ThreatExpert Report: P2P-Worm.Nugg!sd6, P2P-Worm.Win32.Nugg.w, Trojan Horse, P2P-Worm.Win32.Nugg..

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Submission Summary:

Submission details:

Submission received: 10 May 2009, 08:08:59
Processing time: 5 min 43 sec
Submitted sample:

File MD5: 0x8B58C4FD35DC18F104B48E89038BDA9E
File SHA-1: 0x3B09D772883091B3E8AC9EADF5D2AB90EC7A0132
Filesize: 159,955 bytes
Alias:

P2P-Worm.Nugg!sd6 [PCTools]
Trojan Horse [Symantec]
P2P-Worm.Win32.Nugg.w [Kaspersky Lab]
P2P-Worm.Win32.Nugg [Ikarus]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Registers a Winlogon notification package so that the installed module is loaded into the address space of winlogon.exe.
Uses the AppInit_DLLs value in order to install a module that will be loaded into the address space of every running application.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
P2P-Worm.Nugg!sd6	P2P-Worm.Nugg!sd6 is a network-aware worm that attempts to replicate across peer-to-peer networks.

Attention! The following threat categories were identified:

Threat Category	Description
	A network-aware worm that attempts to replicate across the existing network(s)
	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	%AppData%\020000006175b901530C.manifest	13 bytes	MD5: 0xE6EC68259B9A2B2A7C04BC074186B5FE SHA-1: 0x55656CE73CD2D7AD3EA7A0C23AF1D07F143EE28C	(not available)
2	%AppData%\020000006175b901530O.manifest	11 bytes	MD5: 0x82908D032137FFBF20736FCC19217EFA SHA-1: 0x40E083334CE0BC1428E007179810AEDF7276E9B2	(not available)
3	%AppData%\020000006175b901530P.manifest	631 bytes	MD5: 0xED3FABDAD2907E78EB5C06CEFA774E53 SHA-1: 0x8A3F0476F31F96D896DF057B5C76AEE033F6A818	(not available)
4	%AppData%\020000006175b901530S.manifest	11 bytes	MD5: 0xF71D12EA086C28D0AEC2EA20EC3F15D9 SHA-1: 0x70379C4525725655277DA68EFF7DBB2D1F8DD79C	(not available)
5	%Temp%\keygen\file_id.diz	1,762 bytes	MD5: 0xCA11796252FABB989A6478C4BC28F178 SHA-1: 0xC1DE5D1C4657AC794F74066517961FF591E817E3	(not available)
6	%Temp%\keygen\keygen.exe	81,920 bytes	MD5: 0x020A16AED3B837E7C7DA67D70FCC740E SHA-1: 0x4A2150B389B1590E8726124E47ADDF7DBD7B9FB9	P2P-Worm.Nugg!sd6 [PCTools] Backdoor.Trojan [Symantec] P2P-Worm.Win32.Nugg.w [Kaspersky Lab] Generic Downloader.x [McAfee] P2P-Worm.Win32.Nugg [Ikarus] Win-Trojan/Agent.151552.CY [AhnLab] packed with PE_Patch.UPX [Kaspersky Lab]
7	%Temp%\keygen\keygen.nfo	5,106 bytes	MD5: 0x1C874938A8A7A940DEEB011F2EE5946F SHA-1: 0x50D6A03E32AD6A0F345D399C183C18ECA9DE38E7	(not available)
8	%Temp%\setup.exe	299,008 bytes	MD5: 0x78A85B9D8665FAC77A43100F59109143 SHA-1: 0xC616372C70BA1B90C0C6AED388F72E71B97F7F75	P2P-Worm.Nugg!sd6 [PCTools] Trojan Horse [Symantec] P2P-Worm.Win32.Nugg.w [Kaspersky Lab] Downloader-BMN [McAfee] TrojanDownloader:Win32/Tracur.A [Microsoft] P2P-Worm.Win32.Nugg [Ikarus] Win-Trojan/Agent.151552.CY [AhnLab]
9	%System%\cmprops32.dll %System%\cmutil32.dll	135,168 bytes	MD5: 0x94D80E1ED11871B65B2C3022742E7A14 SHA-1: 0xCF5FB9A04861B9108518CB79F35F7C8E49920C24	P2P-Worm.Nugg!sd6 [PCTools] Backdoor.Trojan [Symantec] P2P-Worm.Win32.Nugg.al [Kaspersky Lab] Downloader-BMN [McAfee] Troj/Agent-INP [Sophos] TrojanDownloader:Win32/Tracur.A [Microsoft] P2P-Worm.Win32.Nugg [Ikarus] Win-Trojan/Agent.135168.EJ [AhnLab]
10	[file and pathname of the sample #1]	159,955 bytes	MD5: 0x8B58C4FD35DC18F104B48E89038BDA9E SHA-1: 0x3B09D772883091B3E8AC9EADF5D2AB90EC7A0132	P2P-Worm.Nugg!sd6 [PCTools] Trojan Horse [Symantec] P2P-Worm.Win32.Nugg.w [Kaspersky Lab] P2P-Worm.Win32.Nugg [Ikarus]

Notes:

%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.
%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
%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 directory was created:

%Temp%\keygen

Memory Modifications

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

Module Name	Module Filename	Address Space Details
cmprops32.dll	%System%\cmprops32.dll	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x19D0000 - 0x19F2000
cmutil32.dll	%System%\cmutil32.dll	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x20B0000 - 0x20D2000

Notes:

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

The following system services were modified:

Service Name	Display Name	New Status	Service Filename
ALG	Application Layer Gateway Service	"Stopped"	%System%\alg.exe
SharedAccess	Windows Firewall/Internet Connection Sharing (ICS)	"Stopped"	%System%\svchost.exe -k netsvcs
wscsvc	Security Center	"Stopped"	%System%\svchost.exe -k netsvcs

Registry Modifications

The following Registry Key was created:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\cd1a40530

The newly created Registry Values are:

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

cd1a40 = C0 7C 88 A5 89 D1 C9 01

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\cd1a40530]

DllName = "%System%\cmutil32.dll"
Startup = "EventStartup"

so that cmutil32.dll is installed as a Winlogon notification package

The following Registry Value was modified:

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

AppInit_DLLs = "%System%\cmprops32.dll,%System%\cmutil32.dll"

so that cmprops32.dll runs every time a Windows application starts

Other details

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

DBWinMutex

The following Internet Connections were established:

Server Name	Server Port	Connect as User	Connection Password
85.17.93.190	80	(null)	(null)
nolagtime.com	80	(null)	(null)

The following GET request was made:

conn/?JKV_1QdQRUYYUYOUREOcWbEEReEeQeYbUfbae-6XBB_1PPI-6GF5_1ZEZKWP-6LC6_1Y-gW-gEUQQ-gE-tsDF6K5D_rpX51_rE-t-66FC_1Q_fQ_fQ_fQ_fQ_fQ_fQ_fQ-62BG_1Q-672V_1YRQ-6N8J_1Q-6252_1WQRR-69LV_1-65GZ_1W-6

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