ThreatExpert Report: Adware-Tuto4PC, AdWare.Agent

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Submission Summary:

Submission details:

Submission received: 13 July 2012, 06:23:38
Processing time: 12 min 10 sec
Submitted sample:

File MD5: 0x17C75B8032A80C54262B2C53A9593117
File SHA-1: 0x25C51A11A2AADC402F93281FA33A747F76ADCA43
Filesize: 3,646,984 bytes
Alias:

Adware-Tuto4PC [McAfee]
AdWare.Agent [Ikarus]

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).

Technical Details:

The new window was created, as shown below:

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File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%AppData%\PCTuto\PCTuto\autoupdater.exe	662,376 bytes	MD5: 0x5417EA0D9C326F14D0590F7DE78E2E05 SHA-1: 0x8476DA2E708252BD9A2F78CD0B80A55404DC1A63	(not available)
2	%AppData%\PCTuto\PCTuto\UpdatePCTuto.exe	768,872 bytes	MD5: 0xE6379A0E70E64DD7E9A29048C22DDD40 SHA-1: 0x8138AA0ADAE37C077A9A01E416EE9D89760B4754	(not available)
3	%AppData%\PCTuto\PCTuto\user_config.cyp	216 bytes	MD5: 0xECF55AD510F1A2ADDEECDE4462263D1F SHA-1: 0x7621386E93B8D3548CA9BADE8CA543949CA38FDD	(not available)
4	%AppData%\PCTuto\PCTuto\confmedia.cyp %ProgramFiles%\PCTuto\confmedia.cyp	2,712 bytes	MD5: 0x60E9F80E46832C92E348637401C04ECA SHA-1: 0xEBB640B779A5AF293E6FDD7736F89DEF64FAB347	(not available)
5	%AppData%\PCTuto\PCTuto\user.cyp	152 bytes	MD5: 0xBB691B63724F95E6E758EA8520CEFD9E SHA-1: 0xFE3042DC01691D28386C930C35C212B8AA834408	(not available)
6	%Temp%\dd_vcredistUI7D23.txt	1,060 bytes	MD5: 0xE7EF4C72DC0E208FDC6413908599C06D SHA-1: 0x6392B4BF14523288B7BB90B4CB6063FFCCFF801D	(not available)
7	%Temp%\ins8.tmp	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
8	%ProgramFiles%\PCTuto\pctuto.exe	981,864 bytes	MD5: 0x1446E424BA387578C49DA06F70E1D161 SHA-1: 0xF89DEC1D301941C61F6E278BECE6AC27C8B10778	AdWare.Agent [Ikarus]
9	%ProgramFiles%\PCTuto\pctutoBHO.dll	228,200 bytes	MD5: 0x0B30502E104E61006530EDC3668A0E96 SHA-1: 0xC14D410BA99F0EEB3187D924EC82EE4692AB2449	(not available)
10	%ProgramFiles%\PCTuto\unins000.dat	10,532 bytes	MD5: 0xE835230C3A562E3233A64B280D893654 SHA-1: 0x9A8BC42FBA2BB816D9715D30AE6E5C0CD88C6A69	(not available)
11	%ProgramFiles%\PCTuto\unins000.exe	1,180,625 bytes	MD5: 0xB2676D3DE7AFE48FC95B694D35C2F69D SHA-1: 0x4BA20C56A7E11320BDE395A50B69CC7CD064C843	(not available)
12	[file and pathname of the sample #1]	3,646,984 bytes	MD5: 0x17C75B8032A80C54262B2C53A9593117 SHA-1: 0x25C51A11A2AADC402F93281FA33A747F76ADCA43	Adware-Tuto4PC [McAfee] AdWare.Agent [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.
%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.
%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).

The following directories were created:

%AppData%\PCTuto
%AppData%\PCTuto\PCTuto
%ProgramFiles%\PCTuto

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
webinstall.exe	%Temp%\is-UTPPR.tmp\PCTuto\webinstall.exe	1,077,248 bytes
autoupdater.exe	%AppData%\pctuto\pctuto\autoupdater.exe	675,840 bytes
setup_pctuto_1_0_fr.tmp	%Temp%\is-FKIG8.tmp\setup_pctuto_1_0_fr.tmp	1,269,760 bytes
setup_pctuto_1_0_fr.exe	%Temp%\is-UTPPR.tmp\PCTuto\setup_pctuto_1_0_fr.exe	192,512 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	192,512 bytes
[filename of the sample #1 without extension].tmp	%Temp%\is-OB648.tmp\[filename of the sample #1 without extension].tmp	1,269,760 bytes
pctuto.exe	%ProgramFiles%\PCTuto\pctuto.exe	995,328 bytes
install.exe	c:\44d7580e363fb906296a27af7e\install.exe	585,728 bytes
updatepctuto.exe	%AppData%\pctuto\pctuto\updatepctuto.exe	778,240 bytes
[generic host process]	[generic host process filename]	20,480 bytes
derniere_etape.exe	%Temp%\is-UTPPR.tmp\PCTuto\derniere_etape.exe	348,160 bytes

