W32.Ackantta.H@mm

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Discovered: October 06, 2010
Updated: October 06, 2010 2:52:01 PM
Type: Virus
Infection Length: 323,584 bytes
Systems Affected: Windows

W32.Ackantta.H@mm is a worm that spreads by sending itself to email addresses gathered from the compromised computer.


W32.Ackantta.H may infect certain files with .exe and .msi extensions. The infected files are self-extracting cabinet files that contain legitimate files, and a copy of W32.Ackantta.H@mm. These infected files are detected as W32.Ackannta!dr .

For more information, please see the following resource:
W32.Ackantta@mm
Blog entries on W32.Ackantta

Antivirus Protection Dates

  • Initial Rapid Release version October 05, 2010 revision 032
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version October 05, 2010 revision 039
  • Latest Daily Certified version May 15, 2012 revision 004
  • Initial Weekly Certified release date October 06, 2010

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Piotr Krysiuk

Discovered: October 06, 2010
Updated: October 06, 2010 2:52:01 PM
Type: Virus
Infection Length: 323,584 bytes
Systems Affected: Windows

When the worm is executed, it creates the following Mutex to ensure that only one copy of the worm is running:
HPWuSchdj.exeDm28sf0V@XK$NX8hOu

It then creates the following registry subkeys:

  • HKEY_CURRENT_USER\Software\HP35
  • HKEY_LOCAL_MACHINE\Software\HP35


The worm sets the following registry values:
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\"hke8" = "[STRING]"
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\"hke9" = "[STRING]"
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"HP Software Updater v1.4" = "[PATH TO EXECUTABLE]"
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\"[PATH TO EXECUTABLE]" = "[PATH TO EXECUTABLE]:*:Enabled:Explorer"


It also modifies the following registry entries:
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\"datarecovery" = "1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\"UACDisableNotify" = "1"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\"EnableLUA"="0"


The worm attempts to delete any of the following registry entries:
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"APVXDWIN"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"avast!"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"AVG8_TRAY"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"AVP"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"BDAgent"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"CAVRID"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"cctray"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"DrWebScheduler"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"egui"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"F-PROT Antivirus Tray application"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"ISTray"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"K7SystemTray"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"K7TSStart"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"McENUI"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"MskAgentexe"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"OfficeScanNT Monitor"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"RavTask"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"SBAMTray"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"sbamui"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"SCANINICIO"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"Spam Blocker for Outlook Express"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"SpamBlocker"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"SpIDerMail"
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run\"Windows Defender"


The worm attempts to delete the following services:
  • AntiVirSchedulerService
  • antivirservice
  • Arrakis3
  • aswupdsv
  • avast! Antivirus
  • avast! Mail Scanner
  • avast! Web Scanner
  • avg8emc
  • avg8wd
  • AVP
  • bdss
  • CaCCProvSP
  • ccEvtMgr
  • ccproxy
  • ccpwdsvc
  • ccsetmgr
  • Ehttpsrv
  • ekrn
  • Emproxy
  • ERSvc
  • FPAVServer
  • GWMSRV
  • K7EmlPxy
  • K7RTScan
  • K7TSMngr
  • LIVESRV
  • LiveUpdate Notice Service
  • liveupdate
  • MBAMService
  • McAfee HackerWatch Service
  • mcmisupdmgr
  • mcmscsvc
  • MCNASVC
  • mcODS
  • mcpromgr
  • mcproxy
  • mcredirector
  • mcshield
  • mcsysmon
  • MPFSERVICE
  • MPS9
  • msk80service
  • navapsvc
  • Norton AntiVirus
  • npfmntor
  • nscservice
  • PANDA SOFTWARE CONTROLLER
  • PAVFNSVR
  • PAVPRSRV
  • PAVSVR
  • PSHOST
  • PSIMSVC
  • PSKSVCRETAIL
  • RSCCenter
  • RSRavMon
  • Savadminservice
  • SAVScan
  • Savservice
  • sbamsvc
  • scan
  • sdauxservice
  • sdcodeservice
  • sndsrvc
  • Sophos Agent
  • Sophos Autoupdate Service
  • Sophos Certification Manager
  • Sophos Management Service
  • Sophos Message Router
  • spbbcsvc
  • SUM
  • Symantec Core LC
  • ThreatFire
  • TPSRV
  • VSSERV
  • WerSvc
  • WinDefend
  • wscsvc
  • XCOMM


