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Submission Summary:

Submission details:

Submission received: 30 September 2012, 23:48:10
Processing time: 8 min 1 sec
Submitted sample:

File MD5: 0x130D3D218C83E389F16A627034B88DBC
File SHA-1: 0x8D4AFF100B136956F9C39195E3E69462E9D8B40A
Filesize: 760,320 bytes
Packer info: packed with: UPX [Kaspersky Lab]

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	%Temp%\ex.exe	423,424 bytes	MD5: 0x220643B088EBC3132B3DE883E5E60557 SHA-1: 0xE861869999F92DCFF72A44233676A2A1D2B45C15	(not available)
2	%Temp%\ex2.exe	371,200 bytes	MD5: 0x3D2113CD4333C34092D2D34EBE6AD0E3 SHA-1: 0x0541CC3C12F09135779285BAC14659BA00862AC0	(not available)
3	%Temp%\win.dll	484,352 bytes	MD5: 0xABC93FD49F077AE9244AD9485F3ADC6A SHA-1: 0xCC99D023F6B2CB99619F48BC07B746A3F191F06B	(not available)
4	%Temp%\win2.dll	91,648 bytes	MD5: 0xEA153B26369F1218838A05BB6451D146 SHA-1: 0x7CEFC6C1962C59622655E48EEB742FA11D99590F	(not available)
5	[file and pathname of the sample #1]	760,320 bytes	MD5: 0x130D3D218C83E389F16A627034B88DBC SHA-1: 0x8D4AFF100B136956F9C39195E3E69462E9D8B40A	packed with UPX [Kaspersky Lab]

Note:

%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
[filename of the sample #1]	[file and pathname of the sample #1]	901,120 bytes
ex.exe	%Temp%\ex.exe	454,656 bytes
ex2.exe	%Temp%\ex2.exe	397,312 bytes
[generic host process]	[generic host process filename]	45,056 bytes

Notes:

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

Registry Modifications

The newly created Registry Value is:

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

SystemWin = "rundll32 "%AppData%\win.dll,run""
SystemWin2 = "rundll32 "%AppData%\win2.dll,run""

so that win.dll runs every time Windows starts

so that win2.dll runs every time Windows starts

Other details

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

United Kingdom

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