ThreatExpert Report: Trojan.Win32.Sasfis.dhlc, Trojan.Win32.Sasfis

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Submission Summary:

Submission details:

Submission received: 21 September 2012, 03:43:28
Processing time: 9 min 4 sec
Submitted sample:

File MD5: 0xEA9BFF2166E600DD34F04DA536E54994
File SHA-1: 0xE3E644DFFCCF99B16ADE7622DEDED4DDE9766ACB
Filesize: 81,832 bytes
Alias:

Trojan.Win32.Sasfis.dhlc [Kaspersky Lab]
Trojan.Win32.Sasfis [Ikarus]

Summary of the findings:

What's been found	Severity Level
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! The following threat category was identified:

Threat Category	Description
	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 file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	81,832 bytes	MD5: 0xEA9BFF2166E600DD34F04DA536E54994 SHA-1: 0xE3E644DFFCCF99B16ADE7622DEDED4DDE9766ACB	Trojan.Win32.Sasfis.dhlc [Kaspersky Lab] Trojan.Win32.Sasfis [Ikarus]

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[generic host process]	[generic host process filename]	20,480 bytes

Note:

[generic host process filename] is a full path filename of [generic host process].

The following modules were loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
[filename of the sample #1]	[file and pathname of the sample #1]	Process name: [generic host process] Process filename: [generic host process filename] Address space: 0x10000000 - 0x10014000
[filename of the sample #1]	[file and pathname of the sample #1]	Process name: [generic host process] Process filename: [generic host process filename] Address space: 0x10000000 - 0x10014000
[filename of the sample #1]	[file and pathname of the sample #1]	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0xD70000 - 0xD84000

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\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\VersionIndependentProgID]

(Default) = "WinsPopBHO.WinsPopAPI"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\TypeLib]

(Default) = "{31C3FB97-CFD9-4745-BE40-1E5F5702635E}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\ProgID]

(Default) = "WinsPopBHO.WinsPopAPI.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}\InprocServer32]

(Default) = "[file and pathname of the sample #1]"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}]

(Default) = "WinsPop Hlp"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\TypeLib]

(Default) = "{31C3FB97-CFD9-4745-BE40-1E5F5702635E}"
Version = "1.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\ProxyStubClsid32]

(Default) = "{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}\ProxyStubClsid]

(Default) = "{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{9CBC618F-898B-46DC-8B67-28D93FE9C7DF}]

(Default) = "IWinsPopAPI"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\0\win32]

(Default) = "[file and pathname of the sample #1]"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\HELPDIR]

(Default) = "%System%\"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0\FLAGS]

(Default) = "0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{31C3FB97-CFD9-4745-BE40-1E5F5702635E}\1.0]

(Default) = "WinsPopAPIClass 1.0 Type Library"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI\CurVer]

(Default) = "WinsPopBHO.WinsPopAPI.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI\CLSID]

(Default) = "{66B39A8A-3134-47b7-85C6-3E7DF7D14586}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI]

(Default) = "WinsPopAPI Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI.1\CLSID]

(Default) = "{66B39A8A-3134-47b7-85C6-3E7DF7D14586}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WinsPopBHO.WinsPopAPI.1]

(Default) = "WinsPopAPI Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{66B39A8A-3134-47b7-85C6-3E7DF7D14586}]

(Default) = "WinsPopAPI Helper"

Other details

Analysis of the file resources indicate the following possible country of origin:

Republic of Korea

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