESSION", "FSCTL_WRITE_PROPERTY_DATA", "FSCTL_SET_OBJECT_ID",
"FSCTL_DELETE_OBJECT_ID", "FSCTL_SET_REPARSE_POINT", "FSCTL_SET_SPARSE",
"FSCTL_SET_ENCRYPTION", "FSCTL_CREATE_USN_JOURNAL",
"FSCTL_WRITE_USN_CLOSE_RECORD", "FSCTL_EXTEND_VOLUME",
"FSCTL_DELETE_USN_JOURNAL"]:
event.category = "Write Metadata"
elif event.details["Control"] in ["FSCTL_QUERY_RETRIEVAL_POINTERS", "FSCTL_GET_COMPRESSION",
"FSCTL_QUERY_FAT_BPB", "FSCTL_QUERY_FAT_BPB",
"FSCTL_FILESYSTEM_GET_STATISTICS", "FSCTL_GET_NTFS_VOLUME_DATA",
"FSCTL_GET_NTFS_FILE_RECORD", "FSCTL_GET_VOLUME_BITMAP",
"FSCTL_GET_RETRIEVAL_POINTERS", "FSCTL_IS_VOLUME_DIRTY",
"FSCTL_READ_PROPERTY_DATA", "FSCTL_FIND_FILES_BY_SID", "FSCTL_GET_OBJECT_ID",
"FSCTL_READ_USN_JOURNAL", "FSCTL_SET_OBJECT_ID_EXTENDED",
"FSCTL_CREATE_OR_GET_OBJECT_ID", "FSCTL_READ_FILE_USN_DATA",
"FSCTL_QUERY_USN_JOURNAL"]:
event.category = "Read Metadata"
if event.operation == "FileSystemControl":
if event.details["Control"] == "FSCTL_PIPE_INTERNAL_WRITE":
event.details["Length"] = write_length
elif event.details["Control"] == "FSCTL_OFFLOAD_READ":
details_io.seek(0x8, 1)
event.details["Offset"] = read_s64(io)
event.details["Length"] = read_u64(io)
elif event.details["Control"] == "FSCTL_OFFLOAD_WRITE":
event.details["Offset"] = read_s64(io)
event.details["Length"] = read_u64(io)
elif event.details["Control"] == "FSCTL_PIPE_INTERNAL_READ":
event.details["Length"] = read_length
elif event.details["Control"] in ["FSCTL_PIPE_TRANSCEIVE", "FSCTL_PIPE_INTERNAL_TRANSCEIVE"]:
event.details["WriteLength"] = write_length
event.details["ReadLength"] = read_length
FilesystemSubOperationHandler = {
FilesystemOperation.CreateFile.name: get_filesystem_create_file_details,
FilesystemOperation.ReadFile.name: get_filesystem_read_write_file_details,
FilesystemOperation.WriteFile.name: get_filesystem_read_write_file_details,
FilesystemOperation.FileSystemControl.name: get_filesystem_ioctl_details,
FilesysemDirectoryControlOperation.QueryDirectory.name: get_filesystem_query_directory_details,
FilesysemDirectoryControlOperation.NotifyChangeDirectory.name: get_filesystem_notify_change_directory_details,
FilesystemOperation.DeviceIoControl.name: get_filesystem_ioctl_details,
FilesystemQueryInformationOperation.QueryIdInformation.name: get_filesystem_read_metadata_details,
FilesystemQueryInformationOperation.QueryRemoteProtocolInformation.name: get_filesystem_read_metadata_details,
}
def get_filesystem_event_details(io, metadata, event, extra_detail_io):
sub_operation = read_u8(io)
io.seek(0x3, 1) # padding
# fix operation name if there is more specific sub operation
if 0 != sub_operation and FilesystemOperation[event.operation] in FilesystemSubOperations:
try:
event.operation = FilesystemSubOperations[FilesystemOperation[event.operation]](sub_operation).name
except ValueError:
event.operation += " <Unknown>"
details_io = BytesIO(io.read(metadata.sizeof_pvoid * 5 + 0x14))
path_info = read_detail_string_info(io)
io.seek(2, 1) # Padding
event.path = read_detail_string(io, path_info)
if metadata.should_get_details and event.operation in FilesystemSubOperationHandler:
FilesystemSubOperationHandler[event.operation](io, metadata, event, details_io, extra_detail_io)
def get_process_created_details(io, metadata, event, extra_detail_io):
io.seek(4, 1) # Unknown fields
event.details["PID"] = read_u32(io)
io.seek(0x24, 1) # Unknown fields
unknown_size1 = read_u8(io)
unknown_size2 = read_u8(io)
path_info = read_detail_string_info(io)
command_line_info = read_detail_string_info(io)
