RE: Increase in Sub7 scans

From: bparisat_private
Date: Tue Jun 12 2001 - 10:06:27 PDT

  • Next message: Justin Shore: "Re: Increase in Sub7 scans"

    	On June 4th around 8:30EDT, the popular online game server,
    Battle.Net (http://www.battle.net) began restricting bots from logging onto
    their servers.
    
    	Many players had used these bots to control their private "clan
    channels". Since they were no longer able use their old bots (i.e.:
    http://www.ultimatebot.com), they turned to using "binary" bots that are
    able to fool the BattleNet servers into thinking that they are a player
    logging onto the server instead of a bot. The vast majority of these bots
    being passed around are "trojaned" with various backdoors that load Sub7
    onto the victims box, or DL Sub7 onto the victims box.
    
    	One popular binary bot making the rounds is Damnbot
    (http://damnbot.cjb.net). Although the webpage claims to say the version
    available for download is virus-free, it indeed contains a backdoor which
    was caught by McAfee using their latest defs. Others floating around are
    ScBot and D2SkyBot (particularly nasty).
    
    	I have samples of the D2 and SC bots available for inspection...
    
    William S. Paris
    Telecommunication/Network Analyst
    Sorrento Lactalis Inc.
    bparisat_private
    	
    
    -----Original Message-----
    From: Obert, Jack E. [mailto:JObertat_private]
    Sent: Tuesday, June 12, 2001 9:43 AM
    To: 'incidentsat_private'
    Subject: Increase in Sub7 scans
    
    
    Since February, I've been receiving tcp port scans for the default sub7 port
    (27374) at a rate of approximately 3-4 per day.  Starting on June 8th to
    present, I've been receiving them at 9 times that rate.  
    
    6/5/01 - 3 Scans
    6/6/01 - 4 Scans
    6/7/01 - 3 Scans
    6/8/01 - 8 Scans
    6/9/01 - 14 Scans
    6/10/01 - 38 Scans
    6/11/01 - 22 Scans
    
    Any ideas on what could have sparked this increased scanning?  A new
    utility?  A new vulnerability related to sub7?  New media publicity?
    
    Thanks
    
    Jack E. Obert, GSEC 
    Technical Information Security Officer 
    St. John's Health System 
    



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