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
|
Rule:
--
Sid:
2979
--
Summary:
This event is generated when an attempt is made to access the C$ default
administrative share of a Windows host.
--
Impact:
Serious. Possible administrator access to the host. Information
disclosure.
--
Detailed Information:
By default, Windows hosts have default administrative shares of the
local hard drives using the format %DRIVE_LETTER% + $. Anybody with
administrative rights can remotely access the share.
--
Affected Systems:
Windows hosts.
--
Attack Scenarios:
An attacker may be attempting to access files located on the C drive of
the host.
--
Ease of Attack:
Simple.
--
False Positives:
None Known
--
False Negatives:
None Known
--
Corrective Action:
Disallow Netbios access from external networks (tcp port 139).
--
Contributors:
Original Rule Writer Unknown
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>
Snort documentation contributed by Josh Sakofsky
--
Additional References:
Arachnids:
http://www.whitehats.com/info/IDS339
Microsoft:
http://support.microsoft.com/default.aspx?scid=kb;en-us;100517
--
|