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Network Security Snort-Signatures
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[Snort-sigs] FP for NETBIOS SMB-DS winreg OpenKey unicode little endian

Subject: [Snort-sigs] FP for NETBIOS SMB-DS winreg OpenKey unicode little endian overflow attempt,Sig ID,3228
Date: Mon, 06 Mar 2006 08:39:31 +1300
I am seeing several thousand hits a day coming from our Symantec AV
server to a handful of hosts.

As usual I'm happy to supply session data.

Russell

META
--------
SID     CID     TimeStamp               Signature
1       3934707 2006-03-05 09:52:22     NETBIOS SMB-DS winreg OpenKey unicode
little endian overflow attempt
Sig ID
3228

Sensor Hostname                         Sensor Interface
monitor-itss.insec.auckland.ac.nz       ITSS sector switch

IP
--------
Source Address  Dest Address    Ver     Hdr Len
130.216.190.16  130.216.193.34  4       5
TOS     length  ID      flags   offset  TTL     chksum
0       240     26081   2       0       124     4931

Resolved Source
symantec.auckland.ac.nz

Resolved Dest
b.oliver3.sat.auckland.ac.nz

TCP
--------
Source Port     Dest Port       Seq             Ack             
2722            445             1216340687      3983244039
Offset  Reserved        Flags   Window  Checksum        Urgent Ptr
5       0               24      63839   13871           0

Options
--------
None


Flags
--------
RB 1    RB 0    URG     ACK     PSH     RST     SYN     FIN
                        X       X                               

DATA
--------
000000C4FF534D422500    .....SMB%.
0000001807C800000000    ..........
00000000000000000008    ..........
D4010008102610000070    .....&...p
00000000040000000000    ..........
00000000000000540070    .......T.p
005400020026000F0081    .T...&....
00005C00500049005000    ..\.P.I.P.
45005C00000000000500    E.\.......
00031000000070001000    ......p...
03000000340000000000    ....4.....
0F004F3765B7EB1E2807    ..O7e...(.
D64B893D6A57FD8E8C18    .K.=jW....
08587C30198D9EAFDFED    .X|0......
2434891DC4153A865A1C    $4....:.Z.
0CE6B3F51A6AD7CEF1DE    .....j....
3AE13FE9CE7C478EF858    :.?..|G..X
7FBC30CA36EB09060C00    ..0.6.....
00000000010000002496    ........$.
3DF5017C54BC02000000    =..|T.....

DATA
--------
.....SMB%..........................&...p.................T.p
.T...&......\.P.I.P.E.\.............p.......4.......O7e...(.
.K.=jW.....X|0......$4....:.Z......j....:.?..|G..X..0.6.....
........$.=..|T.....


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