ThreatExpert Report: Suspicious.MH690, Mal/Behav-180, Trojan-Dropper.Delf

Submission Summary:

Submission details:

Submission received: 30 September 2012, 13:00:48
Processing time: 7 min 57 sec
Submitted sample:

File MD5: 0x59BA91B882DF31D21126FA8C31A34584
File SHA-1: 0x6C75D359F682D39349FA7495EF184E67C551E8F5
Filesize: 152,277 bytes

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.

Technical Details:

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash
1	[file and pathname of the sample #1]	152,277 bytes	MD5: 0x59BA91B882DF31D21126FA8C31A34584 SHA-1: 0x6C75D359F682D39349FA7495EF184E67C551E8F5
2	%Windir%\viadinho.jpg	48,025 bytes	MD5: 0x057297083EABFE580A530EDBF39190C4 SHA-1: 0x1630909BDC3AD77EF37DF9BC30E24B0E7CCC644F
3	%Windir%\wier.exe	20,480 bytes	MD5: 0x01C29201287B730D9EA1A258D92AA481 SHA-1: 0x201B86E5CA442BE6020B264CE9C924ED1264222C

Note:

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

The following directory was created:

c:\$Recicle$

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]	131,072 bytes
wier.exe	%Windir%\wier.exe	20,480 bytes

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\WinRAR SFX

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\WinRAR SFX]

C%%Windows = "C:\Windows"

Other details

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

Russian Federation

The following Host Name was requested from a host database:

192.5.5.241

The data identified by the following URL was then requested from the remote web server:

http://reportsuzano.com/MiscDoc/winger.doc

Downloaded File Summary:

Download details:

Download retrieved: 30 September 2012 13:08:46
Processing time: 7 min 55 sec
Downloaded sample:

File MD5: 0xD832E6049C80BC832B50258BDBF97CB2
File SHA-1: 0x1AE7BF4DE1AB4A72660AC0BD2A7FCE0A19547F36
Filesize: 245,760 bytes
Alias & packer info:

Suspicious.MH690 [Symantec]
Mal/Behav-180 [Sophos]
Trojan-Dropper.Delf [Ikarus]
packed with: PKLite32 [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
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	%System%\cflnk.dll	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
2	[file and pathname of the sample #1]	245,760 bytes	MD5: 0xD832E6049C80BC832B50258BDBF97CB2 SHA-1: 0x1AE7BF4DE1AB4A72660AC0BD2A7FCE0A19547F36	Suspicious.MH690 [Symantec] Mal/Behav-180 [Sophos] Trojan-Dropper.Delf [Ikarus] packed with PKLite32 [Kaspersky Lab]

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 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]	708,608 bytes

Registry Modifications

The newly created Registry Value is:

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

WGer = "[file and pathname of the sample #1]"

so that [file and pathname of the sample #1] runs every time Windows starts

Other details

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

Brazil

The following Host Name was requested from a host database:

192.5.5.241

The following Internet Connection was established:

Server Name	Server Port	Connect as User	Connection Password
www.google.com.br	80	(null)	(null)

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