W32.Rontokbro.Z@mm is a mass-mailing worm that lowers security settings.

Type:	Worm
Infection Length:	45,120 bytes
Systems Affected:	Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Virus Definitions (LiveUpdate™ Plus) March 31, 2006 Virus Definitions (LiveUpdate™ Daily) March 31, 2006 Virus Definitions (LiveUpdate™ Weekly) April 05, 2006 Virus Definitions (Intelligent Updater) March 31, 2006

Wild Number of infections: 0 - 49 Number of sites: 0 - 2 Geographical distribution: Low Threat containment: Easy Removal: Easy

Threat Metrics Wild: Low Damage: Medium Distribution: Medium

Damage

• Payload Trigger: n/a
• Payload: n/a
  • Large scale e-mailing: n/a
  • Deletes files: n/a
  • Modifies files: n/a
  • Degrades performance: n/a
  • Causes system instability: n/a
  • Releases confidential info: n/a
  • Compromises security settings: Disables security-related applications and ends security-related processes.

Distribution

• Subject of email: "My Best Photo" or "Fotoku yg Paling Cantik"
• Name of attachment: Photo.zip
• Size of attachment: n/a
• Time stamp of attachment: n/a
• Ports: n/a
• Shared drives: n/a
• Target of infection: n/a

When W32.Rontokbro.Z@mm is executed, it performs the following actions:

1. Copies itself as the following files:
   
   
   • %Windir%\j[RANDOM].exe
   • %Windir%\o[RANDOM].exe
   • %Windir%\_default[RANDOM].pif
   • %System%\c_[RANDOM]k.com
   • %UserProfile%\Local Settings\Application Data\jalak-93[RANDOM]15-bali.com
     
     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).
   • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows (Windows 95/98/Me/XP) or C:\Winnt (Windows NT/2000).
   • %UserProfile% is a variable that refers to the current user?123,456s profile folder. By default, this is C:\Documents and Settings\[CURRENT USER] (Windows NT/2000/XP).
     
     
2. Creates the following file as a marker of infection:
   
   C:\Baca Bro !!!.txt
   
   
3. Creates the following folders:
   
   
   • %System%\s[RANDOM]
   • %Windir%Ad[RANDOM]
   • %UserProfile%\Local Settings\Application Data\dv6[RANDOM]0x
     
     
4. Copies itself into these folders as one or more of the following files:
   
   
   • csrss.exe
   • lsass.exe
   • services.exe
   • smss.exe
   • winlogon.exe
   • sv71[RANDOM].exe
   • zh59[RANDOM].exe
   • yesbron.com
   • qm[RANDOM].exe
     
     
5. Creates the following folders:
   
   
   • %System%\s[RANDOM]\Spread.Sent.Bro
   • %System%\s[RANDOM]\Spread.Mail.Bro
     
     Note: All files and folders that created by the worm are hidden from the user.
     
     
6. Renames the following file:
   
   %System%\msvbvm60.dll to %System%\msvbvm60.dll.[RANDOM]
   
   
7. Adds the value:
   
   "[RANDOM]" = ""%UserProfile%\Local Settings\Application Data\dv[RANDOM]0x\yesbron.com""
   
   to the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
   
   so that the worm runs every time Windows starts.
   
   
8. Adds the value:
   
   "[RANDOM]" = ""%System%\s[RANDOM]\zh59[RANDOM].exe""
   
   to the registry subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
   
   so that the worm runs every time Windows starts.
   
   
9. Adds the value:
   
   "[RANDOM]" = ""%Windir%\_default[RANDOM].pif""
   
   to the registry subkey:
   
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
   
   so that the worm runs every time Windows starts.
   
   
10. Adds the value:
    
    "[RANDOM]" = "%Windir%\j[RANDOM].exe"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    
    so that the worm runs every time Windows starts.
    
    
11. Adds the value:
    
    "AlternateShell" = "c_[RANDOM]k.com"
    
    to the registry subkey:
    
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot
    
    so that the worm runs every time Windows starts.
    