The worm attempts to end the following processes:
  • AlMon.exe
  • ALSvc.exe
  • APvxdwin.exe
  • ashdisp.exe
  • ashserv.exe
  • avcenter.exe
  • avciman.exe
  • AVENGINE.exe
  • avgcsrvx.exe
  • avgemc.exe
  • avgnt.exe
  • avgrsx.exe
  • avgtray.exe
  • avguard.exe
  • avgui.exe
  • avgwdsvc.exe
  • avp.exe
  • avp.exe
  • bdagent.exe
  • bdss.exe
  • CCenter.exe
  • ccsvchst.exe
  • drweb32w.exe
  • drwebupw.exe
  • egui.exe
  • ekrn.exe
  • emproxy.exe
  • FPAVServer.exe
  • FprotTray.exe
  • FPWin.exe
  • guardgui.exe
  • HWAPI.exe
  • iface.exe
  • isafe.exe
  • K7EmlPxy.exe
  • K7RTScan.exe
  • K7SysTry.exe
  • K7TSecurity.exe
  • K7TSMngr.exe
  • livesrv.exe
  • mbam.exe
  • mcagent.exe
  • mcmscsvc.exe
  • McNASvc.exe
  • mcods.exe
  • mcpromgr.exe
  • McProxy.exe
  • Mcshield.exe
  • mcsysmon.exe
  • mcvsshld.exe
  • MpfSrv.exe
  • mps.exe
  • mskagent.exe
  • msksrver.exe
  • NTRtScan.exe
  • Pavbckpt.exe
  • PavFnSvr.exe
  • PavPrSrv.exe
  • PAVSRV51.exe
  • pccnt.exe
  • PSCtrlS.exe
  • PShost.exe
  • PsIMSVC.exe
  • psksvc.exe
  • Rav.exe
  • RavMon.exe
  • RavmonD.exe
  • RavStub.exe
  • RavTask.exe
  • RedirSvc.exe
  • SavAdminService.exe
  • SavMain.exe
  • SavService.exe
  • sbamtray.exe
  • sbamui.exe
  • SbeConsole.exe
  • seccenter.exe
  • spidergui.exe
  • SrvLoad.exe
  • TmListen.exe
  • TPSRV.exe
  • vetmsg.exe
  • vsserv.exe
  • Webproxy.exe
  • xcommsvr.exe


The worm attempts to delete the mcshield.exe file from folder listed in the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\McAfee\AVEngine\"szInstallDir"

It also attempts to delete all files from folder listed in the following registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Malwarebytes' Anti-Malware\"InstallPath"

It also searches all shared drives for files with the .exe or .msi extensions that contain one of the following strings in the file name, replacing them with infected self-extracting cabinet files:
  • activa
  • crack
  • inst
  • keygen
  • setup


Note: The self-extracting cabinet files contain the worm and also copy of .exe or .msi files that it replaces. These files will be detected as W32.Ackantta!Dr .

The worm copies itself into the following folders:
  • C:\Downloads\
  • C:\program files\emule\incoming\
  • C:\program files\grokster\my grokster\
  • C:\program files\icq\shared folder\
  • C:\program files\limewire\shared\
  • C:\program files\morpheus\my shared folder\
  • C:\program files\tesla\files\
  • C:\program files\winmx\shared\


The worm also copies itself to shared folders for the following file-sharing applications:
  • DCPlusPlus
  • Frostwire
  • Kazaa


