ThreatExpert Report: Trojan.Whenu.C, not-a-virus:AdWare.Win32.SaveNow.ay, Adware-SaveNow..

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Submission Summary:

Submission details:

Submission received: 12 December 2009, 15:35:31
Processing time: 7 min 6 sec
Submitted sample:

File MD5: 0xC9B69DABB9BC8CDDEF3053437E69D4C4
File SHA-1: 0x56DF4033D0F3A91E73ED8BDAA60158C9F7942555
Filesize: 132,096 bytes
Alias:

Trojan.Whenu.C [PCTools]
not-a-virus:AdWare.Win32.SaveNow.ay [Kaspersky Lab]
Adware-SaveNow [McAfee]
Adware:Win32/WhenU.D [Microsoft]
Win-Trojan/Whenu.132096 [AhnLab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A potentially unwanted adware program designed to deliver various advertisements to the users' systems

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	132,096 bytes	MD5: 0xC9B69DABB9BC8CDDEF3053437E69D4C4 SHA-1: 0x56DF4033D0F3A91E73ED8BDAA60158C9F7942555	Trojan.Whenu.C [PCTools] not-a-virus:AdWare.Win32.SaveNow.ay [Kaspersky Lab] Adware-SaveNow [McAfee] Adware:Win32/WhenU.D [Microsoft] Win-Trojan/Whenu.132096 [AhnLab]

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	143,360 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WUSN.1
HKEY_CURRENT_USER\Software\WhenU
HKEY_CURRENT_USER\Software\WhenU\Weather

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WUSN.1]

WUSN_Id = 02 A2 16 20 51 09 35 4F BA 98 88 BA BE BA 56 C9

[HKEY_CURRENT_USER\Software\WhenU\Weather]

InstallTime = "20091212153543"
timeHeartbeat = "20091212233546"
nagCount = "2"
timeLastNag = "20091212153546"
update_url = "http://www.whenudownloads.com/weatherupdate.exe"
timeUpdate = "20091212233546"

Other details

The following port was open in the system:

Port	Protocol	Process
1049	UDP	[file and pathname of the sample #1]

There were registered attempts to establish connection with the remote hosts. The connection details are:

Remote Host	Port Number
66.152.85.200	80
66.152.85.202	80

The data identified by the following URLs was then requested from the remote web server:

http://app.whenu.com/WthrPrefs
http://app.whenu.com/WeatherDB
http://web.whenu.com/heartbeat?program=weather&partner=&id=2016A20209514F35BA9888BABEBA56C9&ver=1.51
http://www.whenudownloads.com/weatherupdate.exe
http://spweather.whenu.com/global.js
http://spweather.whenu.com/global.css
http://spweb.whenu.com/whenushop/wc3_box_clear_bottomleft.gif
http://spweb.whenu.com/whenushop/spacer.gif
http://spweb.whenu.com/whenushop/wc3_box_clear_bottomright.gif

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