    
12. Creates the following registry entry:
    
    HKEY_CURRENT_USER\Software\Brontok
    
    
13. Modifies the values:
    
    "Userinit" = "%System%\userinit.exe,%Windir%\j[RANDOM].exe"
    "Shell" = "Explorer.exe "%Windir%\o[RANDOM].exe""
    
    in the registry subkey:
    
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
    
    so that the worm runs every time Windows starts.
    
    
14. Modifies the values:
    
    "Hidden" = "0"
    "HideFileExt" = "1"
    "ShowSuperHidden" = "0"
    
    in the registry subkey:
    
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
    
    in an attempt to hide itself on the compromised computer.
    
    
15. Modifies the value:
    
    "DisableRegistryTools" = "1"
    
    in the registry subkey:
    
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
    
    to disable the Registry Editor.
    
    
16. May add two scheduled tasks:
    
    %Windir%Tasks\At1.job
    %Windir%Tasks\At2.job
    
    that execute the following file at 11:03 and 17:08 every day:
    
    %UserProfile%\Local Settings\Application Data\dv[RANDOM]0x\yesbron.com
    
    
17. May replace the existing hosts file with one that contains the following text, so that any attempts to connect to these Web sites fail:
    
    127.0.0.22 mcafee.com
    127.0.0.22 www.mcafee.com
    127.0.0.22 mcafee.net
    127.0.0.22 www.mcafee.net
    127.0.0.22 mcafee.org
    127.0.0.22 www.mcafee.org
    127.0.0.22 mcafeesecurity.com
    127.0.0.22 www.mcafeesecurity.com
    127.0.0.22 mcafeesecurity.net
    127.0.0.22 www.mcafeesecurity.net
    127.0.0.22 mcafeesecurity.org
    127.0.0.22 www.mcafeesecurity.org
    127.0.0.22 mcafeeb2b.com
    127.0.0.22 www.mcafeeb2b.com
    127.0.0.22 mcafeeb2b.net
    127.0.0.22 www.mcafeeb2b.net
    127.0.0.22 mcafeeb2b.org
    127.0.0.22 www.mcafeeb2b.org
    127.0.0.22 nai.com
    127.0.0.22 www.nai.com
    127.0.0.22 nai.net
    127.0.0.22 www.nai.net
    127.0.0.22 nai.org
    127.0.0.22 www.nai.org
    127.0.0.22 vil.nai.com
    127.0.0.22 www.vil.nai.com
    127.0.0.22 vil.nai.net
    127.0.0.22 www.vil.nai.net
    127.0.0.22 vil.nai.org
    127.0.0.22 www.vil.nai.org
    127.0.0.22 grisoft.com
    127.0.0.22 www.grisoft.com
    127.0.0.22 grisoft.net
    127.0.0.22 www.grisoft.net
    127.0.0.22 grisoft.org
    127.0.0.22 www.grisoft.org
    127.0.0.22 kaspersky-labs.com
    127.0.0.22 www.kaspersky-labs.com
    127.0.0.22 kaspersky-labs.net
    127.0.0.22 www.kaspersky-labs.net
    127.0.0.22 kaspersky-labs.org
    127.0.0.22 www.kaspersky-labs.org
    127.0.0.22 kaspersky.com
    127.0.0.22 www.kaspersky.com
    127.0.0.22 kaspersky.net
    127.0.0.22 www.kaspersky.net
