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Virus:TR/Spy.109568.14
Date discovered:20/01/2010
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:109.568 Bytes
MD5 checksum:c233fc38820506102d47e03c3de4362e
VDF version:7.10.01.44
IVDF version:7.10.03.30 - Wednesday, January 20, 2010

 General Method of propagation:
   • Messenger


Aliases:
   •  Kaspersky: Trojan.Win32.Agent.gvmi
   •  Bitdefender: Trojan.Agent.ARGO
   •  Panda: W32/OscarBot.YX.worm
   •  GData: Trojan.Agent.ARGO


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


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

 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:
   • 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"

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

– AIM Messenger
– Skype
– 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: 41.160.14**********.53
Port: 2345
Channel: #!gf!
Nickname: NEW-[USA|00|P|%number%]

 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 MS Visual C++.


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 Friday, April 15, 2011
Description updated by Petre Galan on Friday, April 15, 2011

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