ThreatExpert Report: Trojan.Msil, Trojan:MSIL/Bladabindi.B

Submission Summary:

Submission details:

Submission received: 18 August 2012, 20:18:48
Processing time: 8 min 41 sec
Submitted sample:

File MD5: 0x9F2689CDCD8D2DF3B874A397AD432B17
File SHA-1: 0x7A9DA652F6429210AEE3E934E9E5194362B59AC7
Filesize: 105,035 bytes
Alias: Trojan.Msil [Ikarus]

Summary of the findings:

What's been found	Severity Level
Creates a startup registry entry.

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%\Trojan.exe %Programs%\Startup\5cd8f17f4086744065eb0992a09e05a2.exe c:\Server.exe	26,624 bytes	MD5: 0x96E202B53A6E6478CD8258378FCAD118 SHA-1: 0x04E4B826067D3598082BF9F1EA3BDDE3C4905D8B	Trojan:MSIL/Bladabindi.B [Microsoft] Trojan.Msil [Ikarus]
2	%Temp%\Trojan.exe.tmp	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
3	[file and pathname of the sample #1]	105,035 bytes	MD5: 0x9F2689CDCD8D2DF3B874A397AD432B17 SHA-1: 0x7A9DA652F6429210AEE3E934E9E5194362B59AC7	Trojan.Msil [Ikarus]
4	c:\???? ???? ????? 2012.wav	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)

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.

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]	151,552 bytes
Trojan.exe	%Temp%\trojan.exe	N/A

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\WinRAR SFX

The newly created Registry Values are:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

5cd8f17f4086744065eb0992a09e05a2 = ""%Temp%\Trojan.exe" .."

so that Trojan.exe runs every time Windows starts

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

5cd8f17f4086744065eb0992a09e05a2 = ""%Temp%\Trojan.exe" .."

so that Trojan.exe runs every time Windows starts

[HKEY_CURRENT_USER\Software\WinRAR SFX]

C%% = "C:\"

Other details

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

5cd8f17f4086744065eb0992a09e05a2

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