ThreatExpert Report: Adware.WhenU_SaveNow, not-a-virus:AdWare.Win32.SaveNow.bc, Adware-SaveNow

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Submission Summary:

Submission details:

Submission received: 9 March 2008, 12:59:23
Processing time: 3 min 12 sec
Submitted sample:

File MD5: 0x990DB24D6CA4A4D96FCAA3EB94275D72
File SHA-1: 0xD8D62B4D3DF4803974E518E9E33A8B24CDC08EED
Filesize: 365,120 bytes
Alias:

Adware.WhenU_SaveNow [PCTools]
not-a-virus:AdWare.Win32.SaveNow.bc [Kaspersky Lab]
Adware-SaveNow [McAfee]

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! Characteristics of the following security risks were identified in the system:

Security Risk	Description
Adware.WhenU_SaveNow	SaveNow shows targeted pop-up advertisements and coupons based on user's Internet surfing habits. It is usually distributed with other third party software such as BearShare.
Adware.Component.WhenU	Common Components shared between WhenU products like ClockSync, SaveNow, SideFinder and WeatherCast.

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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	365,120 bytes	MD5: 0x990DB24D6CA4A4D96FCAA3EB94275D72 SHA-1: 0xD8D62B4D3DF4803974E518E9E33A8B24CDC08EED	Adware.WhenU_SaveNow [PCTools] not-a-virus:AdWare.Win32.SaveNow.bc [Kaspersky Lab] Adware-SaveNow [McAfee]
2	%System%\saveupdate.exe	125 bytes	MD5: 0x7C5F5A68051F6B0C0E9A2AD33C40D415 SHA-1: 0x120865765927A61AF83F02B83DC297EEDE61EC41	(not available)

Note:

%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

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]	376,832 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WUSN.1
HKEY_LOCAL_MACHINE\SOFTWARE\WhenUSave

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WUSN.1]

WUSN_Id = DE A3 7A 04 32 48 C3 4B A0 93 1E 62 2F 97 A8 B5

[HKEY_LOCAL_MACHINE\SOFTWARE\WhenUSave]

Version = "2.64"
db_local_update = "20080107231500"

Other details

To mark the presence in the system, the following Mutex object was created:

WhenU_WhenUSave_SharedMutex

The following port was open in the system:

Port	Protocol	Process
1037	UDP	[file and pathname of the sample #1]

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
web.whenu.com	80	(null)	(null)

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