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Worm-P2P.malas.f Analysis Report
Threat Submitted On: 8/10/2008 6:11:02 PM
Threat Analysed On: 8/10/2008 11:11:02 PM
Threat Updated On: 11/15/2009 9:15:29 PM
Type : Worm-P2P
Symptoms of malas.f
  • Spreads through peer-to-peer networking software.
  • Make a copy of themselves into the shared folder of the local machine and in available to other users of the same P2P network.
Information
Alias : p2p-worm.win32.malas.f
Md5 Hash : [2bc0c6960fb538e7ec23b0f088fc5d16]
File Size : (155648 bytes)

Here are the Technical findings of our analysis team after analyzing this malware in detail :-

Creates the following infected Files on user's System
Note:
Delete the following Files to remove Infection
File: adobe update.lnk
Path : %allusersprofile%\start menu\programs\startup
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
6ae5d3c169063d0630743a2bc9e74d04 ( 1570 bytes)
6b6ee041d770c39ec8e1048daa3cd4d4 ( 1570 bytes)
9136a877de9cf77fd4a03b3805f3cad4 ( 1570 bytes)
File: adobeupdate.exe
Path : %networkpath%
Md5Hash :( bytes)
File: sexscreensaver.exe
Path : %networkpath%
Md5Hash :2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
File: sex_game.exe
Path : %programfiles%\
Md5Hash :50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
File: sex_screensaver.scr
Path : %programfiles%\
Md5Hash :50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
File: adobeupdate.exe
Path : %programfiles%\common files
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: sex_game.exe
Path : %programfiles%\edonkey2000\incoming
Md5Hash :( bytes)
File: sex_game.exe
Path : %programfiles%\emule\incoming
Md5Hash :( bytes)
File: sex_screensaver.scr
Path : %programfiles%\emule\incoming
Md5Hash :( bytes)
File: sex_game.exe
Path : %programfiles%\icq\shared files
Md5Hash :( bytes)
File: sex_screensaver.scr
Path : %programfiles%\icq\shared files
Md5Hash :( bytes)
File: sex_game.exe
Path : %programfiles%\kazaa\my shared folder
Md5Hash :( bytes)
File: sex_game.exe
Path : %programfiles%\kmd\my shared folder
Md5Hash :( bytes)
File: sex_game.exe
Path : %programfiles%\limewire\shared
Md5Hash :( bytes)
File: sex_screensaver.scr
Path : %programfiles%\limewire\shared
Md5Hash :( bytes)
File: games.lnk
Path : %programfiles%\xpcode
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
6596ca50b844e41e1eb58e8e9b0aa2e9 ( 1498 bytes)
82c62e450767c7828fad481264545f43 ( 1498 bytes)
8641addb87ddd72fe079cd9c9aa2e119 ( 1498 bytes)
File: sexgame.exe
Path : %programfiles%\xpcode
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: sexgamelist.pif
Path : %programfiles%\xpcode
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: sexscreensaver.scr
Path : %programfiles%\xpcode
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: autoply.exe
Path : %systemdrive%
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: sex_game.exe
Path : %systemdrive%\inetpub\ftproot
Md5Hash :( bytes)
File: sex_screensaver.scr
Path : %systemdrive%\inetpub\ftproot
Md5Hash :( bytes)
File: systray.exe
Path : %temp%
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: usrinit.exe
Path : %userprofile%\application data
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: startup.exe
Path : %userprofile%\local settings
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: [randomname].exe
Path : %workingdir%
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
2bc0c6960fb538e7ec23b0f088fc5d16 ( 155648 bytes)
50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
986d759cc7af6b251a351d06637b43c1 ( 155648 bytes)
File: [randomname].exe /silent /s /s /qn /sp- /passive -s -s
Path : %workingdir%
Md5Hash :6042e59e0d205a45e71a797de7a41222 ( bytes)
File: usrinit.exe
Path : ? ?¤_char(0x01)_\application data
Md5Hash :( bytes)
File: startup.exe
Path : ?¤?ã? \local settings
Md5Hash :( bytes)
File: sexscreensaver.exe
Path : \c10-32-1\cshare
Md5Hash :50e7d14b801ea66deee441a7aaf4e311 ( 1040384 bytes)
Also creates the following files on user's System which are also created by Genuine Software :-
Note:
These file(s) can be kept as they are also created by genuine Software.
File : calculator.lnk
Path : %allusersprofile%\start menu\programs\accessories
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
146a69a13e15fb3c5ddba37954b10e1a ( 1744 bytes)
cc71210ff112481320404cc3205b0ba9 ( 1744 bytes)
File : paint.lnk
Path : %allusersprofile%\start menu\programs\accessories
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
44a4f6508fad430a4d59e51c81d378c2 ( 1756 bytes)
a4bcc4d606d9c7f723495fe3568d3ee6 ( 1756 bytes)
File : desktop.ini
Path : %homepath%\my documents
Md5Hash :869cba0364c55b0c6524419a8b86df88 ( 83 bytes)
File : desktop.ini
Path : %homepath%\my documents\my pictures
Md5Hash :f958dc73dc27ae8589bc1b1dfbd18e4a ( 190 bytes)
File : autorun.inf
Path : %systemdrive%
Md5Hash :6bb6511e595902b50fd76ca4e85dc1a3 ( 301 bytes)
File : desktop.ini
Path : %userprofile%\application data
Md5Hash :88cf0ff92a4a9fa7bd9b7513b2e9e22b ( 62 bytes)
File : desktop.ini
Path : %userprofile%\start menu
Md5Hash :87f8888e1d77d9cef69e901a97d40d73 ( 62 bytes)
File : command prompt.lnk
Path : %userprofile%\start menu\programs\accessories
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
5ed7b4c9986fd28fd141511527d22bc4 ( 1708 bytes)
df6cf92d7c57cdefc22c0e397a6065ee ( 1708 bytes)
File : notepad.lnk
Path : %userprofile%\start menu\programs\accessories
Skip Navigation Links.
Collapse Md5Hash :Md5Hash :
35875e408ef85a482b7427e0579373c4 ( 1724 bytes)
c243244052b2792ce2551a6cfdda3769 ( 1724 bytes)
The following Registry Values are added to the provided Registry Keys :-
Note:
Delete the added Values from the Key to remove Infection
|__ Value Added :
soundmax = "%userprofile%\local settings\startup.exe"
The following Registry Values are added to the provided Registry Keys which are also created by Genuine Software :-
Note:
These Values can be left as they are also created by legitimate Software :-
Creates the following child process(s) on execution:

