Virus:Worm/Rbot.SAD
Date discovered:31/07/2008
Type:Worm
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Medium
Static file:Yes
File size:37.376 Bytes
MD5 checksum:18833b95b2c136e13febd329c84163cc
IVDF version:7.00.05.197 - Thursday, July 31, 2008

 General Method of propagation:
   • Messenger


Aliases:
   •  Mcafee: W32/Sdbot.worm.gen.co
   •  Sophos: Mal/Generic-A
   •  Panda: W32/Oscarbot.XV
   •  Eset: Win32/AutoRun.US
   •  Bitdefender: Trojan.Agent.AJNT


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


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

 Files It copies itself to the following location:
   • %SYSDIR%\service.exe



It deletes the initially executed copy of itself.




It tries to download a file:

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

 Registry One of the following values is added in order to run the process after reboot:

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Windows Taskmanager"="service.exe"



The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   Run]
   • "Windows Taskmanager"="service.exe"



The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
   New value:
   • "Windows Taskmanager"="service.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\
   DisallowRun]
   New value:
   • "1"="MSNCleaner.exe"
   • "2"="avp.exe"
   • "3"="kav.esp.msi"
   • "4"="msconfig.exe"

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

– MSN 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: update.xx**********.com
Port: 1863
Channel: #!m!
Nickname: [N00|USA|%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 Monday, March 8, 2010
Description updated by Petre Galan on Monday, March 8, 2010

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