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Virus:Worm/Agent.81920.A
Date discovered:16/07/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:80.896 Bytes
MD5 checksum:aee2c1e9467fa483099e673a0f55f4fc
VDF version:7.10.04.21
IVDF version:7.10.09.108 - Friday, July 16, 2010

 General Aliases:
   •  Mcafee: W32/Pushbot
   •  Kaspersky: Backdoor.Win32.IRCBot.pso
   •  Sophos: Mal/Rimecud-D
   •  Bitdefender: Trojan.Generic.4494128
   •  Panda: W32/LoLbot.N.worm
   •  GData: Trojan.Generic.4494128


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


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

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



It deletes the initially executed copy of itself.




It tries to execute the following files:

– Filename:
   • net stop MsMpSvc


– Filename:
   • net1 stop MsMpSvc


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


– Filename:
   • %WINDIR%\jusched.exe


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


– Filename:
   • net stop wuauserv


– Filename:
   • sc config wuauserv start= disabled


– Filename:
   • net1 stop wuauserv

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Java developer Script Browse"="%WINDIR%\jusched.exe"

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   Install\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Java developer Script Browse"="%WINDIR%\jusched.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Java developer Script Browse"="%WINDIR%\jusched.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%\jusched.exe:*:Enabled:Java
      developer Script Browse"

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

Server: 210.170.**********.115
Port: 2345
Channel: #!gf!
Nickname: NEW-[USA|00|P|%number%]

 Stealing It tries to steal the following information:
– Recorded passwords used by the AutoComplete function

– Passwords from the following programs:
   • Mozilla Firefox
   • Internet Explorer

 Miscellaneous Accesses internet resources:
   • http://browseusers.myspace.com/Browse/**********
   • http://200.223.159.82/**********


Mutex:
It creates the following Mutex:
   • Micro Upe

 File details Programming language:
The malware program was written in Delphi.


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

Descrição enviada por Petre Galan em sexta-feira, 25 de março de 2011
Descrição atualizada por Petre Galan em sexta-feira, 25 de março de 2011

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