ThreatExpert Report: Trojan.Gen, New Malware.y, Trojan-Clicker.AYQO, Generic BackDoor.se!bat..

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Submission Summary:

Submission details:

Submission received: 13 July 2012, 21:08:14
Processing time: 13 min 34 sec
Submitted sample:

File MD5: 0x4CDB3437B222F4560BF7FEF862132104
File SHA-1: 0x8A0FF533CB02EB66DF6FB59B33B1331E54B833BC
Filesize: 94,208 bytes
Alias:

Trojan.Gen [Symantec]
New Malware.y [McAfee]
Trojan-Clicker.AYQO [Ikarus]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
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 files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\msstart.exe	94,208 bytes	MD5: 0x4CDB3437B222F4560BF7FEF862132104 SHA-1: 0x8A0FF533CB02EB66DF6FB59B33B1331E54B833BC	Trojan.Gen [Symantec] New Malware.y [McAfee] Trojan-Clicker.AYQO [Ikarus]
2	%AppData%\Plug.bat	110 bytes	MD5: 0x65665C18A13B28554B34EBF4C5F75987 SHA-1: 0x1EFF465A0CF636ADAD3688A6ED77C17893BF0353	Generic BackDoor.se!bat [McAfee] Troj/Runstub-A [Sophos]

Note:

%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.

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
msstart.exe	%AppData%\msstart.exe	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	102,400 bytes
[generic host process]	[generic host process filename]	45,056 bytes

Notes:

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

There was a new service created in the system:

Service Name	Display Name	Status	Service Filename
Mshost Manager	Mshost Manager	"Stopped"	%AppData%\Plug.bat

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\mdlwe42dgd
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Mshost Manager
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Mshost Manager\Security
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mshost Manager
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mshost Manager\Security
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

The following Registry Keys were deleted:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\NOHIDDEN
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main]

Use FormSuggest = "yes"

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

Mshost Manager = "%AppData%\msstart.exe"

so that msstart.exe runs every time Windows starts

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug]

Auto = 0x00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\mdlwe42dgd]

mdlwe42dgdpath = "%AppData%\"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Mshost Manager\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\Mshost Manager]

Type = 0x00000110
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%AppData%\Plug.bat"
DisplayName = "Mshost Manager"
ObjectName = "LocalSystem"
Description = "Provides network host signaling and local traffic control setup functionality for network programs and control applets."

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Mshost Manager\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\Mshost Manager]

Type = 0x00000110
Start = 0x00000002
ErrorControl = 0x00000000
ImagePath = "%AppData%\Plug.bat"
DisplayName = "Mshost Manager"
ObjectName = "LocalSystem"
Description = "Provides network host signaling and local traffic control setup functionality for network programs and control applets."

[HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\Main]

Use FormSuggest = "yes"
DisableScriptDebuggerIE = "yes"
Error Dlg Displayed On Every Error = "no"

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]

Hidden = 0x00000002
ShowSuperHidden = 0x00000000
SuperHidden = 0x00000001

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

WarnonBadCertRecving = 0x00000000
CertificateRevocation = 0x00000000
WarnonZoneCrossing = 0x00000000
WarnOnPostRedirect = 0x00000000

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows NT\CurrentVersion\Windows]

win = "%AppData%\msstart.exe"
init = "%AppData%\msstart.exe"

so that msstart.exe runs every time Windows starts

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

Use FormSuggest = "yes"
DisableScriptDebuggerIE = "yes"
Error Dlg Displayed On Every Error = "no"

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings]

WarnonBadCertRecving = 0x00000000
CertificateRevocation = 0x00000000
WarnonZoneCrossing = 0x00000000
WarnOnPostRedirect = 0x00000000

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

win = "%AppData%\msstart.exe"
init = "%AppData%\msstart.exe"

so that msstart.exe runs every time Windows starts

The following Registry Values were deleted:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL]

RegPath = "Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced"
Text = "@shell32.dll,-30500"
Type = "radio"
CheckedValue = 0x00000001
ValueName = "Hidden"
DefaultValue = 0x00000002
HKeyRoot = 0x80000001
HelpID = "shell.hlp#51105"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\NOHIDDEN]

RegPath = "Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced"
Text = "@shell32.dll,-30501"
Type = "radio"
CheckedValue = 0x00000002
ValueName = "Hidden"
DefaultValue = 0x00000002
HKeyRoot = 0x80000001
HelpID = "shell.hlp#51104"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden]

Text = "@shell32.dll,-30499"
Type = "group"
Bitmap = "%System%\SHELL32.dll,4"
HelpID = "shell.hlp#51131"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug]

Auto = "1"

The following Registry Values were modified:

[HKEY_USERS\.DEFAULT\AppEvents\Schemes\Apps\Explorer\Navigating\.Current]

(Default) =

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]

AppData =
Cookies =
Cache =
History =

[HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]

1601 =

[HKEY_CURRENT_USER\AppEvents\Schemes\Apps\Explorer\Navigating\.Current]

(Default) =

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3]

1601 =

Other details

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

Form1fho102
reghdcs
Form1fho101

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

http://www.zzxml.com/p6.asp?MAC=&Publicer=tr2

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