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

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Submission Summary:

Submission details:

Submission received: 15 August 2012, 02:58:12
Processing time: 8 min 38 sec
Submitted sample:

File MD5: 0x33E6EEF8CF24919484D2EA29D590BBDD
File SHA-1: 0xFD13AEA281B6B3F0D5265CBDB93AE4CA7899629E
Filesize: 94,208 bytes
Alias:

Trojan:MSIL/Bladabindi.B [Microsoft]
Trojan.Msil [Ikarus]

Summary of the findings:

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

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\winrar.exe %Programs%\Startup\1ce5c21bd74c042cdcd945e699c951c5.exe [file and pathname of the sample #1]	94,208 bytes	MD5: 0x33E6EEF8CF24919484D2EA29D590BBDD SHA-1: 0xFD13AEA281B6B3F0D5265CBDB93AE4CA7899629E	Trojan:MSIL/Bladabindi.B [Microsoft] Trojan.Msil [Ikarus]
2	%Temp%\winrar.exe.tmp	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 was a new process created in the system:

Process Name	Process Filename	Main Module Size
winrar.exe	%Temp%\winrar.exe	N/A

Registry Modifications

The newly created Registry Values are:

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

1ce5c21bd74c042cdcd945e699c951c5 = ""%Temp%\winrar.exe" .."

so that winrar.exe runs every time Windows starts

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

1ce5c21bd74c042cdcd945e699c951c5 = ""%Temp%\winrar.exe" .."

so that winrar.exe runs every time Windows starts

Other details

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

1ce5c21bd74c042cdcd945e699c951c5

The following Host Name was requested from a host database:

192.5.5.241

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