Need help? Ask the community or hire an expert.
Go to Avira Answers
Virus:Worm/Palevo.DP
Date discovered:03/05/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:111.247 Bytes
MD5 checksum:3634e4477dd564a0736e66362bbeefc9
IVDF version:7.10.07.18 - Monday, May 3, 2010

 General Method of propagation:
   • Messenger


Aliases:
   •  Bitdefender: Worm.P2P.Palevo.DP
   •  Eset: IRC/SdBot


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


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

 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 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: china.dbs**********.com
Port: 2345
Channel: #imb
Nickname: NEW-[USA|00|P|%number%]

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Tuesday, August 10, 2010
Description updated by Petre Galan on Tuesday, August 10, 2010

Back . . . .