ThreatExpert Report: Mal/EncPk-HW, Generic Dropper.cx

Submission Summary:

Submission details:

Submission received: 19 May 2009, 08:15:44
Processing time: 9 min 8 sec
Submitted sample:

File MD5: 0xC1BF051DE49B0151117488082F2DE1DD
File SHA-1: 0x21913D2C29A92142113C858E7C1E395EBDDE3AC1
Filesize: 52,224 bytes

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.

Technical Details:

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash
1	[file and pathname of the sample #1]	52,224 bytes	MD5: 0xC1BF051DE49B0151117488082F2DE1DD SHA-1: 0x21913D2C29A92142113C858E7C1E395EBDDE3AC1

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]	61,440 bytes

Other details

The following HTTP URLs were started reading:

http://imageempires.com/perce/80109c6d01ba5400ed1481dd88fced09c8af10707be200e42eb908f06079c9f88e5c5f9804b2a7fec/20c/perce.jpg
http://coolimagepro.com/item/4020bc5df16a6460dd4471bd682ccd69983f2080cb82e0549e99f890502969a85e1cff488462b75ea/301/item.gif
http://portalpics.com/werber/105/216.jpg
http://res-supersoft.com/file.exe

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

http://fwrskljgsklj.com/fff9999.php?aid=0&uid=00cd1a40d41d8cd98f00b204e9800998ecf8427e&os=512
http://fwrskljgsklj.com/eee9999.php?aid=0&uid=00cd1a40d41d8cd98f00b204e9800998ecf8427e&os=512

Downloaded File Summary:

Download details:

Download retrieved: 19 May 2009 08:24:56
Processing time: 9 min 43 sec
Downloaded sample #1:

File MD5: 0x2DB6EDD95282E111E0039B992197B764
File SHA-1: 0x4CB303420CE53A25D5B23FB5A64A4420ED818F16
Filesize: 122,884 bytes
Alias: Mal/EncPk-HW [Sophos]

Downloaded sample #2:

File MD5: 0x40A787392033CD740C5B4FD7D7626072
File SHA-1: 0xC8830A8165CA221EB5EAE43D81259A74BBAE52BE
Filesize: 145,924 bytes
Alias:

Generic Dropper.cx [McAfee]
Mal/EncPk-HW [Sophos]

Downloaded sample #3:

File MD5: 0x608E0A01F539D24CE01E25DEC8198E43
File SHA-1: 0xF5E13C714FAE1F568AE6C8E2BBFB92BCF0D09465
Filesize: 119,300 bytes
Alias:

Generic Dropper.cx [McAfee]
Mal/EncPk-HW [Sophos]

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 risks were identified in the system:

Security Risk	Description
Adware.BHO.GEN	Adware.BHO.GEN is adware that use BHOs to display ads or can be used for malicious purposes like gathering info on your surfing habits. It also has the functionality to download and install further malicious files from remote servers.
Trojan.FakeAlert	Trojan.FakeAlert will hijack the desktop background with an image alerting the user that their computer system has been infected with spyware. It also changes some settings of windows which include:- disabling permissions for the user to change the background image and setting the active desktop to 'show web content'. It is usually installed in conjunction with a rogue anti-spyware application.
Backdoor.Agent	Backdoor.Agent attempts to create backdoors and allows an attacker unauthorized access to the infected machine.
Trojan-Downloader.Renos	Trojan-Downloader.Renos attempts to download certain rogue anti-spyware application.

