ThreatExpert Report: Mal/Mdrop-B

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Submission Summary:

Submission details:

Submission received: 29 September 2012, 21:59:59
Processing time: 8 min 2 sec
Submitted sample:

File MD5: 0xBE1E90A494087B2B253F466FA56AC90F
File SHA-1: 0x16D8073536803F9C0BB867202B0D383E6F35FF0C
Filesize: 147,855 bytes

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\1.exe	102,676 bytes	MD5: 0x5A893722764985067E5FE931B4A2B3CE SHA-1: 0xF28C77A69F3D9CB7E1A8BC184CA3F6A7907461F7	Mal/Mdrop-B [Sophos]
2	%System%\D3???????.xls	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
3	%System%\Heha??3??????.txt	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
4	[file and pathname of the sample #1]	147,855 bytes	MD5: 0xBE1E90A494087B2B253F466FA56AC90F SHA-1: 0x16D8073536803F9C0BB867202B0D383E6F35FF0C	(not available)
5	%System%\?????.xls	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
6	%System%\?????.xls	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
7	%System%\?????.xls	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
8	%System%\??????.xls	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

Note:

%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows 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]	172,032 bytes
1.exe	%System%\1.exe	102,400 bytes

Other details

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

China

To mark the presence in the system, the following Mutex object was created:

_SHuassist.mtx

The following Host Name was requested from a host database:

192.5.5.241

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