ThreatExpert Report

Submission Summary:

Submission details:

Submission received: 20 February 2009, 07:18:58
Processing time: 5 min 45 sec
Submitted sample:

File MD5: 0x5C931A410C647169931F65816F491D39
File SHA-1: 0x5042351F429D76646E3E211BBA50A5EE8B5153DB
Filesize: 579,376 bytes

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Registers a 32-bit in-process server DLL.
Registers a Browser Helper Object (Microsoft's Internet Explorer plugin module).

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash
1	%AppData%\Microsoft\Crypto\RSA\S-1-5-21-606747145-764733703-839522115-1003\32bea3b52d38cbdb2a1363329b3137f4_a7bcc1a4-f7a4-4502-8650-8579e607f7f7	77 bytes	MD5: 0x3E4D866D370C5ACA7CC8D593BE1CC092 SHA-1: 0xCCEE7EE465C2327156E9B910E2C50460E89B81A1
2	%Temp%\gewhk1	125 bytes	MD5: 0x7C5F5A68051F6B0C0E9A2AD33C40D415 SHA-1: 0x120865765927A61AF83F02B83DC297EEDE61EC41
3	%Temp%\nsq3.tmp\System.dll	10,240 bytes	MD5: 0x7E3C808299AA2C405DFFA864471DDB7F SHA-1: 0xB5DE7804DD35ED7AFD0C3B59D866F1A0749495E0
4	%System%\nsb4.dll	709,120 bytes	MD5: 0x2F15286DD8035F7D0F59EAB2F1991ED0 SHA-1: 0x91ECBE70A5BFD8AA22F2A2546DE4CA1D3D504F98
5	[file and pathname of the sample #1]	579,376 bytes	MD5: 0x5C931A410C647169931F65816F491D39 SHA-1: 0x5042351F429D76646E3E211BBA50A5EE8B5153DB
6	%System%\undefined-remove.exe	85,229 bytes	MD5: 0x3D8961613D5BA2B44C217A276E5FD0C9 SHA-1: 0x19F53417F3313BE17086D61C10B38A67093D8833

Notes:

%AppData% is a variable that refers to the file system directory that serves as a common repository for application-specific data. A typical path is C:\Documents and Settings\[UserName]\Application Data.
%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
%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).

The following directory was created:

%Temp%\nsq3.tmp

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]	196,608 bytes

The following module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
nsb4.dll	%System%\nsb4.dll	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0xF80000 - 0x1034000

Notes:

%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{200d9568-0877-791a-23d0-b9c9038075d0}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{200d9568-0877-791a-23d0-b9c9038075d0}\InProcServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{200d9568-0877-791a-23d0-b9c9038075d0}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\undefined
HKEY_CURRENT_USER\Software\AppDataLow
HKEY_CURRENT_USER\Software\AppDataLow\241cbbc5-0e78-c5cf-f8ad-1c4799894026

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{200d9568-0877-791a-23d0-b9c9038075d0}\InProcServer32]

(Default) = "%System%\nsb4.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{200d9568-0877-791a-23d0-b9c9038075d0}]

(Default) = "snappyads"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{200d9568-0877-791a-23d0-b9c9038075d0}]

NoExplorer = """"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\undefined]

DisplayName = "Contextual Tool Snappyads"
UninstallString = "%System%\undefined-remove.exe"
NoModify = 0x00000000
NoRepair = 0x00000000
DisplayVersion = "4.6.4.2"

[HKEY_CURRENT_USER\Software\AppDataLow\241cbbc5-0e78-c5cf-f8ad-1c4799894026]

(Default) = ""
e127fa5d = 0x00000000
69890925 = 00 00
daf61a05 = "%22x+1s%7bjk"
96fb80e4 = "%e2%a0%9d%c8%dc%f5%e2%b1%7d%b6%ba%b6%e6Y%96%b4j%14%82%9e%27%96%5e%96u%5b%bd%0f%97G%dc%e3%8a%b6%f9%af%f1%29%c3Z%014%e2%bb%d7%93%29o"
7b3eb581 = "%23%8d%0a%a3%1d%c3%96%bf%60%08%d6%f0%e4%2b%b0P"
1fc2ae09 = 0x48FBF08E
32c0798a = 0x48FBE27E

Other details

The following Host Name was requested from a host database:

snappyads.biz

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
snappyads.biz	0	snappyads.biz	snappyads.biz

The following GET request was made:

smb/install.php?afid=snappyads&user_id=5048ce2b6c6dbac689cdafbd7dfb18d51a7d4447&version=4.6.4.2&keyid=9d6a454690f53bf94c030277e91bfd56b1a386d6

The following HTTP URL was started reading:

http://snappyads.biz/smb/nsi_install.php?inst_result=success&hwid=5048ce2b6c6dbac689cdafbd7dfb18d51a7d4447

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