ThreatExpert Report: Trojan-Downloader.Win32.Delf.qln, Mal/DelpDldr-C..

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Submission Summary:

Submission details:

Submission received: 27 December 2008, 01:14:23
Processing time: 6 min 56 sec
Submitted sample:

File MD5: 0x3596AD2E5F87401E8939A48A7B9CBFF6
File SHA-1: 0x3D6E2EF19769AB13479FD73A3776F0D43D07E0D3
Filesize: 34,816 bytes
Alias & packer info:

Trojan-Downloader.Win32.Delf.qln [Kaspersky Lab]
Mal/DelpDldr-C [Sophos]
Trojan-Downloader.Win32.Small [Ikarus]
packed with: PE_Patch.UPX [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A program that downloads files to the local computer that may represent security risk

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	34,816 bytes	MD5: 0x3596AD2E5F87401E8939A48A7B9CBFF6 SHA-1: 0x3D6E2EF19769AB13479FD73A3776F0D43D07E0D3	Trojan-Downloader.Win32.Delf.qln [Kaspersky Lab] Mal/DelpDldr-C [Sophos] Trojan-Downloader.Win32.Small [Ikarus] packed with PE_Patch.UPX [Kaspersky Lab]

The following directory was created:

%System%\service

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]	126,976 bytes

Other details

The following Internet Connection was established:

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

The following GET requests were made:

index.html
index.jpg

The following Internet download was started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://70.86.68.75/diniz/a04.jpg	%System%\service\\tempfill.tmp

Downloaded File Summary:

Download details:

Download retrieved: 27 December 2008 01:21:23
Processing time: 6 min 30 sec
Downloaded sample:

File MD5: 0xDC3689D7C38732209BE68E5A65692E26
File SHA-1: 0xC0D6436A59E0C0E1574C7C61B77D629CD8C1B817
Filesize: 205,312 bytes
Alias & packer info:

Trojan-Downloader.Win32.Delf.qls [Kaspersky Lab]
Mal/Generic-A [Sophos]
Trojan.Crypt.Delf [Ikarus]
packed with: PE_Patch.UPX [Kaspersky Lab]

Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A program that downloads files to the local computer that may represent security risk

File System Modifications

The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	[file and pathname of the sample #1]	205,312 bytes	MD5: 0xDC3689D7C38732209BE68E5A65692E26 SHA-1: 0xC0D6436A59E0C0E1574C7C61B77D629CD8C1B817	Trojan-Downloader.Win32.Delf.qls [Kaspersky Lab] Mal/Generic-A [Sophos] Trojan.Crypt.Delf [Ikarus] packed with PE_Patch.UPX [Kaspersky Lab]

The following directory was created:

%System%\service

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]	532,480 bytes

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\registro

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\registro]

upd1 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBtLmP6DcPovgS6S"
sys1 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBs5oSMDcPovgS6S"
msn1 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBsrpRcDcPovgS6S"
upd2 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBtLmP6DcPovgS6S"
sys2 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBs5oSMDcPovgS6S"
msn2 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBsrpRcDcPovgS6S"
upd3 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBtLmP6DcPovgS6S"
sys3 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBs5oSMDcPovgS6S"
msn3 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBsrpRcDcPovgS6S"
upd4 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBtLmP6DcPovgS6S"
sys4 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBs5oSMDcPovgS6S"
msn4 = "Q7HqS3elBpSmBZWsBZOuBZSsBsHfRcbwBsrpRcDcPovgS6S"

The following Registry Value was modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

Userinit = "%System%\userinit.exe,[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 data identified by the following URL was then requested from the remote web server:

http://70.86.68.76/diniz/updcfg.jpg

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