Anilrgowda

Virus Profile: W32/HLLP.Philis.eo

Risk Assessment - Home Users: Low - Corporate Users: Low Date Discovered: 1/16/2007 Date Added: 1/16/2007 Origin: N/A Length: N/A Type: Virus SubType: Parasitic DAT Required: 4940 Virus Family Statistics (over the past 30 days)

Virus Name Infected Files Scanned Files % Infected Computers HLLP 8 282,057 0.00 HLLP.10000a 3 8,770 0.00 HLLP.10217 0 0 0.00 HLLP.11652 0 0 0.00 HLLP.13040 0 0 0.00 HLLP.15392 0 0 0.00 HLLP.3327 3 8,770 0.00 HLLP.4629 0 0 0.00 HLLP.4665 0 0 0.00 HLLP.4676 0 0 0.00 HLLP.4720 0 0 0.00 HLLP.4745 0 0 0.00 HLLP.4745b 0 0 0.00 HLLP.4745c 5 282,057 0.00 HLLP.4999 0 0 0.00 HLLP.5000a 0 0 0.00 HLLP.5153 0 0 0.00 HLLP.5667 0 0 0.00 HLLP.5792 0 0 0.00 HLLP.5844 0 0 0.00 HLLP.5846a 0 0 0.00 HLLP.6253 0 0 0.00 HLLP.6279 0 0 0.00 HLLP.6425 0 0 0.00 HLLP.6549 0 0 0.00 HLLP.7128 0 0 0.00 HLLP.7296 3 8,770 0.00 HLLP.7408 26 565,675 0.00 HLLP.7720 0 0 0.00 HLLP.7792a 0 0 0.00 HLLP.7792b 0 0 0.00 HLLP.7929 0 0 0.00 HLLP.7940 0 0 0.00 HLLP.8192a 0 0 0.00 HLLP.8192b 0 0 0.00 HLLP.8192c 0 0 0.00 HLLP.8304a 0 0 0.00 HLLP.8688 0 0 0.00 HLLP.9312 0 0 0.00 HLLP.Ale 3 8,770 0.00 HLLP.GR1 11 282,057 0.00 HLLP.Nazi.4415 3 8,770 0.00 HLLP.Vova.a 0 0 0.00 HLLP.Vova.b 0 0 0.00 W32/HLLP 13 499,766 0.00 W32/HLLP.14336a 1 8 0.00 W32/HLLP.17408a 4 10,376 0.00 W32/HLLP.18432 0 0 0.00 W32/HLLP.49110 0 0 0.00 W32/HLLP.dr 5 35,024 0.00 W32/HLLP.Giwin 0 0 0.00 Virus Characteristics

<p>On execution, this variant copies itself into %WinDir%\Uninstall folder as rundl132.exe and adds a load registry entry to activate itself on reboot. It also creates the following registry entries: </p>
<p>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DownloadMana ger<br/>
HKEY_LOCAL_MACHINE\SOFTWARE\Soft\DownloadWWW\auto: "1"</p>
<p>It drops a .DLL file named RichDll.dll (W32/HLLP.Philis.dll) in %WinDir%. It then injects this dll into processes Explorer.exe and IExplore.exe. This dll is responsible for downloading the PWS-Lineage or PWS-LegMir password stealing trojan from the following location:</p>
<p>www.kikei.com/[removed]/1.exe<br/>www.kikei.com/[removed]/2.exe <br/>www.kikei.com/[removed]/3.exe <br/>www.kikei.com/[removed]/4.exe<br/>www.kikei.com/[removed]/5.exe<br/>www.kikei.com/[removed]/6.exe<br/>www.kikei.com/[removed]/7.exe<br/>www.kikei.com/[removed]/8.exe<br/>www.kikei.com/[removed]/9.exe<br/>www.kikei.com/[removed]/10.exe</p>
<p><br/>W32/HLLP.Philis.eo searches for executable files and prepends its viral code to target files. </p>
<p><br/>The virus creates files with the name "_desktop.ini" in every folder that it visits while looking for executable files to infect. This is created as a hidden system file and contains the date on which virus was executed to visit the folder in which the file resides. The date is shown in yyyy/mm/dd format.</p>
<p>The virus tries to spread via existing network shares. It searches for all active machines within the subnet. When it finds an active machine it sends an ICMP ping request and waits for a response. <br/>After getting the ping response it tries to access the ADMIN$, IPC$ and any other shares that might exist on the machine. </p>
<p>If the virus is able to access a shared resource, it first copies "_desktop.ini" to the root of the share to mark the share as visited and then infects executables present in the share. </p>
<p>While infecting executables via a network share the virus does not limit itself to infecting specific file names as mentioned above. In the case of a shared printer, the viruses' infection routine effectively creates printer job to print the date as contained in "_desktop.ini" file that the virus tries to copy.</p>
Indications of Infection

• Presence of %WinDir%\RichDll.dll
• Presence of registry entries as described
• Presence of files named _desktop.ini in many folders.
• These files have the system (S) and hidden (H) attributes set These files are detected as W32/HLLP.Philis.ini
• Increase in size of EXE files
• Increase in disk activity (read and write)
• HTTP network traffic to the aforementioned web address

Method of Infection

W32/HLLP.Philis.eo is a file infecting virus. Infection starts with manual execution of the binary. For spreading, the virus also relies on improperly configured/protected (open) shared drives.

Removal Instructions

All Users:
Use current engine and DAT files for detection and removal.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
Additional Windows ME/XP removal considerations

Aliases

PE_LOOKED.KZ-O (Trend Micro), W32.Looked.AH (Symantec), W32/Viking.GE.drp (Panda), Win32.HLLW.Gavir.54 (Doctor Web)