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Trojan.AVKill.36822

Added to the Dr.Web virus database: 2015-05-01

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'AVSvc' = '%APPDATA%\Roaming\ithoqwy.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'AVSvc' = '%APPDATA%\Roaming\ithoqwy.exe'
Malicious functions:
Creates and executes the following:
  • '%APPDATA%\Roaming\ithoqwy.exe'
Executes the following:
  • '<SYSTEM32>\svchost.exe' -k swprv
  • '<SYSTEM32>\vssvc.exe'
  • '<SYSTEM32>\vssadmin.exe' delete shadows /all /Quiet
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\cmd.exe
the following user processes:
  • ecmd.exe
Modifies file system :
Creates the following files:
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_vcredist.exe_d9a1e9f8957f63aeacd7527a3c66aa52491cfb82_cab_097b4098\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_vc6redistsetup_e_81f683eaf25a5eb65b84b6ead9f13c45a48e7d43_cab_097aefca\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_x86_30b340eb8e02812f59aa5726f432f9eb8f4453d_05d6c428\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_x86_f798d2f057d38094f597ee5b2ac850417ab4a15d_cab_06ed1b9a\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_x86_30b340eb8e02812f59aa5726f432f9eb8f4453d_cab_04570da6\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Templates\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\NonCritical_7.6.7600.256_fa9f59c145989d6f0b41711f5b2db0e982417_cab_06aa7c03\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportArchive\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\ReportQueue\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\LocalCopy\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Definition Updates\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Quarantine\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\CleanStore\ResourceData\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\CleanStore\Entries\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\WER\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Definition Updates\Backup\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Definition Updates\{530E0921-A5E7-41DC-809D-0892C07A16A6}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Definition Updates\Updates\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Tablet PC\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\System Tools\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Administrative Tools\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Sqm\Sessions\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Sqm\Manifest\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Sqm\Upload\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Accessories\Accessibility\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Sqm\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Far Manager 3\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\QIP 2012\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Steam\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Total Commander\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Tablet PC\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Google Chrome\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Games\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Java\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Notepad++\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Maintenance\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\{6c95b50e-cb5a-4a1f-a7b4-8a6004f8dd6a}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\{615bc16d-60f5-482e-91b3-b51d8130963b}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\{f0080ca2-80ae-4958-b6eb-e8fa916d744a}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Sun\Java\Java Update\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\WwanSvc\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Oracle\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\{2af972c7-13b0-4978-92a8-fee26a4fb4e9}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Package Cache\{01db25f3-1b76-4d97-88c8-1c90634d88fb}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Sun\Java\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Microsoft\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Microsoft\Windows\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Temp\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Roaming\Media Center Programs\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Sun\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Microsoft\Windows\History\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Microsoft\Windows\Temporary Internet Files\HELP_TO_SAVE_FILES.txt
  • C:\Users\Default\AppData\Local\Microsoft\Windows\GameExplorer\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\History\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\History\Store\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Support\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\CleanStore\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\CleanStore\Resources\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\History\CacheManager\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\History\Service\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows Defender\Scans\History\Results\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\ActivityLog\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\VirtualInbox\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\VirtualInbox\en-US\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSScan\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\Common Coverpages\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\Common Coverpages\en-US\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\Inbox\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\SentItems\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows NT\MSFax\Queue\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\RSA\S-1-5-18\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\RSA\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Assistance\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Assistance\Client\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\DSS\MachineKeys\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\Keys\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Crypto\DSS\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Device\{8702d817-5aad-4674-9ef3-4d3decd87120}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Task\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\DeviceSync\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\DRM\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\DRM\Server\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Task\{07deb856-fc6e-4fb9-8add-d8f2cf8722c9}\en-US\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Device\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Task\{07deb856-fc6e-4fb9-8add-d8f2cf8722c9}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Device Stage\Task\{e35be42d-f742-4d96-a50a-1775fb1a7a42}\en-US\HELP_TO_SAVE_FILES.txt
  • <Current directory>\HELP_TO_SAVE_FILES.txt
  • C:\$Recycle.Bin\HELP_TO_SAVE_FILES.txt
  • C:\Users\HELP_TO_SAVE_FILES.txt
  • C:\PerfLogs\HELP_TO_SAVE_FILES.txt
  • C:\PerfLogs\Admin\HELP_TO_SAVE_FILES.txt
  • %APPDATA%\Roaming\key.dat
  • %APPDATA%\Roaming\ithoqwy.exe
  • %HOMEPATH%\Documents\RECOVERY_FILE.TXT
  • C:\$Recycle.Bin\S-1-5-21-2832440558-3064306045-1455513625-1000\HELP_TO_SAVE_FILES.txt
  • %APPDATA%\Roaming\log.html
  • C:\Recovery\1f81b231-1de2-11e4-b170-f6484b474a13\HELP_TO_SAVE_FILES.txt
  • C:\Users\Public\Documents\HELP_TO_SAVE_FILES.txt
  • C:\Users\Public\Desktop\HELP_TO_SAVE_FILES.txt
  • C:\Users\Public\Favorites\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Assistance\Client\1.0\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Assistance\Client\1.0\en-US\HELP_TO_SAVE_FILES.txt
  • <Auxiliary element>
  • C:\Recovery\HELP_TO_SAVE_FILES.txt
  • C:\totalcmd\LANGUAGE\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\HELP_TO_SAVE_FILES.txt
  • C:\totalcmd\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Temp\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\User Account Pictures\Default Pictures\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\SecStore\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\PropMap\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\User Account Pictures\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\DRM\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\DRM\Cache\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\GameExplorer\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Ringtones\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Power Efficiency Diagnostics\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\AIT\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Vault\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\Caches\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\DeviceMetadataStore\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Windows\DeviceMetadataStore\en-US\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\NetFramework\BreadcrumbStore\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\MF\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\NetFramework\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Network\Downloader\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Network\Connections\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\eHome\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\eHome\logs\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\IdentityCRL\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Media Player\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\IlsCache\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Network\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\GatherLogs\SystemIndex\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Config\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\GatherLogs\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\Indexer\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\Indexer\CiFiles\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\RAC\PublishedData\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\RAC\Outbound\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\RAC\StateData\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\RAC\HELP_TO_SAVE_FILES.txt
  • C:\ProgramData\Microsoft\RAC\Temp\HELP_TO_SAVE_FILES.txt
Deletes itself.
Network activity:
UDP:
  • DNS ASK dp########7lelsa.aenf387awmx28.com
  • DNS ASK dp########7lelsa.od9wjn4iene29.com
  • DNS ASK ip##fo.io
  • DNS ASK dn#.##ftncsi.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android