Submission Summary:

• Submission details:
• Submission received: 3 November 2009, 15:37:26
• Processing time: 6 min 11 sec
• Submitted sample:
• File MD5: 0xB809451D3F77C352609627D3F51D6EF1
• File SHA-1: 0x4458B531A0F05FB92DD297C2BA2CEE691254DCC6
• Filesize: 139,264 bytes
• Alias:
• Backdoor.Coreflood.C [Symantec]
• Trojan.Win32.Possador.abi [Kaspersky Lab]

• Summary of the findings:

What's been found	Severity Level
Registers a 32-bit in-process server DLL.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! The following threat categories were identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\davclet.dat	128 bytes	MD5: 0xF668783C8A32941BBDDD95F62E429918 SHA-1: 0x863AB0A2ABE7BC28FC85D5BC2C1B8596C9A157D4	(not available)
2	%System%\hotpltg.dat	128 bytes	MD5: 0x8E7D238279E3DA668018B7470828D4E8 SHA-1: 0x45800A709D70F92DB0E923A08A4FE9D407782CC1	(not available)
3	[file and pathname of the sample #1]	139,264 bytes	MD5: 0xB809451D3F77C352609627D3F51D6EF1 SHA-1: 0x4458B531A0F05FB92DD297C2BA2CEE691254DCC6	Backdoor.Coreflood.C [Symantec] Trojan.Win32.Possador.abi [Kaspersky Lab]
4	%System%\sfcfilas.dat	0 bytes	MD5: 0xD41D8CD98F00B204E9800998ECF8427E SHA-1: 0xDA39A3EE5E6B4B0D3255BFEF95601890AFD80709	(not available)
5	%System%\ulibasd.dat	116 bytes	MD5: 0xC7B83AE3A53A35DDCE7DCE9A3975A487 SHA-1: 0xCB706FE34B84DA0D66F91AAF8EBA4C50DD153744	(not available)
6	%System%\ulibasd.ocx	126,976 bytes	MD5: 0x09A4716D25AC3C27268F57B45ECC9449 SHA-1: 0xC35489B5D7A3A311F1E94185077D0596F7AD162E	Backdoor.Coreflood.C [Symantec] Trojan.Win32.Possador.adx [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:

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5EDFEB04-E0B0-F8A8-2DFA-40C999F1376F}
• HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5EDFEB04-E0B0-F8A8-2DFA-40C999F1376F}\InprocServer32
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ulibasd

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5EDFEB04-E0B0-F8A8-2DFA-40C999F1376F}\InprocServer32]
• (Default) = "%System%\ulibasd.ocx"
• ThreadingModel = "Apartment"
• [HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{5EDFEB04-E0B0-F8A8-2DFA-40C999F1376F}]
• (Default) = "ulibasd"
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\ulibasd]
• (Default) = "{5EDFEB04-E0B0-F8A8-2DFA-40C999F1376F}"

• The following Registry Values were modified:
• [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\ServiceCurrent]
• (Default) =
• [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\ServiceCurrent]
• (Default) =