Virus:BDS/Bandok.R.2
Date discovered:20/12/2005
Type:Backdoor Server
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:20.480 Bytes
MD5 checksum:4A69364DF3EA6AF14FCEAFA910C2502B
VDF version:6.33.00.25

 General Method of propagation:
   • No own spreading routine


Alias:
   •  Kaspersky: Backdoor.Win32.Bandok.r


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Registry modification
   • Steals information
   • Third party control

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



It deletes the following file:
   • c:\ali.html

 Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
   • "*none"="%SYSDIR%\msnmsgr.exe"



The following registry keys are added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion]
   • "bndkrt"="1648|msnmsgr.exe|none|1930|x|"

– [HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\
   {C6AB07ND-ADF3-4F02-0EE5-A156BTF-8AZ9}]
   • "StubPath"="%SYSDIR%\msnmsgr.exe"

 Backdoor Contact server:
The following:
   • **********.servemp3.com

As a result it may send information and remote control could be provided.

Sends information about:
    • Cached passwords
    • Information about running processes


Remote control capabilities:
    • Delete file
    • Directory listing
    • Download file
    • Edit file
    • Execute file
    • Kill process
    • Perform port redirection
    • Start keylog
    • Upload file
    • Visit a website

 Injection – It injects itself into a process.

    Process name:
   • iexplore.exe

   If successful, the malware process terminates while the injected part remains active.

 Miscellaneous Mutex:
It creates the following Mutex:
   • bandook13

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

Description inserted by Andrei Gherman on Tuesday, December 20, 2005
Description updated by Andrei Gherman on Tuesday, December 20, 2005

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