ThreatExpert Report: Downloader-CUJ

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Submission Summary:

Submission details:

Submission received: 6 September 2012, 02:45:26
Processing time: 7 min 39 sec
Submitted sample:

File MD5: 0xCB09E1DABEEC573B87097DF6C5AA4BA2
File SHA-1: 0x3672F4D94F39B56D9156A69DAA740BFF4743B3BF
Filesize: 421,376 bytes

Technical Details:

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash
1	[file and pathname of the sample #1]	421,376 bytes	MD5: 0xCB09E1DABEEC573B87097DF6C5AA4BA2 SHA-1: 0x3672F4D94F39B56D9156A69DAA740BFF4743B3BF

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[generic host process]	[generic host process filename]	20,480 bytes
svchosvt.exe	%Temp%\svchosvt.exe	118,784 bytes

Notes:

[generic host process filename] is a full path filename of [generic host process].
%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 module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
[filename of the sample #1]	[file and pathname of the sample #1]	Process name: [generic host process] Process filename: [generic host process filename] Address space: 0xB10000 - 0xB7D000

Other details

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

China

The following Host Name was requested from a host database:

192.5.5.241

The following Internet download was started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://download.freeehostian.com/g/pfg.exe	%Temp%\init.exe

Downloaded File Summary:

Download details:

Download retrieved: 6 September 2012 02:53:05
Processing time: 7 min 39 sec
Downloaded sample:

File MD5: 0x4541E62597FE9DD1B5BE02EF1C327FD6
File SHA-1: 0x9278E666EDB156A3EEC50C91C255F0089F6757DD
Filesize: 389,120 bytes

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\temps156196.txt %Temp%\temps156196.txt.tmp	106,504 bytes	MD5: 0xCF5914F8C26A4697FAC7DACD938A52F8 SHA-1: 0x0F49A7FB192AF6664BC97874C3DD3C1E06578220	Downloader-CUJ [McAfee]
2	[file and pathname of the sample #1]	389,120 bytes	MD5: 0x4541E62597FE9DD1B5BE02EF1C327FD6 SHA-1: 0x9278E666EDB156A3EEC50C91C255F0089F6757DD	(not available)

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 was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	397,312 bytes

The following module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
temps156196.txt	%Temp%\temps156196.txt	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x1640000 - 0x165A000

Notes:

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

Other details

The following Host Names were requested from a host database:

192.5.5.241
exp.freeehostian.com

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