Analysis by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Trend Micro has flagged this hacking tool as noteworthy due to the increased potential for damage, information theft, or both, that it possesses. Specifically, it is a form of a proof-of-concept hack with sidejacking capabilities, which can potentially be used for malicious purposes.

To get a one-glance comprehensive view of the behavior of this Hacking Tool, refer to the Threat Diagram shown below.

This hacking tool is a Firefox add-on that is installed manually by the user.

  TECHNICAL DETAILS

File Size: Varies
File Type: PE
Memory Resident: No
Initial Samples Received Date: 27 Oct 2010

Arrival Details

This hacking tool may be downloaded from the following remote sites:

  • http://{BLOCKED}tler.github.com/firesheep/

Other Details

Based on analysis of the codes, it has the following capabilities:

  • Launches the Carnivore sniffer to retrieve user IDs and session IDs from cookie information of network packets. It specifically monitors transactions on the following websites:
    • amazon.com
    • basecamphq.com
    • bit.ly
    • cisco.com
    • cnet.com
    • dropbox.com
    • enom.com
    • evernote.com
    • facebook.com
    • flickr.com
    • foursquare.com
    • github.com
    • google.com
    • gowalla.com
    • harvestapp.com
    • live.com
    • manage.slicehost.com
    • news.ycombinator.com
    • nytimes.com
    • pivotaltracker.com
    • sandiego.toorcon.org
    • tumblr.com
    • twitter.com
    • wordpress.org
    • yahoo.com
    • yelp.com
    • It also displays the stolen information on a sidebar in the Firefox browser.

  SOLUTION

Minimum Scan Engine: 8.900
SSAPI PATTERN File: 1.119.00
SSAPI PATTERN Date: 04 Nov 2010

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Close all opened browser windows

Step 3

Scan your computer with your Trend Micro product to delete files detected as HKTL_FYRSNIFF. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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