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\msxml71.dll	134,148 bytes	MD5: 0x4D42E5FE45097D2A302F9E493991338E SHA-1: 0x0887E79E581C06FBB60817E2D4DABB489BA807D3	(not available)
2	[file and pathname of the sample #1]	122,884 bytes	MD5: 0x2DB6EDD95282E111E0039B992197B764 SHA-1: 0x4CB303420CE53A25D5B23FB5A64A4420ED818F16	Mal/EncPk-HW [Sophos]
3	[file and pathname of the sample #2]	145,924 bytes	MD5: 0x40A787392033CD740C5B4FD7D7626072 SHA-1: 0xC8830A8165CA221EB5EAE43D81259A74BBAE52BE	Generic Dropper.cx [McAfee] Mal/EncPk-HW [Sophos]
4	[file and pathname of the sample #3]	119,300 bytes	MD5: 0x608E0A01F539D24CE01E25DEC8198E43 SHA-1: 0xF5E13C714FAE1F568AE6C8E2BBFB92BCF0D09465	Generic Dropper.cx [McAfee] Mal/EncPk-HW [Sophos]
5	%Windir%\Tasks\{5B57CF47-0BFA-43c6-ACF9-3B3653DCADBA}.job	274 bytes	MD5: 0xAD30D683B92F78D02768CB2D7350E798 SHA-1: 0x1AB5AC4F49D5B03C9123612E752EA608B9619363	(not available)
6	%Windir%\Tasks\{783AF354-B514-42d6-970E-3E8BF0A5279C}.job	226 bytes	MD5: 0x8B40D27D7AD832C8754988E4252666F1 SHA-1: 0xF9C63D69C0B469848E3DD272DFA35C40A2417BFC	(not available)

Notes:

%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).
%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

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]	221,184 bytes
[filename of the sample #3]	[file and pathname of the sample #3]	217,088 bytes
[filename of the sample #2]	[file and pathname of the sample #2]	188,416 bytes

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

Module Name	Module Filename	Address Space Details
msxml71.dll	%System%\msxml71.dll	Process name: IEXPLORE.EXE Process filename: %ProgramFiles%\internet explorer\iexplore.exe Address space: 0xF80000 - 0xFCA000

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\{500BCA15-57A7-4eaf-8143-8C619470B13D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}\?.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{500BCA15-57A7-4eaf-8143-8C619470B13D}
HKEY_CURRENT_USER\Software\Cognac
HKEY_CURRENT_USER\Software\ColdWare
HKEY_CURRENT_USER\Software\XML

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\VersionIndependentProgID]

(Default) = "XML.XML"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\TypeLib]

(Default) = "{B6AE55BF-4617-93EF-6EA4-4E52199CA591}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\ProgID]

(Default) = "XML.XML.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}\InprocServer32]

(Default) = "%System%\msxml71.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{500BCA15-57A7-4eaf-8143-8C619470B13D}]

(Default) = "XML Class"
Install = "OK"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{B6AE55BF-4617-93EF-6EA4-4E52199CA591}\?.0]

(Default) = "%System%\msxml71.dll"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CurVer]

(Default) = "XML.XML.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML\CLSID]

(Default) = "{500BCA15-57A7-4eaf-8143-8C619470B13D}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML]

(Default) = "XML Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1\CLSID]

(Default) = "{500BCA15-57A7-4eaf-8143-8C619470B13D}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\XML.XML.1]

(Default) = "XML Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{500BCA15-57A7-4eaf-8143-8C619470B13D}]

(Default) = "XML module"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

Cognac = "[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\Cognac]

s00000002 = "xC7aKZ+O6wyPlq1krRM4sG7m2LFGsYtHjHOagBf10Uk/n4gL8s8xs9LeD5KQVh3/j+XFa0mnr175UElKKyciA2gn6tUEA721Fj4P"
d00000002 = 0x01C9D967
d00000003 = 0x9AE704E0
d00000006 = 0x00000006
d00000006 = 0x00000005

[HKEY_CURRENT_USER\Software\ColdWare]

s00000001 = ""
d00000006 = 0x00000000
d00000000 = 0x01C9D967
d00000001 = 0x8E4ADEA0