It copies itself to these folders using the following file names:
  • Absolute Video Converter 6.2.exe
  • Ad-aware 2010.exe
  • Adobe Acrobat Reader keygen.exe
  • Adobe Illustrator CS4 crack.exe
  • Adobe Photoshop CS4 crack.exe
  • Alcohol 120 v1.9.7.exe
  • Anti-Porn v13.5.12.29.exe
  • AnyDVD HD v.6.3.1.8 Beta incl crack.exe
  • Ashampoo Snap 3.02.exe
  • Avast 4.8 Professional.exe
  • BitDefender AntiVirus 2010 Keygen.exe
  • Blaze DVD Player Pro v6.52.exe
  • CleanMyPC Registry Cleaner v6.02.exe
  • Daemon Tools Pro 4.11.exe
  • Divx Pro 7 + keymaker.exe
  • Download Accelerator Plus v9.exe
  • Download Boost 2.0.exe
  • DVD Tools Nero 10.5.6.0.exe
  • G-Force Platinum v3.7.5.exe
  • Google SketchUp 7.1 Pro.exe
  • Grand Theft Auto IV (Offline Activation).exe
  • Image Size Reducer Pro v1.0.1.exe
  • Internet Download Manager V5.exe
  • K-Lite Mega Codec v5.5.1.exe
  • K-Lite Mega Codec v5.6.1 Portable.exe
  • Kaspersky AntiVirus 2010 crack.exe
  • Kaspersky Internet Security 2010 keygen.exe
  • LimeWire Pro v4.18.3.exe
  • Magic Video Converter 8 0 2 18.exe
  • McAfee Total Protection 2010.exe
  • Microsoft.Windows 7 ULTIMATE FINAL activator+keygen x86.exe
  • Motorola, nokia, ericsson mobil phone tools.exe
  • Mp3 Splitter and Joiner Pro v3.48.exe
  • Myspace theme collection.exe
  • Nero 9 9.2.6.0 keygen.exe
  • Norton Anti-Virus 2010 Enterprise Crack.exe
  • Norton Internet Security 2010 crack.exe
  • PDF-XChange Pro.exe
  • PDF password remover (works with all acrobat reader).exe
  • PDF to Word Converter 3.0.exe
  • PDF Unlocker v2.0.3.exe
  • Power ISO v4.2 + keygen axxo.exe
  • Rapidshare Auto Downloader 3.8.exe
  • RapidShare Killer AIO 2010.exe
  • Sophos antivirus updater bypass.exe
  • Starcraft2 Crack.exe
  • Starcraft2 keys.txt.exe
  • Starcraft2 Oblivion DLL.exe
  • Starcraft2 Patch v0.2.exe
  • Starcraft2.exe
  • Super Utilities Pro 2009 11.0.exe
  • Total Commander7 license+keygen.exe
  • Trojan Killer v2.9.4173.exe
  • Tuneup Ultilities 2010.exe
  • Twitter FriendAdder 2.1.1.exe
  • VmWare 7.0 keygen.exe
  • VmWare keygen.exe
  • Winamp.Pro.v7.33.PowerPack.Portable+installer.exe
  • Windows 2008 Enterprise Server VMWare Virtual Machine.exe
  • Windows 2008 Enterprise Server VMWare Virtual Machine.exe
  • Windows 7 Ultimate keygen.exe
  • Windows XP PRO Corp SP3 valid-key generator.exe
  • Windows2008 keygen and activator.exe
  • WinRAR v3.x keygen RaZoR.exe
  • WinRAR v3.x keygen RaZoR.exe
  • Youtube Music Downloader 1.0.exe
  • YouTubeGet 5.4.exe


The worm copies the following files to removable drives, with the System, Hidden and Read-only attributes set:
  • %DriveLetter%\RECYCLER\S-1-6-21-2434476521-1645641927-702000330-1542\redmond.exe
  • %DriveLetter%\autorun.inf


The worm checks if IIS or Apache Web servers are present on the affected computer and, if found, attempts to modify the main page to contain the following message and a link to download copy of the worm:

Security warning!
Your browser affected by the DirectAnimation Path ActiveX vulnerability.
Please install the following MS09-092 hotfix in order to be able to watch this website.

The worm sends an HTTP request to whatismyip.com to determine the IP address of the compromised computer. It then checks the domain name of this address and retrieves the related Whois information. The worm extracts email address from the Whois record.

The worm searches all disks for files with the following extensions and extracts email addresses from them:
  • .asp
  • .dbx
  • .doc
  • .htm
  • .log
  • .lst
  • .nfo
  • .php
  • .rtf
  • .txt
  • .wab
  • .wpd
  • .wps
  • .xls
  • .xml


The worm will send emails with the following characteristics to these addresses:

From:
(One of the following)
  • e-cards@hallmark.com
  • invitations@twitter.com
  • invitations@hi5.com
  • order-update@amazon.com
  • resume-thanks@google.com
  • update@facebookmail.com


Subject:
(One of the following)
  • You have received A Hallmark E-Card!
  • Your friend invited you to Twitter!
  • Laura would like to be your friend on hi5!
  • Shipping update for your Amazon.com order
  • Thank you from Google!
  • You have got a new message on Facebook!


