Snort mailing list archives

RE: Code Green???


From: Jim Howard <Jim.Howard () abcv com>
Date: Tue, 18 Sep 2001 09:44:50 -0500

doesn't appear to be code green tho... just looked at cert's website.  The
sig looks different.  Still investigating.

-----Original Message-----
From: Matthew Francis [mailto:mf () in-tuition co uk]
Sent: Tuesday, September 18, 2001 9:27 AM
To: Snort Users (E-mail)
Subject: [Snort-users] Code Green???


Hi,

I'm getting LOADS of what looks like New Code Red attacks - Could this be
Code Green???  From one single 'attacking' PC I'm getting the following log
(There's 2 IDS's 1:Internet Facing, 2:DMZ):-

18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1264 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1264 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1275 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1275 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1287 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1287 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1294 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
WEB-../..:
{Attacking PC}:1294 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1294 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1304 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
WEB-../..:
{Attacking PC}:1304 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1304 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1316 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1316 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1316 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1316 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
WEB-../..:
{Attacking PC}:1316 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1323 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1323 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1323 -> {Destination Server}:80
18-09-2001      15:13:55        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1331 -> {Destination Server}:80
18-09-2001      15:13:55        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1331 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1341 -> {Destination Server}:80
18-09-2001      15:13:56        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1341 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1341 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1350 -> {Destination Server}:80
18-09-2001      15:13:56        System0.Alert   {IDS 2}    snort[1472]:
spp_http_decode:
IIS Unicode attack detected: {Attacking PC}:1350 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1350 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1363 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1363 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1380 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1380 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1388 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:970:1]  WEB-IIS
multiple decode attempt [Classification: Attempted User Privilege Gain
Priority: 8]: {Attacking PC}:1388 -> {Destination Server}:80
18-09-2001      15:13:56        Auth.Alert      {IDS 1} snort[846]:
[1:1002:1]  WEB-IIS
cmd.exe access [Classification: Attempted User Privilege Gain   Priority:
8]: {Attacking PC}:1395 -> {Destination Server}:80

Obviously this is a massive log for one 'attack' attempt and I'm getting
this a LOT from all different IP address ranges which are all standard dial
up accounts (the ones I've checked anyway) with what looks like unpatched
IIS servers.

Anyone shed any light???

Thanks

-----
Matthew Francis


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