[HKEY_CURRENT_USER\Software\XML]

dig3 = 0x00000000
dig16 = 0x00000004
str132 = "z+Xaaugyi4zJWjalT/99yT4dOi1Y0vdNfDSq3zazDIt3B+a8DI9HfdTr74eI4obq7e+q5mQRIYDGWsOzT95LVtcWzB6YXdXTYFyE+bVTjXEKbp33Ax+j64o373zWbutVlSwayX9oJZNw9tkgURfV/NRO5xFxlekLuJnZv6/xzAFGqgRi2KssIR0Q3lGE6Hai"
dig7 = 0x00000000
dig8 = 0x00000000
dig15 = 0x4A16D1E1
dig4 = 0x00000000
dig5 = 0x00000000
dig20 = 0x00000000
dig25 = 0x00000000
dig30 = 0x00000000
dig31 = 0x00000000
dig36 = 0x00000000
dig10 = 0x4A16D1E2
dig21 = 0x0000E6E4

Other details

To mark the presence in the system, the following Mutex objects were created:

yDDVZp8djPzA7SQGlLdL
lpJBlsrAWZI61dr6dQFt
Global\{4A0A574F-EC90-4a3f-8C4E-BA240F5991E9}
NfeAhn02Gc9NqPBvmEc8
Global\{CFBF19B8-27D0-45ea-865F-8BF8F9C77F25}

The following ports were open in the system:

Port	Protocol	Process
1085	TCP	[file and pathname of the sample #1]
1086	TCP	[file and pathname of the sample #1]
1087	TCP	[file and pathname of the sample #1]
1088	TCP	[file and pathname of the sample #1]
1089	TCP	[file and pathname of the sample #1]
1090	TCP	[file and pathname of the sample #1]
1091	TCP	[file and pathname of the sample #1]
1092	TCP	[file and pathname of the sample #1]
1093	TCP	[file and pathname of the sample #1]
1094	TCP	[file and pathname of the sample #1]

The following Host Names were requested from a host database:

protection-manager.com
protect-management.com
searchricerca.com

The following Internet Connections were established:

Server Name	Server Port	Connect as User	Connection Password
last-visit.com	80	(null)	(null)
zone-searching.com	80	(null)	(null)
images-base.com	80	(null)	(null)
imagesrepository.com	80	(null)	(null)
73.71.74.124	80	(null)	(null)
164.122.8.10	80	(null)	(null)
searchzoeken.com	80	(null)	(null)
212.233.25.46	80	(null)	(null)

The following GET requests were made:

cset.php?id=g/7bOKwqwd6bH3a9BvR2gC5DOC QMjuEVJXCr1HPwBvUhUpfkUo9FCofikcbokMC3jvn7vnlOfsSb ApC9D84VB4pDwQzKDIuNNR7WpvFBlUMPZcyrW3O9vf9lli2EaM wb5lhGwWRkdZIg74dRBmaah/YZsBERxLkPueyDpqK/ml4U4Vlw 96siO09AkAzfqTK81K4Kpw4ntiIe0J7ZDQvPKOlWVMEo9vNlcI..
uget.php?id=g/7bOKwqwd6bH3a9BvR2gC5DOC QMjuEVJXCr1HPwBvUhUpfkUo9FCofikcbokMC3jvn7vnlOfsSb ApC9D84VB4pDwQzKDIuNNR7WpvFBlUMPZcyrW3O9vf9lli2EaM wb5lhGwWRkdZIg74dRBmaah/YZsBERxLkPueyDpqK/ml4U4Vlw 96siO09AkAzfqTK81K4Kpw4ntiIe0J7ZDQvPKOlWVMEo9vNlcI..

All content ("Information") contained in this report is the copyrighted work of Threat Expert Ltd and its associated companies ("ThreatExpert") and may not be copied without the express permission of ThreatExpert.

The Information is provided on an "as is" basis. ThreatExpert disclaims all warranties, whether express or implied, to the maximum extent permitted by law, including the implied warranties that the Information is merchantable, of satisfactory quality, accurate, fit for a particular purpose or need, or non-infringing, unless such implied warranties are legally incapable of exclusion. Further, ThreatExpert does not warrant or make any representations regarding the use or the results of the use of the Information in terms of their correctness, accuracy, reliability, or otherwise.