File: 235.txt

package info (click to toggle)
snort 2.9.15.1-5
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 59,656 kB
  • sloc: ansic: 310,441; sh: 13,260; makefile: 2,943; yacc: 497; perl: 496; lex: 261; sed: 14
file content (65 lines) | stat: -rw-r--r-- 1,655 bytes parent folder | download | duplicates (8)
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
Rule:

--
Sid:
235

--
Summary:
This event is generated when a trinoo DDoS attacker host communicates with a master host.  

--
Impact:
Attempted DDoS. If the listed source IP is in your network, it may be a trinoo attacker. If the listed destination IP is in your network, it may be a trinoo master.

--
Detailed Information:
The trinoo DDoS uses a tiered structure of compromised hosts to coordinate and participate in a distributed denial of service attack. At the highest level, attackers communicate with masters to direct them to launch attacks.  An attacker may communicate with a master via TCP destination port 27665 with a string of "killme" in the payload.  This string is a default mdie password.

--
Affected Systems:
Any trinoo compromised host.

--
Attack Scenarios:
A trinoo attacker will communicate with masters to direct them to launch attacks.

--
Ease of Attack:
Simple. trinoo code is freely available.

--
False Positives:
None Known.

--
False Negatives:
None Known.

--
Corrective Action:
Perform proper forensic analysis on the suspected compromised host to discover the means of compromise.

Rebuild a confirmed compromised host.

Use a packet-filtering firewall to block inappropriate traffic to the network to prevent hosts from being compromised.


--
Contributors:
Original rule writer unknown
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>
Judy Novak <judy.novak@sourcefire.com>

--
Additional References:
CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0138
SecurityFocus:
http://www.securityfocus.com/archive/1/37706

CERT:
http://www.cert.org/incident_notes/IN-99-07.html#trinoo

--