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Exploit.Siggen3.41001

Added to the Dr.Web virus database: 2023-03-01

Virus description added:

Technical Information

Malicious functions
Executes the following (exploit)
  • '%ProgramFiles%\microsoft office\office14\clview.exe' "EXCEL" "Microsoft Excel"
Modifies file system
Creates the following files
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mvalidator.lck
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\page-lsh.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\page-lsd[1].png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\page-lsd.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\clv14titlebarbg[1].png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clv14titlebarbg.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\bullet[1].png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\page-rsd[1].png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\bullet.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\page-lsh[1].png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\cvglobalstrings.xml
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\cvglobal.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\clvimagepanemedia[1].jpg
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clvimagepanemedia.jpg
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\offlineclientviewer[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\offlineclientviewer.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\offlineclientviewer[1].xml
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\cvglobalstrings[1].xml
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\offlineclientviewer.xml
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\cvglobal[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\page-rsd.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\page-rsh.png
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\page-rsh[1].png
  • %TEMP%\imtcdb1.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mvalidator.hxd
  • %TEMP%\imtcdb2.tmp
  • %TEMP%\imtcdb3.tmp
  • %TEMP%\imtcdc4.tmp
  • %TEMP%\imtcdc5.tmp
  • %TEMP%\imtce14.tmp
  • %TEMP%\imtcd52.tmp
  • %TEMP%\imtce24.tmp
  • %TEMP%\imtce26.tmp
  • %TEMP%\imtce27.tmp
  • %TEMP%\imtce38.tmp
  • %TEMP%\imtce97.tmp
  • %TEMP%\imtce98.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\localhelp[1].txt
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\localhelp.txt
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\ontrtl[1].css
  • %TEMP%\imtce25.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\ontrtl.css
  • %TEMP%\imtcd31.tmp
  • %TEMP%\imtcd81.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\clvgraybg[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\clvtitlebg[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\next.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\message[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\message.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\logo[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\logo.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\helpid[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\helpid.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\next2.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\next[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\help[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\errexcl.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\bulletl[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\bulletl.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\back2[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\back2.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\back[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\back.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\help.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\errexcl[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\next2[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\online[1].gif
  • %TEMP%\imtcba4.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clvtitlebg.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\contenthxs[1].css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\contenthxs.css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\script[1].js
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\script.js
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\ont[1].css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\ont.css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\toc[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\toc.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\re1n75kr\tbgradient[1].gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\tbgradient.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\0u8lpyu9\search[1].xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\search.xsl
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\office12[1].js
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\office12.js
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\content[1].css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\content.css
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clvgraybg.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clvbluebg.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\caasbycl\clvbluebg[1].gif
  • %TEMP%\imtcd30.tmp
  • %TEMP%\imtcd20.tmp
  • %TEMP%\imtcd0f.tmp
  • %TEMP%\imtc450.tmp
  • %TEMP%\imtc461.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mkwd_k.hxw
  • %TEMP%\imtc481.tmp
  • %TEMP%\imtc492.tmp
  • %TEMP%\imtc493.tmp
  • %TEMP%\imtc3f0.tmp
  • %TEMP%\imtc494.tmp
  • %TEMP%\imtc440.tmp
  • %TEMP%\imtc4d4.tmp
  • %TEMP%\imtc505.tmp
  • %TEMP%\imtc525.tmp
  • %TEMP%\imtc545.tmp
  • %TEMP%\imtc556.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mvalidator.hxd
  • %TEMP%\imtc566.tmp
  • %TEMP%\imtc4a4.tmp
  • %TEMP%\imtc3cf.tmp
  • %TEMP%\imtc4f4.tmp
  • %TEMP%\imtc3bf.tmp
  • %TEMP%\imtc312.tmp
  • %TEMP%\imtc18b.tmp
  • %TEMP%\imtc19b.tmp
  • %TEMP%\imtc19c.tmp
  • %TEMP%\imtc19d.tmp
  • %TEMP%\imtc1ae.tmp
  • %TEMP%\imtc1ce.tmp
  • %TEMP%\imtc1df.tmp
  • %TEMP%\imtc1e0.tmp
  • %TEMP%\imtc1f0.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mtoc_excel_col.hxh
  • %TEMP%\imtc201.tmp
  • %TEMP%\imtc261.tmp
  • %TEMP%\imtc271.tmp
  • %TEMP%\imtc2a1.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mkwd_f.hxw
  • %TEMP%\imtc2e0.tmp
  • %TEMP%\imtc301.tmp
  • %TEMP%\imtc311.tmp
  • %TEMP%\imtc567.tmp
  • %TEMP%\imtc212.tmp
  • %TEMP%\imtc578.tmp
  • %TEMP%\imtc41f.tmp
  • %TEMP%\imtc579.tmp
  • %TEMP%\imtcbd6.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mkwd_f.hxw
  • %TEMP%\imtcbf7.tmp
  • %TEMP%\imtcbf8.tmp
  • %TEMP%\imtcc09.tmp
  • %TEMP%\imtcc0a.tmp
  • %TEMP%\imtcc1a.tmp
  • %TEMP%\imtcc1b.tmp
  • %TEMP%\imtcc5b.tmp
  • %TEMP%\imtcc9a.tmp
  • %TEMP%\imtccab.tmp
  • %TEMP%\imtccbb.tmp
  • %TEMP%\imtccdb.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mkwd_k.hxw
  • %TEMP%\imtccec.tmp
  • %TEMP%\imtcced.tmp
  • %TEMP%\imtccfe.tmp
  • %TEMP%\imtccff.tmp
  • %TEMP%\imtcbc5.tmp
  • %TEMP%\imtc58a.tmp
  • %TEMP%\imtcbe6.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\online.gif
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\browse0.excel.dev.xml
  • %TEMP%\imtcb74.tmp
  • %TEMP%\imtc59b.tmp
  • %TEMP%\imtc59c.tmp
  • %TEMP%\imtc59d.tmp
  • %TEMP%\imtc5ae.tmp
  • %TEMP%\imtc5ce.tmp
  • %TEMP%\imtc5cf.tmp
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\content.ie5\bzjx5bke\clientviewersettings[1].xml
  • %LOCALAPPDATA%\microsoft\windows\<INETFILES>\msofficehelp14\mohc5ff.tmp\clientviewersettings.xml
  • %TEMP%\imtc59a.tmp
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mvalidator.lck
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mtoc_excel.dev_col.hxh
  • %TEMP%\imtcb2f.tmp
  • %TEMP%\imtcb3f.tmp
  • %TEMP%\imtcb40.tmp
  • %TEMP%\imtcb41.tmp
  • %TEMP%\imtcb62.tmp
  • %TEMP%\imtcb63.tmp
  • %TEMP%\imtcb73.tmp
  • %TEMP%\imtcb1e.tmp
  • %TEMP%\imtcbb5.tmp
  • %LOCALAPPDATA%\microsoft\windows\history\history.ie5\mshist012023030120230302\index.dat
Sets the 'hidden' attribute to the following files
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mtoc_excel_col.hxh
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mkwd_f.hxw
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mkwd_k.hxw
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.14.1033_1033_mvalidator.hxd
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mtoc_excel.dev_col.hxh
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mkwd_f.hxw
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mkwd_k.hxw
  • %ALLUSERSPROFILE%\microsoft help\ms.excel.dev.14.1033_1033_mvalidator.hxd
Miscellaneous
Searches for the following windows
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
  • ClassName: 'MS_WebCheckMonitor' WindowName: ''

Curing recommendations

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  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.

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