    127.0.0.22 kaspersky.org
    127.0.0.22 www.kaspersky.org
    127.0.0.22 downloads1.kaspersky-labs.com
    127.0.0.22 www.downloads1.kaspersky-labs.com
    127.0.0.22 downloads1.kaspersky-labs.net
    127.0.0.22 www.downloads1.kaspersky-labs.net
    127.0.0.22 downloads1.kaspersky-labs.org
    127.0.0.22 www.downloads1.kaspersky-labs.org
    127.0.0.22 downloads2.kaspersky-labs.com
    127.0.0.22 www.downloads2.kaspersky-labs.com
    127.0.0.22 downloads2.kaspersky-labs.net
    127.0.0.22 www.downloads2.kaspersky-labs.net
    127.0.0.22 downloads2.kaspersky-labs.org
    127.0.0.22 www.downloads2.kaspersky-labs.org
    127.0.0.22 downloads3.kaspersky-labs.com
    127.0.0.22 www.downloads3.kaspersky-labs.com
    127.0.0.22 downloads3.kaspersky-labs.net
    127.0.0.22 www.downloads3.kaspersky-labs.net
    127.0.0.22 downloads3.kaspersky-labs.org
    127.0.0.22 www.downloads3.kaspersky-labs.org
    127.0.0.22 downloads4.kaspersky-labs.com
    127.0.0.22 www.downloads4.kaspersky-labs.com
    127.0.0.22 downloads4.kaspersky-labs.net
    127.0.0.22 www.downloads4.kaspersky-labs.net
    127.0.0.22 downloads4.kaspersky-labs.org
    127.0.0.22 www.downloads4.kaspersky-labs.org
    127.0.0.22 download.mcafee.com
    127.0.0.22 www.download.mcafee.com
    127.0.0.22 download.mcafee.net
    127.0.0.22 www.download.mcafee.net
    127.0.0.22 download.mcafee.org
    127.0.0.22 www.download.mcafee.org
    127.0.0.22 norton.com
    127.0.0.22 www.norton.com
    127.0.0.22 norton.net
    127.0.0.22 www.norton.net
    127.0.0.22 norton.org
    127.0.0.22 www.norton.org
    127.0.0.22 symantec.com
    127.0.0.22 www.symantec.com
    127.0.0.22 symantec.net
    127.0.0.22 www.symantec.net
    127.0.0.22 symantec.org
    127.0.0.22 www.symantec.org
    127.0.0.22 liveupdate.symantecliveupdate.com
    127.0.0.22 www.liveupdate.symantecliveupdate.com
    127.0.0.22 liveupdate.symantecliveupdate.net
    127.0.0.22 www.liveupdate.symantecliveupdate.net
    127.0.0.22 liveupdate.symantecliveupdate.org
    127.0.0.22 www.liveupdate.symantecliveupdate.org
    127.0.0.22 liveupdate.symantec.com
    127.0.0.22 www.liveupdate.symantec.com
    127.0.0.22 liveupdate.symantec.net
    127.0.0.22 www.liveupdate.symantec.net
    127.0.0.22 liveupdate.symantec.org
    127.0.0.22 www.liveupdate.symantec.org
    127.0.0.22 update.symantec.com
    127.0.0.22 www.update.symantec.com
    127.0.0.22 update.symantec.net
    127.0.0.22 www.update.symantec.net
    127.0.0.22 update.symantec.org
    127.0.0.22 www.update.symantec.org
    127.0.0.22 securityresponse.symantec.com
    127.0.0.22 www.securityresponse.symantec.com
    127.0.0.22 securityresponse.symantec.net
    127.0.0.22 www.securityresponse.symantec.net
