ThreatExpert Report: Trojan.Win32.Vilsel.iop, Mal/EncPk-KP, Packed.Win32.Krap.ah

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Submission Summary:

Submission details:

Submission received: 20 October 2009, 05:23:32
Processing time: 5 min 3 sec
Submitted sample:

File MD5: 0x7D96CE7F588613F0343049918DE70665
File SHA-1: 0xC00A96C4237F2B3FAE05BDE121BF5FEDBAE258FE
Filesize: 21,504 bytes
Alias:

Trojan.Win32.Vilsel.iop [Kaspersky Lab]
Mal/EncPk-KP [Sophos]

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%\lizkavd.exe	159,856 bytes	MD5: 0x7A12938530B38C7D66A92699239C9AA2 SHA-1: 0xFE3CD7105C1206662ECAE7A05B852607C5219E77	Packed.Win32.Krap.ah [Kaspersky Lab]
2	%AppData%\seres.exe %AppData%\svcst.exe [file and pathname of the sample #1]	21,504 bytes	MD5: 0x7D96CE7F588613F0343049918DE70665 SHA-1: 0xC00A96C4237F2B3FAE05BDE121BF5FEDBAE258FE	Trojan.Win32.Vilsel.iop [Kaspersky Lab] Mal/EncPk-KP [Sophos]
3	%Temp%\tmpwr2	564,724 bytes	MD5: 0x3DA03789438F33DA1AE705D7EAD6014C SHA-1: 0x28ACA6B30B92B2F5C3F6EB7192A843AFA0C5240D	(not available)
4	%Temp%\tmpwr3	265,220 bytes	MD5: 0xBB7EFC8B6C5DEE2A0FB7513042FE9B32 SHA-1: 0x773CB0DFE5D1D4689DF0DA84278ECFC8010B8AEB	(not available)
5	%Temp%\tmpwr4	452,100 bytes	MD5: 0x62CCA99D2DC23F29A2CEAE780B4C92D0 SHA-1: 0x50F9F82ECE8A0360CAFC570E4A8006D5D77F2E3B	(not available)
6	%Temp%\tmpwr5	732,212 bytes	MD5: 0x4E0417676D7B372FF314A83F4265C157 SHA-1: 0x79A01D1297D6104C0ECD087866BCBBDA9A2F6957	(not available)
7	%Temp%\tmpwr6	151,428 bytes	MD5: 0xB84B89F326E20110AF6A486BEA85B13D SHA-1: 0x2AB5970963A234C30A786F985DDC8F02C36D15CC	(not available)
8	%Temp%\tmpwr7	1,088,644 bytes	MD5: 0x6C73AB4C610611887E42707902F1319D SHA-1: 0x97DDA778E066B1A0D9D5E07EF2472E8D5C464F05	(not available)

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).

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
seres.exe	%AppData%\seres.exe	45,056 bytes
svcst.exe	%AppData%\svcst.exe	45,056 bytes

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations

The newly created Registry Values are:

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

RunInvalidSignatures = 0x00000001

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations]

LowRiskFileTypes = "zip;.rar;.cab;.txt;.exe;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mov;.mp3;.wav"
SaveZoneInformation = 0x00000001

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

mserv = "%AppData%\seres.exe"
svchost = "%AppData%\svcst.exe"

so that seres.exe runs every time Windows starts

so that svcst.exe runs every time Windows starts

The following Registry Value was modified:

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

CheckExeSignatures =

Other details

The following port was open in the system:

Port	Protocol	Process
1049	UDP	svcst.exe (%AppData%\svcst.exe)

There was registered attempt to establish connection with the remote host. The connection details are:

Remote Host	Port Number
64.237.55.39	80

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

http://orav4abdustorabe.com/files/avp21_d_/_1_._d_
http://orav4abdustorabe.com/files/_AVE_._d_
http://orav4abdustorabe.com/files/_Add_._d_
http://orav4abdustorabe.com/files/_GUI_._d_
http://orav4abdustorabe.com/files/_SC_._d_
http://orav4abdustorabe.com/files/_Upd_._d_

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