ThreatExpert Report: Trojan.Popuper, Trojan.DL.Zlob.Gen.34, Trojan.Zlob

Submission Summary:

Submission details:

Submission received: 31 December 2007, 11:06:59
Processing time: 3 min 7 sec
Submitted sample:

File MD5: 0x83607671F535796960A7F5F040C57852
Filesize: 33,792 bytes
Alias: Trojan.Popuper [PCTools]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
Registers a 32-bit in-process server DLL.
Registers a Browser Helper Object (Microsoft's Internet Explorer plugin module).
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Trojan.Popuper	Trojan.Popuper hijacks the default Internet Explorer settings and changes your Internet Explorer homepage. It also appears as a security alert notifying users that their PC has been compromised and then downloads rogue antispyware products onto their PC.

Attention! The following threat categories were identified:

Threat Category	Description
	A program that can be used to hijack certain aspects of users' web browser functionality (such as homepage, search page, and security settings)
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\isfmdl.dll	12,800 bytes	MD5: 0x5E60B0E6D57C5D0146A91F77BD8C8528	(not available)
2	%System%\isfmm.exe	7,680 bytes	MD5: 0x0E9F4B070DF4A79E51C2999AB2243F40	Trojan.DL.Zlob.Gen.34 [PCTools] Trojan.Zlob [Symantec]
3	[file and pathname of the sample #1]	33,792 bytes	MD5: 0x83607671F535796960A7F5F040C57852	Trojan.Popuper [PCTools]

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 were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	45,056 bytes
isfmm.exe	%System%\isfmm.exe	20,480 bytes

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

Module Name	Module Filename	Address Space Details
isfmdl.dll	%System%\isfmdl.dll	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0xEB0000 - 0xEB6000

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\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{9034A523-D068-4BE8-A284-9DF278BE776E}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\run
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Search
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{DAED9266-8C28-4C1C-8B58-5C66EFF1D302}

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}\InprocServer32]

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

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}]

xxx = "xxx"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Extensions\{9034A523-D068-4BE8-A284-9DF278BE776E}]

MenuText = "IE Anti-Spyware"
Exec = "http://www.updatesgate.com/redirect.php"
CLSID = "{1FBA04EE-3024-11d2-8F1F-0000F87ABD16}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{69B98C68-D2B8-4A4E-9CB7-E85B6F3A7014}]

(Default) = ""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\explorer\run]

start = "[file and pathname of the sample #1]"

so that [file and pathname of the sample #1] runs every time Windows starts

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Extensions\CmdMapping]

{9034A523-D068-4BE8-A284-9DF278BE776E} = 0x00002001

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{DAED9266-8C28-4C1C-8B58-5C66EFF1D302}]

DisplayName = "Search"
URL = "http://www.asearchgate.com/index.php?b=1&t=0&q={searchTerms}"

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes]

DefaultScope = "{DAED9266-8C28-4C1C-8B58-5C66EFF1D302}"

The following Registry Value was modified:

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Extensions\CmdMapping]

NextId = 0x00002002

Other details

The following Internet Connection was established:

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

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