    127.0.0.22 securityresponse.symantec.org
    127.0.0.22 www.securityresponse.symantec.org
    127.0.0.22 sarc.com
    127.0.0.22 www.sarc.com
    127.0.0.22 sarc.net
    127.0.0.22 www.sarc.net
    127.0.0.22 sarc.org
    127.0.0.22 www.sarc.org
    127.0.0.22 vaksin.com
    127.0.0.22 www.vaksin.com
    127.0.0.22 vaksin.net
    127.0.0.22 www.vaksin.net
    127.0.0.22 vaksin.org
    127.0.0.22 www.vaksin.org
    127.0.0.22 forum.vaksin.com
    127.0.0.22 www.forum.vaksin.com
    127.0.0.22 forum.vaksin.net
    127.0.0.22 www.forum.vaksin.net
    127.0.0.22 forum.vaksin.org
    127.0.0.22 www.forum.vaksin.org
    127.0.0.22 norman.com
    127.0.0.22 www.norman.com
    127.0.0.22 norman.net
    127.0.0.22 www.norman.net
    127.0.0.22 norman.org
    127.0.0.22 www.norman.org
    127.0.0.22 trendmicro.com
    127.0.0.22 www.trendmicro.com
    127.0.0.22 trendmicro.net
    127.0.0.22 www.trendmicro.net
    127.0.0.22 trendmicro.org
    127.0.0.22 www.trendmicro.org
    127.0.0.22 trendmicro-europe.com
    127.0.0.22 www.trendmicro-europe.com
    127.0.0.22 trendmicro-europe.net
    127.0.0.22 www.trendmicro-europe.net
    127.0.0.22 trendmicro-europe.org
    127.0.0.22 www.trendmicro-europe.org
    127.0.0.22 ae.trendmicro-europe.com
    127.0.0.22 www.ae.trendmicro-europe.com
    127.0.0.22 ae.trendmicro-europe.net
    127.0.0.22 www.ae.trendmicro-europe.net
    127.0.0.22 ae.trendmicro-europe.org
    127.0.0.22 www.ae.trendmicro-europe.org
    127.0.0.22 it.trendmicro-europe.com
    127.0.0.22 www.it.trendmicro-europe.com
    127.0.0.22 it.trendmicro-europe.net
    127.0.0.22 www.it.trendmicro-europe.net
    127.0.0.22 it.trendmicro-europe.org
    127.0.0.22 www.it.trendmicro-europe.org
    127.0.0.22 secunia.com
    127.0.0.22 www.secunia.com
    127.0.0.22 secunia.net
    127.0.0.22 www.secunia.net
    127.0.0.22 secunia.org
    127.0.0.22 www.secunia.org
    127.0.0.22 winantivirus.com
    127.0.0.22 www.winantivirus.com
    127.0.0.22 winantivirus.net
    127.0.0.22 www.winantivirus.net
    127.0.0.22 winantivirus.org
    127.0.0.22 www.winantivirus.org
    127.0.0.22 pandasoftware.com
    127.0.0.22 www.pandasoftware.com
    127.0.0.22 pandasoftware.net
    127.0.0.22 www.pandasoftware.net
    127.0.0.22 pandasoftware.org
    127.0.0.22 www.pandasoftware.org
    127.0.0.22 esafe.com
    127.0.0.22 www.esafe.com
    127.0.0.22 esafe.net
    127.0.0.22 www.esafe.net
    127.0.0.22 esafe.org
    127.0.0.22 www.esafe.org
    127.0.0.22 f-secure.com
    127.0.0.22 www.f-secure.com
    127.0.0.22 f-secure.net
    127.0.0.22 www.f-secure.net
    127.0.0.22 f-secure.org
    127.0.0.22 www.f-secure.org
    127.0.0.22 europe.f-secure.com
