ThreatExpert Report: Win32.SuspectCrc

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Submission Summary:

Submission details:

Submission received: 1 October 2012, 11:24:57
Processing time: 9 min 42 sec
Submitted sample:

File MD5: 0x93443E59C473B89B5AFAD940A843982A
File SHA-1: 0x70862E5147A2A4EDC2CB986BD42F020A6C2D56A8
Filesize: 50,688 bytes

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash
1	%Temp%\WinUpdater.exe	125 bytes	MD5: 0x7C5F5A68051F6B0C0E9A2AD33C40D415 SHA-1: 0x120865765927A61AF83F02B83DC297EEDE61EC41
2	[file and pathname of the sample #1]	50,688 bytes	MD5: 0x93443E59C473B89B5AFAD940A843982A SHA-1: 0x70862E5147A2A4EDC2CB986BD42F020A6C2D56A8

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]	N/A

Other details

The following Host Names were requested from a host database:

192.5.5.241
wpad.mrc.pctools.com.
ultra-net.net

The following GET request was made:

wpad.dat

The following HTTP URL was started reading:

http://ultra-net.net/update/WinUpdater.exe

Downloaded File Summary:

Download details:

Download retrieved: 1 October 2012 11:34:40
Processing time: 8 min 14 sec
Downloaded sample:

File MD5: 0xD66E114AF7505938EAF80CF3A69DDE7D
File SHA-1: 0x7FFA998680C79B65E553708A047B975E5E3CEAA7
Filesize: 1,428,199 bytes
Alias: Win32.SuspectCrc [Ikarus]

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\WinUpdate.exe	1,330,688 bytes	MD5: 0x3EE465299C78E4477E3B604FFF1F052A SHA-1: 0x3ABDF68172AE10C99D7961FA1655B5D7B1865199	Win32.SuspectCrc [Ikarus] packed with PE_Patch.Enigma [Kaspersky Lab]
2	%Programs%\Startup\(Skype).lnk	858 bytes	MD5: 0xB0B43EF385E5F4DF997E37F91500B0FC SHA-1: 0xCF55BD6A11F00845790B7042672F65C029A3D2EC	(not available)
3	[file and pathname of the sample #1]	1,428,199 bytes	MD5: 0xD66E114AF7505938EAF80CF3A69DDE7D SHA-1: 0x7FFA998680C79B65E553708A047B975E5E3CEAA7	Win32.SuspectCrc [Ikarus]

Notes:

%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).
%Programs% is a variable that refers to the file system directory that contains the user's program groups. A typical path is C:\Documents and Settings\[UserName]\Start Menu\Programs.

The following directory was created:

%AppData%\dclogs

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.

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]	212,992 bytes

Registry Modifications

The following Registry Keys were created:

HKEY_CURRENT_USER\Software\DC3_FEXEC
HKEY_CURRENT_USER\Software\WinRAR SFX

The newly created Registry Values are:

[HKEY_CURRENT_USER\Software\DC3_FEXEC]

10/1/2012 at 11:36:27 AM = "{8eca90c0-39b7-11db-855f-806d6172696f-13441600}"

[HKEY_CURRENT_USER\Software\WinRAR SFX]

C%%DOCUME~1%%UserName%%LOCALS~1%Temp% = "%Temp%\"

Other details

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:

216.6.0.28

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

Remote Host	Port Number
216.6.0.28	911

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 911:

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