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Virus:Worm/IrcBot.104591.1
Date discovered:05/05/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:104.591 Bytes
MD5 checksum:f112e38fa3242d5b7b1b4829069a129f
IVDF version:7.10.07.41 - Wednesday, May 5, 2010

 General Method of propagation:
    Messenger


Aliases:
   •  Panda: W32/OscarBot.YH.worm
   •  Eset: IRC/SdBot
   •  Bitdefender: Worm.P2P.Palevo.DV


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads malicious files
   • Drops malicious files
   • Lowers security settings
   • Registry modification
   • Third party control

 Files It copies itself to the following locations:
   • %WINDIR%\infocard.exe
   • %WINDIR%\infocard.exb



It deletes the initially executed copy of itself.



The following files are created:

%WINDIR%\mds.sys
%WINDIR%\mdt.sys
%WINDIR%\winbrd.jpg



It tries to download some files:

The location is the following:
   • http://get.freeart1cile.com/**********


The location is the following:
   • http://browseusers.myspace.com/Browse/**********




It tries to executes the following files:

Filename:
   • net stop MsMpSvc


Filename:
   • net1 stop MsMpSvc


Filename:
   • net stop wuauserv


Filename:
   • net1 stop wuauserv


Filename:
   • sc config wuauserv start= disabled


Filename:
   • netsh firewall add allowedprogram 1.exe 1 ENABLE


Filename:
   • "%WINDIR%\infocard.exe"


Filename:
   • explorer.exe http://browseusers.myspace.com/Browse/Browse.aspx

 Registry The following registry keys are added in order to run the processes after reboot:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Firewall Administrating"="%WINDIR%\infocard.exe"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   Install\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Firewall Administrating"="%WINDIR%\infocard.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Firewall Administrating"="%WINDIR%\infocard.exe"



It creates the following entry in order to bypass the Windows XP firewall:

[HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\
   FirewallPolicy\StandardProfile\AuthorizedApplications\List]
   • "%executed file%"="%WINDIR%\infocard.exe:*:Enabled:Firewall
      Administrating"

 Messenger It is spreading via Messenger. The characteristics are described below:

 Yahoo Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

 IRC To deliver system information and to provide remote control it connects to the following IRC Server:

Server: support.del**********.net
Port: 1234
Channel: #!help!
Nickname: NEW-[USA|00|P|%number%]

Descrição enviada por Petre Galan em segunda-feira, 28 de junho de 2010
Descrição atualizada por Petre Galan em segunda-feira, 28 de junho de 2010

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