    127.0.0.22 www.europe.f-secure.com
    127.0.0.22 europe.f-secure.net
    127.0.0.22 www.europe.f-secure.net
    127.0.0.22 europe.f-secure.org
    127.0.0.22 www.europe.f-secure.org
    127.0.0.22 bhs.com
    127.0.0.22 www.bhs.com
    127.0.0.22 bhs.net
    127.0.0.22 www.bhs.net
    127.0.0.22 bhs.org
    127.0.0.22 www.bhs.org
    127.0.0.22 datafellows.com
    127.0.0.22 www.datafellows.com
    127.0.0.22 datafellows.net
    127.0.0.22 www.datafellows.net
    127.0.0.22 datafellows.org
    127.0.0.22 www.datafellows.org
    127.0.0.22 cheyenne.com
    127.0.0.22 www.cheyenne.com
    127.0.0.22 cheyenne.net
    127.0.0.22 www.cheyenne.net
    127.0.0.22 cheyenne.org
    127.0.0.22 www.cheyenne.org
    127.0.0.22 ontrack.com
    127.0.0.22 www.ontrack.com
    127.0.0.22 ontrack.net
    127.0.0.22 www.ontrack.net
    127.0.0.22 ontrack.org
    127.0.0.22 www.ontrack.org
    127.0.0.22 sands.com
    127.0.0.22 www.sands.com
    127.0.0.22 sands.net
    127.0.0.22 www.sands.net
    127.0.0.22 sands.org
    127.0.0.22 www.sands.org
    127.0.0.22 sophos.com
    127.0.0.22 www.sophos.com
    127.0.0.22 sophos.net
    127.0.0.22 www.sophos.net
    127.0.0.22 sophos.org
    127.0.0.22 www.sophos.org
    127.0.0.22 icubed.com
    127.0.0.22 www.icubed.com
    127.0.0.22 icubed.net
    127.0.0.22 www.icubed.net
    127.0.0.22 icubed.org
    127.0.0.22 www.icubed.org
    127.0.0.22 perantivirus.com
    127.0.0.22 www.perantivirus.com
    127.0.0.22 perantivirus.net
    127.0.0.22 www.perantivirus.net
    127.0.0.22 perantivirus.org
    127.0.0.22 www.perantivirus.org
    127.0.0.22 castlecops.com
    127.0.0.22 www.castlecops.com
    127.0.0.22 castlecops.net
    127.0.0.22 www.castlecops.net
    127.0.0.22 castlecops.org
    127.0.0.22 www.castlecops.org
    127.0.0.22 virustotal.com
    127.0.0.22 www.virustotal.com
    127.0.0.22 virustotal.net
    127.0.0.22 www.virustotal.net
    127.0.0.22 virustotal.org
    127.0.0.22 www.virustotal.org
    127.0.0.22 free-av.com
    127.0.0.22 www.free-av.com
    127.0.0.22 free-av.net
    127.0.0.22 www.free-av.net
    127.0.0.22 free-av.org
    127.0.0.22 www.free-av.org
    127.0.0.22 antivirus.com
    127.0.0.22 www.antivirus.com
    127.0.0.22 antivirus.net
    127.0.0.22 www.antivirus.net
    127.0.0.22 antivirus.org
    127.0.0.22 www.antivirus.org
    127.0.0.22 anti-virus.com
    127.0.0.22 www.anti-virus.com
    127.0.0.22 anti-virus.net
    127.0.0.22 www.anti-virus.net
    127.0.0.22 anti-virus.org
    127.0.0.22 www.anti-virus.org
    127.0.0.22 ca.com
    127.0.0.22 www.ca.com
    127.0.0.22 ca.net
    127.0.0.22 www.ca.net
    127.0.0.22 ca.org
    127.0.0.22 www.ca.org
    127.0.0.22 fajarweb.com