Attachment:
(One of the following)
  • Postcard.zip
  • Invitation Card.zip
  • Shipping documents.zip
  • CV-20100120-112.zip
  • Facebook message.zip


The worm avoids sending emails with the following user name strings:
  • abuse
  • anyone
  • bugs
  • ca
  • contact
  • gold-certs
  • help
  • info
  • me
  • no
  • nobody
  • noone
  • not
  • nothing
  • page
  • postmaster
  • privacy
  • rating
  • root
  • sales
  • samples
  • secur
  • service
  • site
  • soft
  • somebody
  • someone
  • spm
  • submit
  • the.bat
  • webmaster
  • you
  • your
  • www
  • admin
  • bsd
  • certific
  • icrosoft
  • linux
  • listserv
  • ntivi
  • security
  • spam
  • support
  • unix
  • websense


It also avoids sending itself to email addresses with domains that contain the following strings:
  • .gov
  • .mil
  • acd-group
  • acdnet.com
  • acdsystems.com
  • acketst
  • ahnlab
  • alcatel-lucent.com
  • apache
  • arin.
  • avg.comsysinternals
  • avira
  • badware
  • berkeley
  • bitdefender
  • bluewin.ch
  • borlan
  • bpsoft.com
  • bsd
  • buyrar.com
  • cisco
  • clamav
  • debian
  • drweb
  • eset.com
  • example
  • f-secure
  • fido
  • firefox
  • fsf.
  • ghisler.com
  • gimp
  • gnu
  • gov.
  • honeynet
  • honeypot
  • iana
  • ibm.com
  • idefense
  • ietf
  • ikarus
  • immunityinc.com
  • inpris
  • isc.o
  • isi.e
  • jgsoft
  • kaspersky
  • kernel
  • lavasoft
  • linux
  • mcafee
  • messagelabs
  • mit.e
  • mozilla
  • mydomai
  • nodomai
  • novirusthanks
  • nullsoft.org
  • panda
  • pgp
  • prevx
  • qualys
  • quebecor.com
  • redhat
  • rfc-ed
  • ruslis
  • samba
  • secur
  • security
  • sendmail
  • slashdot
  • sopho
  • sourceforge
  • ssh.com
  • sun.com
  • suse
  • syman
  • tanford.e
  • unix
  • usenet
  • utgers.ed
  • virus
  • virusbuster
  • winamp
  • winpcap
  • wireshark
  • www.ca.com

Recommendations

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

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • 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.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a 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.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. 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.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.

Writeup By: Piotr Krysiuk

Discovered: October 06, 2010
Updated: October 06, 2010 2:52:01 PM
Type: Virus
Infection Length: 323,584 bytes
Systems Affected: Windows

You may have arrived at this page either because you have been alerted by your Symantec product about this risk, or you are concerned that your computer has been affected by this risk.

Before proceeding further we recommend that you run a full system scan . If that does not resolve the problem you can try one of the options available below.



FOR NORTON USERS
If you are a Norton product user, we recommend you try the following resources to remove this risk.

Removal Tool


If you have an infected Windows system file, you may need to replace them using from the Windows installation CD .


How to reduce the risk of infection
The following resources provide further information and best practices to help reduce the risk of infection.


FOR BUSINESS USERS
If you are a Symantec business product user, we recommend you try the following resources to remove this risk.

Identifying and submitting suspect files
Submitting suspicious files to Symantec allows us to ensure that our protection capabilities keep up with the ever-changing threat landscape. Submitted files are analyzed by Symantec Security Response and, where necessary, updated definitions are immediately distributed through LiveUpdate™ to all Symantec end points. This ensures that other computers nearby are protected from attack. The following resources may help in identifying suspicious files for submission to Symantec.


Removal Tool

If you have an infected Windows system file, you may need to replace them using from the Windows installation CD .


How to reduce the risk of infection
The following resource provides further information and best practices to help reduce the risk of infection.
Protecting your business network



MANUAL REMOVAL
The following instructions pertain to all current Symantec antivirus products.

1. Performing a full system scan
How to run a full system scan using your Symantec product


2. Restoring settings in the registry
Many risks make modifications to the registry, which could impact the functionality or performance of the compromised computer. While many of these modifications can be restored through various Windows components, it may be necessary to edit the registry. See in the Technical Details of this writeup for information about which registry keys were created or modified. Delete registry subkeys and entries created by the risk and return all modified registry entries to their previous values.

Writeup By: Piotr Krysiuk