ThreatExpert Report: Trojan.Alworo, Backdoor.Win32.Phanta.ar, Generic Dropper.yv, TROJ

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Submission Summary:

Submission details:

Submission received: 7 August 2012, 19:37:17
Processing time: 8 min 52 sec
Submitted sample:

File MD5: 0x16B95576A5D626742CC479AAECE01C10
File SHA-1: 0x8F972C92C5A0E2D467DEA4573AAF2204BF41CF9B
Filesize: 84,992 bytes
Alias:

Trojan.Alworo [Symantec]
Backdoor.Win32.Phanta.ar [Kaspersky Lab]
Generic Dropper.yv [McAfee]
TROJ_POPUREB.SMA [Trend Micro]
Troj/Popureb-A [Sophos]
Trojan:Win32/Popureb.E [Microsoft]
Trojan.Win32.Popureb [Ikarus]

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! The following threat categories were identified:

Threat Category	Description
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
	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	%CommonDocuments%\My Videos\PulgFile.log	86 bytes	MD5: 0xB25922C4659CC1ACC8BAC3E6321F77E8 SHA-1: 0x15D6F4E04F67D9E9BB0DCC9485BA72F2032499CF	Troj/PopuCfg-A [Sophos]
2	%CommonDocuments%\My Videos\Vanbit.tmp	57,856 bytes	MD5: 0x1C07A0985FFD37EE064ED0F2D9754EE3 SHA-1: 0x1F9F6B452E67CA1DD70FCA7D86A13B55547C38BE	Backdoor.Win32.Phanta.aq [Kaspersky Lab] Generic Dropper.yv [McAfee] Troj/Popureb-B [Sophos] Trojan:Win32/Popureb.C [Microsoft] Trojan.Win32.Popureb [Ikarus]
3	%DesktopDir%\Internet Explorer.IE	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
4	[file and pathname of the sample #1]	84,992 bytes	MD5: 0x16B95576A5D626742CC479AAECE01C10 SHA-1: 0x8F972C92C5A0E2D467DEA4573AAF2204BF41CF9B	Trojan.Alworo [Symantec] Backdoor.Win32.Phanta.ar [Kaspersky Lab] Generic Dropper.yv [McAfee] TROJ_POPUREB.SMA [Trend Micro] Troj/Popureb-A [Sophos] Trojan:Win32/Popureb.E [Microsoft] Trojan.Win32.Popureb [Ikarus]

Notes:

%CommonDocuments% is a variable that refers to the file system directory that contains documents that are common to all users. A typical paths is C:\Documents and Settings\All Users\Documents.
%DesktopDir% is a variable that refers to the file system directory used to physically store file objects on the desktop. A typical path is C:\Documents and Settings\[UserName]\Desktop.

The following file was deleted:

%System%\drivers\beep.sys

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).

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]	84,992 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}\shell\open
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\shell
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\shell\OpenHomePage
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\shell\OpenHomePage\Command
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.IE
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.JE
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\DefaultIcon
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\shell
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\shell\open
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\shell\open\command
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE\shell
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE\shell\open
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE\shell\open\command
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt\Security
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt\Enum
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt\Enum

The following Registry Keys were deleted:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\DefaultIcon
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\InProcServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\ShellFolder
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\{1f4de370-d627-11d1-ba4f-00a0c91eedba}

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\DefaultIcon]

(Default) = "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\shell\OpenHomePage\Command]

(Default) = "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE "

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\shell\OpenHomePage]

(Default) = "?????(&O)"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command]

(Default) = "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE "

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.IE]

(Default) = "IE"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.JE]

(Default) = "JE"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\shell\open\command]

(Default) = "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE "

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE\DefaultIcon]

(Default) = "shdoclc.dll,0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\IE]

(Default) = "?????"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE\shell\open\command]

(Default) = "%ProgramFiles%\Internet Explorer\IEXPLORE.EXE "

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\JE]

(Default) = "?????"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu]

{871C5380-42A0-1069-A2EA-08002B30309D} = 0x00000002

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

Alg = "C:\alg.exe"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "hello_tt"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT\0000]

Service = "hello_tt"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "hello_tt"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_HELLO_TT]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt\Enum]

0 = "Root\LEGACY_HELLO_TT\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\hello_tt]

Type = 0x00000001
Start = 0x00000003
ErrorControl = 0x00000000
ImagePath = "%System%\hello_tt.sys"
DisplayName = "hello_tt"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "hello_tt"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT\0000]

Service = "hello_tt"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "hello_tt"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_HELLO_TT]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt\Enum]

0 = "Root\LEGACY_HELLO_TT\0000"
Count = 0x00000001
NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt\Security]

Security = 01 00 14 80 90 00 00 00 9C 00 00 00 14 00 00 00 30 00 00 00 02 00 1C 00 01 00 00 00 02 80 14 00 FF 01 0F 00 01 01 00 00 00 00 00 01 00 00 00 00 02 00 60 00 04 00 00 00 00 00 14 00 FD 01 02 00 01 01 00 00 00 00 00 05 12 00 00 00 00 00 18 00 FF 01 0F 0

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\hello_tt]

Type = 0x00000001
Start = 0x00000003
ErrorControl = 0x00000000
ImagePath = "%System%\hello_tt.sys"
DisplayName = "hello_tt"

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

Default_Page_URL = ""

The following Registry Values were deleted:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\ShellFolder]

Attributes = 0x20180000

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\InProcServer32]

(Default) = "%System%\SHELL32.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}\DefaultIcon]

(Default) = "%System%\SHELL32.dll,-135"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1f4de370-d627-11d1-ba4f-00a0c91eedba}]

(Default) = "Computer Search Results Folder"
LocalizedString = "@%System%\SHELL32.dll,-30521"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\DefaultIcon]

(Default) = "%SystemRoot%\explorer.exe,-253"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}\Instance\InitPropertyBag]

InitString = "StartMenuInternet"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{871C5380-42A0-1069-A2EA-08002B30309D}\shell\OpenHomePage\Command]

(Default) = ""%ProgramFiles%\Internet Explorer\iexplore.exe""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\{1f4de370-d627-11d1-ba4f-00a0c91eedba}]

(Default) = "Computer Search Results Folder"

The following Registry Values were modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu]

{871C5380-42A0-1069-A2EA-08002B30309D}.default =

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel]

{871C5380-42A0-1069-A2EA-08002B30309D} =

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

Start Page =

Other details

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

China

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

IE_2011_Mutex

The following Internet download was started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://www.003bzzyb.com/daohao.gif	C:\alg.exe

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