    127.0.0.22 www.fajarweb.com
    127.0.0.22 fajarweb.net
    127.0.0.22 www.fajarweb.net
    127.0.0.22 fajarweb.org
    127.0.0.22 www.fajarweb.org
    127.0.0.22 jasakom.com
    127.0.0.22 www.jasakom.com
    127.0.0.22 jasakom.net
    127.0.0.22 www.jasakom.net
    127.0.0.22 jasakom.org
    127.0.0.22 www.jasakom.org
    127.0.0.22 backup.grisoft.com
    127.0.0.22 www.backup.grisoft.com
    127.0.0.22 backup.grisoft.net
    127.0.0.22 www.backup.grisoft.net
    127.0.0.22 backup.grisoft.org
    127.0.0.22 www.backup.grisoft.org
    127.0.0.22 infokomputer.com
    127.0.0.22 www.infokomputer.com
    127.0.0.22 infokomputer.net
    127.0.0.22 www.infokomputer.net
    127.0.0.22 infokomputer.org
    127.0.0.22 www.infokomputer.org
    127.0.0.22 playboy.com
    127.0.0.22 www.playboy.com
    127.0.0.22 playboy.net
    127.0.0.22 www.playboy.net
    127.0.0.22 playboy.org
    127.0.0.22 www.playboy.org
    127.0.0.22 sex-mission.com
    127.0.0.22 www.sex-mission.com
    127.0.0.22 sex-mission.net
    127.0.0.22 www.sex-mission.net
    127.0.0.22 sex-mission.org
    127.0.0.22 www.sex-mission.org
    127.0.0.22 pornstargals.com
    127.0.0.22 www.pornstargals.com
    127.0.0.22 pornstargals.net
    127.0.0.22 www.pornstargals.net
    127.0.0.22 pornstargals.org
    127.0.0.22 www.pornstargals.org
    127.0.0.22 kaskus.com
    127.0.0.22 www.kaskus.com
    127.0.0.22 kaskus.net
    127.0.0.22 www.kaskus.net
    127.0.0.22 kaskus.org
    127.0.0.22 www.kaskus.org
    127.0.0.22 17tahun.com
    127.0.0.22 www.17tahun.com
    127.0.0.22 17tahun.net
    127.0.0.22 www.17tahun.net
    127.0.0.22 17tahun.org
    127.0.0.22 www.17tahun.org
    127.0.0.22 padinet.com
    127.0.0.22 www.padinet.com
    127.0.0.22 padinet.net
    127.0.0.22 www.padinet.net
    127.0.0.22 padinet.org
    127.0.0.22 www.padinet.org
    127.0.0.22 jeruk.padinet.com
    127.0.0.22 www.jeruk.padinet.com
    127.0.0.22 jeruk.padinet.net
    127.0.0.22 www.jeruk.padinet.net
    127.0.0.22 jeruk.padinet.org
    127.0.0.22 www.jeruk.padinet.org
    127.0.0.22 compactbyte.com
    127.0.0.22 www.compactbyte.com
    127.0.0.22 compactbyte.net
    127.0.0.22 www.compactbyte.net
    127.0.0.22 compactbyte.org
    127.0.0.22 www.compactbyte.org
    127.0.0.22 blog.compactbyte.com
    127.0.0.22 www.blog.compactbyte.com
    127.0.0.22 blog.compactbyte.net
    127.0.0.22 www.blog.compactbyte.net
    127.0.0.22 blog.compactbyte.org
    127.0.0.22 www.blog.compactbyte.org
    127.0.0.22 blogs.compactbyte.com
    127.0.0.22 www.blogs.compactbyte.com
    127.0.0.22 blogs.compactbyte.net
    127.0.0.22 www.blogs.compactbyte.net
    127.0.0.22 blogs.compactbyte.org
    127.0.0.22 www.blogs.compactbyte.org
    
