Content

DoS-iFrameNet

Type
Trojan
SubType
Denial Of Svc
Discovery Date
02/19/2003
Length
2,327 bytes
Minimum DAT
4250 (02/26/2003)
Updated DAT
4250 (02/26/2003)
Minimum Engine
5.1.00
Description Added
02/19/2003
Description Modified
02/24/2003 9:46 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This trojan exists as VBScript in an HTML document. It attempts to open hundreds of TELNET sessions by creating an iFrame with the source being a telnet:// address.

The sample received targeted MICROSOFT.COM.

Symptoms

- Hundreds of TELNET windows being opened rapidly or a single TELNET window being opened and closed many times rapidly.
- System resources being exhausted by TELNET

Method of Infection

This script initiates a Denial of Service attack when accessing a trojan HTML document.

Removal

All Users:
Use current engine and DAT files for detection. Delete any file which contains this detection.

Additional Windows ME/XP removal considerations

Variants

Variants

    N/A

All Information

Overview -

This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Aliases

  • HTML_CRINET.A (Trend)
  • Trojan.VBS.IFrame (AVP)
  • VBS/DDoS-iFrameNet

Characteristics

Characteristics -

This trojan exists as VBScript in an HTML document. It attempts to open hundreds of TELNET sessions by creating an iFrame with the source being a telnet:// address.

The sample received targeted MICROSOFT.COM.

Symptoms

Symptoms -

- Hundreds of TELNET windows being opened rapidly or a single TELNET window being opened and closed many times rapidly.
- System resources being exhausted by TELNET

Method of Infection

Method of Infection -

This script initiates a Denial of Service attack when accessing a trojan HTML document.

Removal -

Removal -

All Users:
Use current engine and DAT files for detection. Delete any file which contains this detection.

Additional Windows ME/XP removal considerations

Variants

Variants -

    N/A