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Virus:TR/Agent.ayp
Date discovered:27/08/2007
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Medium
Damage Potential:Medium
Static file:Yes
File size:102.400 Bytes
MD5 checksum:fc69e6109e881ea62b98b68597033b86
VDF version:6.39.01.46
IVDF version:6.39.01.48 - Monday, August 27, 2007

 General Methods of propagation:
   • Autorun feature
   • Messenger
   • Peer to Peer


Aliases:
   •  Sophos: W32/Autorun-BKS
   •  Bitdefender: Trojan.Generic.KD.32643
   •  Panda: W32/P2Pworm.JK
   •  Eset: Win32/AutoRun.IRCBot.FC


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%\Sontiwin.exe
   • %drive%\Sontiwin.exe



The following file is created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%




It tries to execute the following files:

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


– Filename:
   • %WINDIR%\Sontiwin.exe

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\
   Install\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Ci Servs"="Sontiwin.exe"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Ci Servs"="Sontiwin.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%"="%executed file%:*:Enabled:Ci Servs"



The following registry key is changed:

– [HKLM\SYSTEM\CurrentControlSet\Hardware Profiles\0001\Software\
   Microsoft\windows\CurrentVersion\Internet Settings]
   New value:
   • "ProxyEnable"=dword:0x00000000

 P2P In order to infect other systems in the Peer to Peer network community the following action is performed:   It searches for directories that contain one of the following substrings:
   • winmx\shared\
   • tesla\files\
   • limewire\shared\
   • morpheus\my shared folder\
   • emule\incoming\
   • edonkey2000\incoming\
   • bearshare\shared\
   • grokster\my grokster\
   • icq\shared folder\
   • kazaa lite k++\my shared folder\
   • kazaa lite\my shared folder\
   • kazaa\my shared folder\

   If successful, the following files are created:
   • porno.scr; headjobs.scr; ilovetofuck.scr;
      FREEPORN.exe,fuckshitcunt.scr; Autoloader.exe; Wireshark.exe;
      DDOSPING.exe; ScreenMelter.exe; How-to-make-money.exe; Ebooks.exe;
      WildHorneyTeens.scr; RapidsharePREMIUM.exe; LimeWireCrack.exe;
      Porno.MPEG.exe; image.scr; VistaUltimate-Crack.exe; paris-hilton.scr;
      MSNHacks.exe; YahooCracker.exe; HotmailHacker.exe


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

– AIM Messenger
– Windows 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: irc.met**********.com
Port: 6567
Channel: #update1#
Nickname: [SI|USA|00|P|%number%]

 Miscellaneous Mutex:
It creates the following Mutex:
   • Tansie

 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.

說明撰寫者 Petre Galan 開啟 2011年2月23日星期三
說明更新者 Petre Galan 開啟 2011年2月23日星期三

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