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Trojan.DownLoader45.45557
Added to the Dr.Web virus database:
2023-02-24
Virus description added:
2023-02-25
Technical Information
Modifies file system
Creates the following files
%TEMP%\is-8mt90.tmp\is-bkcfe.tmp
%ProgramFiles(x86)%\excel repair toolbox\unins000.dat
%WINDIR%\syswow64\is-5194s.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-lhsi9.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-ek7mq.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-anmiv.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-jdb4f.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-6d4bj.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-0d863.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-a0vdr.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-896v7.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-qagdi.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-ndh0m.tmp
%ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolboxlauncher.exe
%ProgramFiles(x86)%\excel repair toolbox\is-thhqu.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-ec3cd.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-82dtr.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-4u1oj.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-iekfc.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-j0n0c.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-ihf8r.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-3on8v.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-2elb8.tmp
%TEMP%\is-r9u5o.tmp\_isetup\_iscrypt.dll
%TEMP%\is-r9u5o.tmp\_isetup\_shfoldr.dll
%TEMP%\is-r9u5o.tmp\_isetup\_setup64.tmp
%TEMP%\is-r9u5o.tmp\_isetup\_regdll.tmp
%ProgramFiles(x86)%\excel repair toolbox\is-frhqe.tmp
%TEMP%\ska.cab
Moves the following files
from %ProgramFiles(x86)%\excel repair toolbox\is-2elb8.tmp to %ProgramFiles(x86)%\excel repair toolbox\unins000.exe
from %ProgramFiles(x86)%\excel repair toolbox\is-ek7mq.tmp to %ProgramFiles(x86)%\excel repair toolbox\turbosearch.exe
from %ProgramFiles(x86)%\excel repair toolbox\is-anmiv.tmp to %ProgramFiles(x86)%\excel repair toolbox\settings.bin
from %ProgramFiles(x86)%\excel repair toolbox\is-jdb4f.tmp to %ProgramFiles(x86)%\excel repair toolbox\ssleay32.dll
from %ProgramFiles(x86)%\excel repair toolbox\is-6d4bj.tmp to %ProgramFiles(x86)%\excel repair toolbox\libeay32.dll
from %ProgramFiles(x86)%\excel repair toolbox\is-0d863.tmp to %ProgramFiles(x86)%\excel repair toolbox\excel repair toolbox license.txt
from %ProgramFiles(x86)%\excel repair toolbox\is-a0vdr.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.trk
from %ProgramFiles(x86)%\excel repair toolbox\is-896v7.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.rus
from %ProgramFiles(x86)%\excel repair toolbox\is-qagdi.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.ptb
from %ProgramFiles(x86)%\excel repair toolbox\is-lhsi9.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolboxlauncher.exe
from %ProgramFiles(x86)%\excel repair toolbox\is-ndh0m.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.plk
from %ProgramFiles(x86)%\excel repair toolbox\is-frhqe.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.kor
from %ProgramFiles(x86)%\excel repair toolbox\is-ec3cd.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.jpn
from %ProgramFiles(x86)%\excel repair toolbox\is-82dtr.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.ita
from %ProgramFiles(x86)%\excel repair toolbox\is-4u1oj.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.fra
from %ProgramFiles(x86)%\excel repair toolbox\is-iekfc.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.esn
from %ProgramFiles(x86)%\excel repair toolbox\is-j0n0c.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.deu
from %ProgramFiles(x86)%\excel repair toolbox\is-ihf8r.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.chs
from %ProgramFiles(x86)%\excel repair toolbox\is-3on8v.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.ara
from %ProgramFiles(x86)%\excel repair toolbox\is-thhqu.tmp to %ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolbox.nld
from %WINDIR%\syswow64\is-5194s.tmp to %WINDIR%\syswow64\sqlite3.dll
Network activity
TCP
HTTP GET requests
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?eb##############
UDP
Miscellaneous
Searches for the following windows
ClassName: 'ExcelRepairToolboxClassERTB1' WindowName: ''
Creates and executes the following
'%TEMP%\is-8mt90.tmp\is-bkcfe.tmp' /SL4 $D0018 "<Full path to file>" 5942352 95232
'%ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolboxlauncher.exe'
'%ProgramFiles(x86)%\excel repair toolbox\excelrepairtoolboxlauncher.exe' 95e04755a063d7f457c278d0007296cd
Executes the following
'%WINDIR%\syswow64\schtasks.exe' /Query
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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