ThreatExpert Report: Trojan-Dropper.Win32.Daws.apqk, Generic FakeAlert.ama, Mal/EncPk-ACU..

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Submission Summary:

Submission details:

Submission received: 26 April 2012, 04:45:49
Processing time: 8 min 49 sec
Submitted sample:

File MD5: 0xFC36367717853E771D13CE7DB43CCC05
File SHA-1: 0xFB71EB2A283DE508894922B232A693CABC0875FC
Filesize: 116,736 bytes
Alias:

Trojan-Dropper.Win32.Daws.apqk [Kaspersky Lab]
Generic FakeAlert.ama [McAfee]
Mal/EncPk-ACU [Sophos]
Spammer:Win32/Tedroo.A [Microsoft]
Trojan-PWS.Win32.Tepfer [Ikarus]

Summary of the findings:

What's been found	Severity Level
Capability to send out email message(s) with the built-in SMTP client engine.
Contains characteristics a SPAM bot, backdoor trojan, and a rootkit. The backdoor component allows the remote hacker to download/install additional components and instruct the bot to launch massive SPAM attacks from the compromised system.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat categories were identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A hacktool that could be used by attackers to break into a system

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\drivers\win32x.sys	12,544 bytes	MD5: 0xF60F2D932B43B5FF7684C2D28AE0193D SHA-1: 0xB0E4DEFCD577F611173FC570E92E431A23DDD440	Hacktool.Rootkit [Symantec] Trojan-Mailfinder.Win32.Agent.th [Kaspersky Lab] Generic Spy.e [McAfee] Troj/Agent-IXW [Sophos] Trojan:Win32/Trafog!rts [Microsoft] Trojan-Mailfinder [Ikarus] Win-Trojan/Agent.12544.D [AhnLab]
2	[file and pathname of the sample #1]	116,736 bytes	MD5: 0xFC36367717853E771D13CE7DB43CCC05 SHA-1: 0xFB71EB2A283DE508894922B232A693CABC0875FC	Trojan-Dropper.Win32.Daws.apqk [Kaspersky Lab] Generic FakeAlert.ama [McAfee] Mal/EncPk-ACU [Sophos] Spammer:Win32/Tedroo.A [Microsoft] Trojan-PWS.Win32.Tepfer [Ikarus]
3	%System%\win32x.exe	24,576 bytes	MD5: 0x39B1FFB03C2296323832ACBAE50D2AFF SHA-1: 0xE5AEDCBE25A97C89101F1F3860FF846E94D70445	(not available)

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).

The following file was deleted:

%System%\userinit.exe

Memory Modifications

There was a new memory page created in the address space of the system process(es):

Process Name	Process Filename	Allocated Size
explorer.exe	%Windir%\explorer.exe	36,864 bytes

Notes:

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

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X\0000
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X\0000\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\win32x
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\win32x\Security

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "win32x"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X\0000]

Service = "win32x"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "win32x"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_WIN32X]

NextInstance = 0x00000001

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X\0000\Control]

*NewlyCreated* = 0x00000000
ActiveService = "win32x"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X\0000]

Service = "win32x"
Legacy = 0x00000001
ConfigFlags = 0x00000000
Class = "LegacyDriver"
ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
DeviceDesc = "win32x"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WIN32X]

NextInstance = 0x00000001

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

host = "78.159.105.142"
id = "265828036534"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\win32x\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\win32x]

Type = 0x00000001
Start = 0x00000003
ErrorControl = 0x00000000
ImagePath = "%System%\drivers\win32x.sys"
DisplayName = "win32x"

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