Difference between pages "Network forensics" and "Windows SuperFetch Format"

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(Open Source Network Forensics)
 
(File header)
 
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'''Network forensics''' is the process of capturing information that moves over a [[network]] and trying to make sense of it in some kind of forensics capacity. A [[network forensics appliance]] is a device that automates this process.
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{{expand}}
  
There are both open source and proprietary network forensics systems available.  
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== MEMO file ==
 +
Some of the <tt>Ag*.db</tt> files are MEMO files.
  
== Open Source Network Forensics ==
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The MEMO file consists of:
 +
* file header
 +
* compressed blocks
  
* [[Snort]]
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=== File header ===
* [[OSSEC]]
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The file header is 84 bytes of size and consists of:
* [[Xplico]]
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{| class="wikitable"
 +
|-
 +
! Offset
 +
! Size
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| 4
 +
| 0x304D454D ("MEM0") or 0x4F4D454D ("MEMO")
 +
| Signature
 +
|-
 +
| 4
 +
| 4
 +
|
 +
| Uncompressed (total) data size
 +
|-
 +
|}
  
== Commercial Network Forensics ==
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=== Compressed blocks ===
===Deep-Analysis Systems===
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The file header is followed by compressed blocks:
* Code Green Networks [http://www.codegreennetworks.com Content Inspection Appliance] - Passive monitoring and mandatory proxy mode. Simple to us Web GUI. Linux platform. Uses Stellent Outside In to access document content and metadata.
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{| class="wikitable"
* ManTech International Corporation [http://www.netwitness.com/ NetWitness]
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|-
* Network Instruments [http://www.networkinstruments.com/]
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! Offset
* NIKSUN's [[NetDetector]]
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! Size
* PacketMotion [http://www.packetmotion.com/]
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! Value
* Sandstorm's [http://www.sandstorm.net/products/netintercept/ NetIntercept] - Passive monitoring appliance. Qt/X11 GUI. FreeBSD platform. Uses forensic parsers written by Sandstorm to access document content and metadata.
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! Description
 +
|-
 +
| 0
 +
| 4
 +
|
 +
| Compressed data size
 +
|-
 +
| 4
 +
| ...
 +
|
 +
| Compressed data
 +
|-
 +
|}
  
===Flow-Based Systems===
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=== Uncompressed data ===
* Arbor Networks
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<b>TODO</b>
* GraniteEdge Networks http://www.graniteedgenetworks.com/
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* Lancope http://www.lancope.com/
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* Mazu Networks http://www.mazunetworks.com/
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===Hybrid Systems===
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== TRX file ==
These systems combine flow analysis, deep analysis, and security event monitoring and reporting.
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The <tt>Ag*.db.trx</tt> files are TRX files.
* Q1 Labs  http://www.q1labs.com/
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== Tips and Tricks ==
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<b>Note that the following format specification is incomplete.</b>
  
* The time between two events triggered by an intruder (as seen in logfiles, for example) can be helpful. If it is very short, you can be pretty sure that the actions were performed by an automated script and not by a human user.
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=== File header ===
 +
The file header is 84 bytes of size and consists of:
 +
{| class="wikitable"
 +
|-
 +
! Offset
 +
! Size
 +
! Value
 +
! Description
 +
|-
 +
| 0
 +
| 4
 +
| 1
 +
| Unknown (Version?)
 +
|-
 +
| 4
 +
| 4
 +
|
 +
| Unknown
 +
|-
 +
| 8
 +
| 4
 +
|
 +
| File size
 +
|-
 +
| 12
 +
| 4
 +
|
 +
| Unknown (Record count?)
 +
|-
 +
| 16
 +
| 4
 +
|
 +
| Unknown (Record count?)
 +
|-
 +
| 20
 +
| 4
 +
|
 +
| Unknown (Records offset or file header size)
 +
|-
 +
|}
 +
 
 +
== See Also ==
 +
* [[SuperFetch]]
 +
 
 +
== External Links ==
 +
* [http://blog.rewolf.pl/blog/?p=214 Windows SuperFetch file format – partial specification], by ReWolf, October 5, 2011
 +
 
 +
[[Category:File Formats]]

Revision as of 01:28, 15 April 2014

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Please help to improve this article by expanding it.
Further information might be found on the discussion page.

MEMO file

Some of the Ag*.db files are MEMO files.

The MEMO file consists of:

  • file header
  • compressed blocks

File header

The file header is 84 bytes of size and consists of:

Offset Size Value Description
0 4 0x304D454D ("MEM0") or 0x4F4D454D ("MEMO") Signature
4 4 Uncompressed (total) data size

Compressed blocks

The file header is followed by compressed blocks:

Offset Size Value Description
0 4 Compressed data size
4 ... Compressed data

Uncompressed data

TODO

TRX file

The Ag*.db.trx files are TRX files.

Note that the following format specification is incomplete.

File header

The file header is 84 bytes of size and consists of:

Offset Size Value Description
0 4 1 Unknown (Version?)
4 4 Unknown
8 4 File size
12 4 Unknown (Record count?)
16 4 Unknown (Record count?)
20 4 Unknown (Records offset or file header size)

See Also

External Links