    
18. Attempts to end processes that have the following names:
    
    
    • ahnlab
    • aladdin
    • Alicia
    • Anti
    • ash
    • ashmaisv
    • aswupdsv
    • avast
    • avg
    • bitdef
    • ccapps
    • cclaw
    • cillin
    • ctfmon
    • Dian
    • diary
    • foto
    • hijack
    • iexplorer
    • kangen
    • kill
    • lexplorer
    • machine
    • Mariana
    • mcaf
    • mcv
    • movzx
    • mspatch
    • nipsvc
    • njeeves
    • nod32
    • nopdb
    • nvcoas
    • opscan
    • panda
    • peid
    • poproxy
    • remove
    • riyani
    • services.com
    • siti
    • sstray
    • sysinter
    • syslove
    • systray
    • trend
    • tskmgr
    • untukmu
    • update
    • virus
    • vptray
    • washer
    • wscript
    • xpshare
    • zlh
      
      
19. Attempts to end applications that have the following window titles:
    
    
    • task manager
    • baca bro !!!
    • registry
    • command prompt
    • system configuration
    • group policy
    • cmd.exe
    • computer management
    • scheduled task
    • killbox
    • hijack
    • SYSINTERNAL
    • PROCESS EXP
    • REMOVER
    • CLEANER
    • anti
    • washer
    • ertanto
    • BROWNIES
    • movzx
    • killer
    • pcmedia
    • pc-media
    • rontok
    • rontox
    • robknot
    • commander
    • windows script
    • norman
    • norton
    • symantec
    • cillin
    • trendmicro
    • bitdef
    • kaspersky
    • avg
    • avira
    • virus
    • trojan
    • worm
    • mcafee
    • b.e
    • folder option
    • wintask
    • alwil
    • sex
    • porn
    • naked
    • cewe
    • bugil
    • telanjang
    • nod32
    • task view
    • peid
    • ahnlab
      
      
20. Gathers email addresses from files with the following extensions on all local drives from C to Y:
    
    
    • .BAT
    • .PIF
    • .COM
    • .SCR
    • .EXE
    • .PPT
    • .XLS
    • .DOC
    • .CFM
    • .PHP
    • .ASP
    • .WAB
    • .EML
    • .CSV
    • .HTML
    • .HTM
    • .TXT
      
      The worm will not send itself to email addresses that contain any of the following strings in the domain name:
      
      
    • BILLING@
    • INFO@
    • CONTOH
    • EXAMPLE
    • SMTP
    • XXX
    • TEST
    • NETWORK
    • SOURCE
    • PROGRAM
    • WWW
    • ASDF
    • SOME
    • YOUR
    • BLAH
    • SPAM
    • SOFT
    • PANDA
    • NORMAN
    • NORTON
    • ASSOCIATE
    • SYMANTEC
    • SECURITY
    • CILLIN
    • GRISOFT
    • AVG
    • LINUX
    • CRACK
    • HACK
    • VIRUS
    • MICROSOFT
    • MASTER
    • SUPPORT
    • SECURE
    • UPDATE
    • DEVELOP
    • VAKSIN
    • SATU
    • EMAILKU
    • BOLEH
    • GAUL
    • ASTAGA
    • .WEB.ID
    • .AC.ID
    • .OR.ID
    • .NET.ID
    • .SCH.ID
    • .MIL.ID
    • .GO.ID
    • .CO.ID
    • INDO
    • TELKOM
    • PLASA
      
      
21. Appends the following prefixes to domain names in an attempt to find Simple Mail Transfer Protocol (SMTP) servers:
    
    
    • ns1.
    • mail.
    • smtp.
      
      
22. Uses its own SMTP engine to send itself to the email addresses that it finds. The email has the following characteristics:
    
    From: [SPOOFED]
    
    Subject:
    One of the following:
    
    
    • My Best Photo
    • Fotoku yg Paling Cantik
      
      Message:
      One of the following:
      
      
    • Hi,
      I want to share my photo with you.
      Wishing you all the best.
      Regards,
    • Hi,
      Aku lg iseng aja pengen kirim foto ke kamu.
      Jangan lupain aku ya !.
      Thanks,
      
      Attachment:
      Photo.zip

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
• If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Restart the computer using the Windows Recovery Console
2. Disable System Restore (Windows Me/XP).
3. Remove all the entries that the risk added to the hosts file.
4. Update the virus definitions.
5. Run a full system scan.
6. Delete any values added to the registry.
   

1. Insert the Windows XP CD-ROM into the CD-ROM drive.
2. Restart the computer from the CD-ROM drive.
3. Press R to start the Recovery Console when the "Welcome to Setup" screen appears.
4. Select the installation that you want to access from the Recovery Console.
5. Enter the administrator password and press Enter.
6. Delete the following files:
   
   
   • %Windir%\j[RANDOM].exe
   • %Windir%\o[RANDOM].exe
   • %Windir%\_default[RANDOM].pif
   • %System%\c_[RANDOM]k.com
   • %Windir%\Tasks\At1.job
   • %Windir%\Tasks\At2.job
   • csrss.exe
   • lsass.exe
   • services.exe
   • smss.exe
   • winlogon.exe
   • m[RANDOM].exe
   • zh59[RANDOM].exe
   • yesbron.com
   • qm[RANDOM].exe
   • %System%\[RANDOM]
   • %Windir%\[RANDOM]
     
