GEN:SID | 1:160 |
Message | BACKDOOR NetMetro Incoming Traffic |
Summary | This event is generated when incoming an data stream associated with the NetMetro Trojan Horse is detected.
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Impact | Limited control of the target host.
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Detailed Information | Due to the nature of this Trojan it is unlikely that the attacker's client IP address has been spoofed.
The server portion opens TCP port 5031 by default to establish a connection between client and server. This event indicates that a host external to the protected network running a NetMetro Trojan Server is communicating with a host on the protected network that may be controlling the Trojan.
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Affected Systems | Windows 95 Windows 98 Windows ME Windows NT Windows 2000
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Attack Scenarios | This Trojan may be delivered to the target in a number of ways. This event is indicative of an existing infection being activated. Initial compromise can be in the form of a Win32 installation program that may use the extension ".jpg" or ".bmp" when delivered via e-mail for example.
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Ease of Attack | This is Trojan activity, the target machine may already be compromised. Updated virus definition files are essential in detecting this Trojan.
The Trojan server is named NMS.exe.
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Corrective Action | A reboot of the infected machine is recommended. The Trojan does not start automatically at boot time nor does it change any system registry settings.
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Additional References | Whitehats arachNIDS http://www.whitehats.com/info/IDS79
Dark-e: http://www.dark-e.com/archive/trojans/NetMetro/index.html
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Rule References | arachnids: 79
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