io.seek(2 + unknown_size1 + unknown_size2, 1) # Unknown fields
event.path = read_detail_string(io, path_info)
event.details["Command line"] = read_detail_string(io, command_line_info)
def get_process_started_details(io, metadata, event, extra_detail_io):
event.details["Parent PID"] = read_u32(io)
command_line_info = read_detail_string_info(io)
current_directory_info = read_detail_string_info(io)
environment_character_count = read_u32(io)
event.details["Command line"] = read_detail_string(io, command_line_info)
event.details["Current directory"] = read_detail_string(io, current_directory_info)
event.details["Environment"] = read_utf16_multisz(io, environment_character_count * 2)
def get_process_exit_details(io, metadata, event, extra_details_io):
event.details["Exit Status"] = read_u32(io)
kernel_time = read_duration(io)
user_time = read_duration(io)
working_set = read_u64(io)
peak_working_set = read_u64(io)
private_bytes = read_u64(io)
peak_private_bytes = read_u64(io)
event.details["User Time"] = user_time
event.details["Kernel Time"] = kernel_time
event.details["Private Bytes"] = private_bytes
event.details["Peak Private Bytes"] = peak_private_bytes
event.details["Working Set"] = working_set
event.details["Peak Working Set"] = peak_working_set
def get_load_image_details(io, metadata, event, extra_detail_io):
event.details["Image Base"] = metadata.read_pvoid(io)
event.details["Image Size"] = read_u32(io)
path_info = read_detail_string_info(io)
io.seek(2, 1) # Unknown field
event.path = read_detail_string(io, path_info)
def get_thread_create_details(io, metadata, event, extra_detail_io):
event.details["Thread ID"] = read_u32(io)
def get_thread_exit_details(io, metadata, event, extra_detail_io):
event.details["Thread ID"] = event.tid
io.seek(4, 1) # Unknown fields
kernel_time = read_duration(io)
user_time = read_duration(io)
event.details["User Time"] = user_time
event.details["Kernel Time"] = kernel_time
ProcessSpecificOperationHandler = {
ProcessOperation.Process_Defined.name: get_process_created_details,
ProcessOperation.Process_Create.name: get_process_created_details,
ProcessOperation.Process_Exit.name: get_process_exit_details,
ProcessOperation.Thread_Create.name: get_thread_create_details,
ProcessOperation.Thread_Exit.name: get_thread_exit_details,
ProcessOperation.Load_Image.name: get_load_image_details,
ProcessOperation.Process_Start.name: get_process_started_details,
ProcessOperation.Process_Statistics.name: get_process_exit_details,
}
def get_process_event_details(io, metadata, event, extra_detail_io):
if event.operation in ProcessSpecificOperationHandler:
ProcessSpecificOperationHandler[event.operation](io, metadata, event, extra_detail_io)
ClassEventDetailsHandler = {
EventClass.Process: get_process_event_details,
EventClass.Registry: get_registry_event_details,
EventClass.File_System: get_filesystem_event_details,
EventClass.Profiling: get_profiling_event_details,
EventClass.Network: get_network_event_details
}
def get_event_details(detail_stream, metadata, event, extra_detail_stream):
"""Calculates the specific details of the event in the stream. The stream should be after the common
information of the event.
:param detail_stream: the stream of the details structure.
:param metadata: metadata of the PML file.
:param event: the event object to fill.
:param extra_detail_stream: the stream of the extra details structure.
"""
ClassEventDetailsHandler[event.event_class](detail_stream, metadata, event, extra_detail_stream)