Submission Summary:

What's been foundSeverity Level
Capability to block security-related software by modifying firewall settings and by disabling security services, such as Windows Update, Norton Autoprotect, Kaspersky Anti-Virus, etc.
Produces outbound traffic.
Downloads/requests other files from Internet.
There were some system executable files modified, which might indicate the presence of a PE-file infector.
Contains characteristics of an identified security risk.

 

Technical Details:

 

Possible Security Risk

Threat CategoryDescription
A virus capable to modify other files by infecting, prepending, or overwriting them them with its own body

 

File System Modifications

#Filename(s)File SizeFile HashAlias
1 %AppData%\Microsoft\Installer\{B53D42E8-872B-430E-82D4-80065A31FCE1}\lpk.dll
[pathname with a string SHARE]\lpk.dll
[pathname with a string SHARE]\lpk.dll
[pathname with a string SHARE]\lpk.dll
%ProgramFiles%\Internet Explorer\Connection Wizard\lpk.dll
%ProgramFiles%\Internet Explorer\lpk.dll
%ProgramFiles%\Messenger\lpk.dll
%ProgramFiles%\MSN\MSNCoreFiles\Install\lpk.dll
%ProgramFiles%\MSN\MSNCoreFiles\Install\MSN9Components\lpk.dll
%ProgramFiles%\MSN\MSNIA\lpk.dll
%ProgramFiles%\MSN\MsnInstaller\lpk.dll
%ProgramFiles%\NetMeeting\lpk.dll
%ProgramFiles%\Outlook Express\lpk.dll
%System%\hra33.dll
62,976 bytes MD5: 0xC3609AD25CD1E6FDC0A989FC30F47166
SHA-1: 0x8F3983DE68C192FA95048C8A1AAD0B902D905806
Trojan.Win32.Patcher [Ikarus]
2 %Windir%\nannaa.exe
[file and pathname of the sample #1]
54,784 bytes MD5: 0x194952B950DBEE1155C2F9F4DAC7F88A
SHA-1: 0xB3C9525CBE21D82E580BD6021785973B006A137C
W32.Virut.CF [Symantec]
Virus.Win32.Virut.ce [Kaspersky Lab]
W32/Virut.n.gen [McAfee]
W32/Scribble-B [Sophos]
Virus:Win32/Virut.BN [Microsoft]
Trojan-Downloader.Win32.Small [Ikarus]

 

Memory Modifications

Process NameProcess FilenameMain Module Size
nannaa.exe%Windir%\nannaa.exe106,496 bytes
[filename of the sample #1][file and pathname of the sample #1]106,496 bytes

Module NameModule FilenameAddress Space Details
hra33.dll%System%\hra33.dllProcess name: nannaa.exe
Process filename: %Windir%\nannaa.exe
Address space: 0x3A0000 - 0x3B3000

Service NameDisplay NameStatusService Filename
00000000Microsoft .Net F"Running"%Windir%\nannaa.exe

 

Registry Modifications

 

Other details

China

PortProtocolProcess
1035TCPnannaa.exe (%Windir%\nannaa.exe)

Remote HostPort Number
qq13065724025.f3322.net2017
eistti.com443
83.133.119.19780

Server NameServer PortConnect as UserConnection Password
127.0.0.280127.0.0.2127.0.0.2
127.0.0.380127.0.0.3127.0.0.3
127.0.0.480127.0.0.4127.0.0.4

 

Outbound traffic (potentially malicious)

 

 

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