7. Type exit
8. Press Enter. The computer will now restart automatically.
   
   

• How to disable or enable Windows Me System Restore
• How to turn off or turn on Windows XP System Restore

1. Navigate to the following location:
   
   
   • Windows 95/98/Me:
     %Windir%
   • Windows NT/2000/XP:
     %Windir%\System32\drivers\etc
     
     Notes:
   • The location of the hosts file may vary and some computers may not have this file. There may also be multiple copies of this file in different locations. If the file is not located in these folders, search your disk drives for the hosts file, and then complete the following steps for each instance found.
   • %Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows (Windows 95/98/Me/XP) or C:\Winnt (Windows NT/2000).
     
     
2. Double-click the hosts file.
3. If necessary, deselect the "Always use this program to open this program" check box.
4. Scroll through the list of programs and double-click Notepad.
5. When the file opens, delete all the entries added by the risk. (See the Technical Details section for a complete list of entries.)
6. Close Notepad and save your changes when prompted.
   
   

• Running LiveUpdate, which is the easiest way to obtain virus definitions:
  • If you use Norton AntiVirus 2006, Symantec AntiVirus Corporate Edition 10.0, or newer products, LiveUpdate definitions are updated daily. These products include newer technology.
  • If you use Norton AntiVirus 2005, Symantec AntiVirus Corporate Edition 9.0, or earlier products, LiveUpdate definitions are updated weekly. The exception is major outbreaks, when definitions are updated more often.
• Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to Virus Definitions (Intelligent Updater).
  
  The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions. For detailed instructions read the document: How to update virus definition files using the Intelligent Updater.
• 
  
  

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
   • For Norton AntiVirus consumer products: Read the document: How to configure Norton AntiVirus to scan all files.
   • For Symantec AntiVirus Enterprise products: Read the document: How to verify that a Symantec Corporate antivirus product is set to scan all files.
2. Run a full system scan.
3. If any files are detected, follow the instructions displayed by your antivirus program.

1. Click Start > Run.
2. Type regedit
3. Click OK.
   
   Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.
   
   
4. Navigate to the subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
   
   
5. In the right pane, delete the value:
   
   "f3444Adm" = ""%UserProfile%\Local Settings\Application Data\dv[RANDOM]0x\yesbron.com""
   
   
6. Navigate to the subkey:
   
   HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
   
   
7. In the right pane, delete the value:
   
   "f3444Adm" = ""%System%\s[RANDOM]\zh59[RANDOM].exe""
   
   
8. Navigate to the subkey:
   
   HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\policies\Explorer\Run
   
   
9. In the right pane, delete the value:
   
   "N7593c" = "%Windir%\_default[RANDOM].pif"
   
   
10. Navigate to the subkey:
    
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    
    
11. In the right pane, delete the value:
    
    "N7593c" = "%Windir%\j[RANDOM].exe"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
    \Control\SafeBoot\"AlternateShell" = "c_[RANDOM]k.com"
    
    
12. Navigate to and delete the subkey:
    
    HKEY_CURRENT_USER\Software\Brontok
    
    
13. Navigate to the subkey:
    
    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon
    
    
14. In the right pane, reset the values:
    
    "Userinit" = "%System%\userinit.exe,%Windir%\j[RANDOM].exe"
    "Shell" = "Explorer.exe "%Windir%\o[RANDOM].exe""
    
    to:
    
    "Userinit" = "%System%\userinit.exe"
    "Shell" = "Explorer.exe"
    
    
15. Navigate to the subkey:
    
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
    
    
16. In the right pane, reset the values to their original values if known:
    
    "Hidden" = "0"
    "HideFileExt" = "1"
    "ShowSuperHidden" = "0"
    
    
17. Navigate to the subkey:
    
    HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
    
    
18. In the right pane, reset the value to its original value if known:
    
    "DisableRegistryTools" = "1"
    
    
19. Exit the Registry Editor.