ADSPY/Look2Me.AB.67 - Adware / Spyware

See also

Summary

Full description

Statistics

Virus:	ADSPY/Look2Me.AB.67
Date discovered:	10/10/2005
Type:	Trojan
Subtype:	Adware
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	578.560 Bytes
MD5 checksum:	242a20bae9cf9cb816a447150378c02d
VDF version:	6.32.00.72 - Mon, 10 Oct 2005 14:33 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Kaspersky: not-a-virus:AdWare.Win32.Look2Me.ab
   • VirusBuster: trojan Adware.Look2Me.P
   • Bitdefender: Trojan.Canbede.L

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

Side effects:
   • Blocks access to certain websites
   • Downloads files
   • Drops malicious files
   • Registry modification
   • Steals information

Files The following files are created:

– %SYSDIR%\%random character string%.dll Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: ADSPY/Look2Me.AB.76

– %SYSDIR%\%random character string%.dll Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: ADSPY/Look2Me.AB.76

– %SYSDIR%\guard.tmp Detected as: ADSPY/Look2Me.AB.76

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

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\
   %random words%]
   • "Shutdown" = "WinShutdown"
   • "Logoff" = "WinLogoff"
   • "Logon" = "WinLogon"
   • "Impersonate" = dword:00000000
   • "DllName" = "%sysdir%\%malware dll%"
   • "Asynchronous" = dword:00000000

– [HKLM\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\
   Approved]
   • "%generated CLSID%" = ""

– [HKCR\CLSID\%generated CLSID%]
   • "IDEx" = "ADDR"
   • "@" = ""

– [HKCR\CLSID\%generated CLSID%\Implemented Categories]
   • "@" = ""

– [HKCR\CLSID\%generated CLSID%\Implemented Categories\
   {00021492-0000-0000-C000-000000000046}]
   • "@" = ""

– [HKCR\CLSID\%generated CLSID%\InprocServer32]
   • "ThreadingModel" = "Apartment"
   • "@" = "%sysdir%\%malware dll%"

The following registry key is changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Streams\
   Desktop]
   Old value:
   • "Taskbar" = %user defined settings%
   New value:
   • "Taskbar" = %hex values%

Hosts Sometimes it may happen that the host file becomes modified as follows:

– In this case already existing entries remain unmodified.

– Access to the following domain is effectively blocked:
• %gathered from the internet%

Backdoor Contact server:
One of the following:
   • www.ad-w-a-r-e.com/AD/**********
   • www.a-d-w-a-r-e.com/AD/**********

As a result it may send information and remote control could be provided. This is done via the HTTP GET request on a PHP script.

Sends information about:
    • Current malware status

Remote control capabilities:
    • Download file
    • Edit registry
    • Visit a website

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.

See a brief description here.

Description inserted by Daniel Constantin on Fri, 03 Mar 2006 12:14 (GMT+1)
Description updated by Daniel Constantin on Fri, 03 Mar 2006 16:43 (GMT+1)

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