Notes:

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

Registry Modifications

The following Registry Keys were created:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\PCTutoBHO.DLL
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{759F1421-4D31-4c1f-8C51-E4956A037676}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PCTuto_is1
HKEY_LOCAL_MACHINE\SOFTWARE\PCTuto
HKEY_LOCAL_MACHINE\SOFTWARE\PCTuto\PCTuto
HKEY_CURRENT_USER\Software\PCTuto
HKEY_CURRENT_USER\Software\PCTuto\UpdatePCTuto

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\PCTutoBHO.DLL]

AppID = "{759F1421-4D31-4c1f-8C51-E4956A037676}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{759F1421-4D31-4c1f-8C51-E4956A037676}]

(Default) = "PCTutoBHO"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\VersionIndependentProgID]

(Default) = "PCTutoBHO.PCTBHO"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\TypeLib]

(Default) = "{{0BF73E27-2734-4f7b-925A-4BBB1457F5FA}}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\ProgID]

(Default) = "PCTutoBHO.PCTBHO.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}\InprocServer32]

(Default) = "%ProgramFiles%\PCTuto\pctutoBHO.dll"
ThreadingModel = "Apartment"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}]

(Default) = "PCTBHO Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\TypeLib]

(Default) = "{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}"
Version = "1.0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\ProxyStubClsid32]

(Default) = "{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}\ProxyStubClsid]

(Default) = "{00020424-0000-0000-C000-000000000046}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{E2ED56B6-35FC-4484-9530-EC87FB458E78}]

(Default) = "IPCTBHO"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\0\win32]

(Default) = "%ProgramFiles%\PCTuto\pctutoBHO.dll"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\HELPDIR]

(Default) = ""

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0\FLAGS]

(Default) = "0"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{0BF73E27-2734-4F7B-925A-4BBB1457F5FA}\1.0]

(Default) = "PCTEngineBHO 1.0 Type Library"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO\CurVer]

(Default) = "PCTutoBHO.PCTBHO.1"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO\CLSID]

(Default) = "{293A63F7-C3B6-423a-9845-901AC0A7EE6E}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO]

(Default) = "PCTBHO Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO.1\CLSID]

(Default) = "{293A63F7-C3B6-423a-9845-901AC0A7EE6E}"

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\PCTutoBHO.PCTBHO.1]

(Default) = "PCTBHO Class"

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{293A63F7-C3B6-423a-9845-901AC0A7EE6E}]

(Default) = "PCTBHO"
NoExplorer = 0x00000001

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

PCTuto = "%ProgramFiles%\PCTuto\pctuto.exe"
autoupdater = "%AppData%\PCTuto\PCTuto\autoupdater.exe"

so that pctuto.exe runs every time Windows starts

so that autoupdater.exe runs every time Windows starts

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\PCTuto_is1]

Inno Setup: Setup Version = "5.4.0 (u)"
Inno Setup: App Path = "%ProgramFiles%\PCTuto"
InstallLocation = "%ProgramFiles%\PCTuto\"
Inno Setup: Icon Group = "PCTuto"
Inno Setup: User = "%UserName%"
Inno Setup: Language = "fr"
DisplayName = "PCTuto 1.0"
UninstallString = ""%ProgramFiles%\PCTuto\unins000.exe""
QuietUninstallString = ""%ProgramFiles%\PCTuto\unins000.exe" /SILENT"
Publisher = "PCTuto"
URLInfoAbout = "http://www.pctuto.com"
HelpLink = "http://www.pctuto.com"
URLUpdateInfo = "http://www.pctuto.com"
NoModify = 0x00000001
NoRepair = 0x00000001
InstallDate = "20120713"

[HKEY_LOCAL_MACHINE\SOFTWARE\PCTuto\PCTuto]

PathInstall = "%ProgramFiles%\PCTuto"

[HKEY_LOCAL_MACHINE\SOFTWARE\PCTuto]

HostGUID = "A7840CF2-3055-4854-B8ED-9B75DDA129D2"

[HKEY_CURRENT_USER\Software\PCTuto\UpdatePCTuto]

MainDir = "%AppData%\PCTuto\PCTuto"
Version = "1.0.0.0"
SoftwareDir = "%AppData%\PCTuto\PCTuto\Software"

[HKEY_CURRENT_USER\Software\PCTuto]

LCID = 0x00000409

Other details

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

	France
	Netherlands

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

SetupWatson_Mutex_Name
PCTUTO
_!SHMSFTHISTORY!_

The following Internet Connections were established:

Server Name	Server Port	Connect as User	Connection Password
prof.pctuto.com	80	(null)	(null)
log.pctuto.com	80	(null)	(null)
prof.pctuto.com	80	prof.pctuto.com	prof.pctuto.com
ads.regiedepub.com	80	(null)	(null)

The following GET requests were made:

cgi-bin/advert/getads.cgi?x_dp_id=317
cgi-bin/advert/index.jpg

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