%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

%windir%\system32\at.exe /delete /yes

%windir%\system32\at.exe 22:15 /every:m,t,w,th,f,s,su %systemdrive%\documents and settings\antispyclone

%windir%\system32\at.exe 11:15 /every:m,t,w,th,f,s,su %systemdrive%\documents and settings\antispyclone

%windir%\system32\at.exe 19:10 /every:m,t,w,th,f,s,su %systemdrive%\documents and settings\antispyclone

%windir%\system32\at.exe 20:10 /every:m,t,w,th,f,s,su %systemdrive%\documents and settings\antispyclone

services.exe

Creates the Following MUTEX(s) on user's System:-
nl40as23
Copies the Following Files to Given Location :-

Copies :%workingdir%\[random name].exe

To : %systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %userprofile%\application data\usrinit.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %userprofile%\local settings\startup.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\common files\adobeupdate.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kazaa lite\my shared folder\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kazaa lite\my shared folder\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kazaa\my shared folder\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kazaa\my shared folder\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\edonkey2000\incoming\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\edonkey2000\incoming\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\icq\shared files\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\icq\shared files\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\emule\incoming\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\emule\incoming\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\gnucleus\downloads\incoming\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\gnucleus\downloads\incoming\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kmd\my shared folder\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\kmd\my shared folder\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\limewire\shared\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\limewire\shared\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %systemdrive%\inetpub\ftproot\sex_screensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %systemdrive%\inetpub\ftproot\sex_game.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\xpcode\sexgame.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\xpcode\sexscreensaver.scr

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %programfiles%\xpcode\sexgamelist.pif

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : %systemdrive%\autoply.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : e:\autoply.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : \c10-32-1\c$\documents and settings\all users\start menu\programs\startup\adobeupdate.exe

Copies :%systemdrive%\docume~1\antisp~1\locals~1\temp\systray.exe

To : \c10-32-1\cshare\sexscreensaver.exe

NOTE:

1. %allusersprofile% Refers to the windows all users profile folder. By default it is 'C:\Documents and Settings\All Users'
2. %networkpath% Refers to the any network location on Local Area Network(LAN).
3. %programfiles% Refers to the program files folder. By default it is 'C:\Program Files'
4. %systemdrive% Refers to the windows System drive folder. By default it is 'C:\'
5. %temp% Refers to the windows temp folder. By default it is 'C:\Documents and Settings\[user]\Local Settings\Temp'
6. %userprofile% Refers to the windows current user's profile folder. By default it is 'C:\Documents and Settings\[user]'
7. %workingdir% Refers to the current directory in which user is working.
8. %homepath% Refers to the windows current user's profile folder. By default it is 'C:\Documents and Settings\[user]'

Important: We strongly recommend that you backup the Registry before making any changes to it. Incorrect changes to the Registry can result in permanent data loss or corrupted Files. Modify the malicious\suspicious Subkeys only.

Click Here for more spywarelib.com recommended PC Security and Optimization Tools

To modify registry entries in Windows Operating System:
Follow Steps:
1. Click Start > Run
2. Type “regedit” : to open registry editor
3. Navigate to required registry Key from the Left Tree control and modify accordingly.

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