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アンチウイルスに関する誤解と噂

アンチウイルスに関する誤解

ニュース

Trojan.DownLoader25.19624

Added to the Dr.Web virus database: 2017-08-10

Virus description added: 2017-08-09

Technical Information

Malicious functions:

Creates and executes the following:

'%TEMP%\1.tmp\telnet.exe' 193.63.251.221 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.216 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.214 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.215 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.222 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.150 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.147 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.223 1494
'%TEMP%\1.tmp\telnet.exe' 193.63.251.221 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.216 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.215 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.214 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.147 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.150 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.222 80
'%TEMP%\1.tmp\telnet.exe' 193.63.251.223 80

Executes the following:

'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.221 1494
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.222 1494
'<SYSTEM32>\cmd.exe' /k telnet 193.63.251.215 1494
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.216 1494
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.223 1494
'<SYSTEM32>\notepad.exe' "Testing connections to Remote Desktop Servers"
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\selfdel0.bat" "
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.147 1494
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.150 1494
'<SYSTEM32>\cmd.exe' /k telnet 193.63.251.214 1494
'<SYSTEM32>\cmd.exe' /k telnet 193.63.251.215 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.216 80
'<SYSTEM32>\cmd.exe' /c ""%TEMP%\1.tmp\batchfile.bat" "
'<SYSTEM32>\cmd.exe' /k telnet 193.63.251.214 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.221 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.147 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.150 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.222 80
'<SYSTEM32>\cmd.exe' /K telnet 193.63.251.223 80

Modifies file system:

Creates the following files:

%TEMP%\1.tmp\telnet.exe
%TEMP%\1.tmp\Testing connections to Remote Desktop Servers
%TEMP%\1.tmp\batchfile.bat

Deletes the following files:

%TEMP%\1.tmp\telnet.exe
%TEMP%\1.tmp\Testing connections to Remote Desktop Servers
%TEMP%\1.tmp\batchfile.bat

Deletes itself.

Network activity:

Connects to:

'19#.#3.251.221':1494
'19#.#3.251.216':1494
'19#.#3.251.214':1494
'19#.#3.251.215':1494
'19#.#3.251.222':1494
'19#.#3.251.150':1494
'19#.#3.251.147':1494
'19#.#3.251.223':1494
'19#.#3.251.221':80
'19#.#3.251.222':80
'19#.#3.251.215':80
'19#.#3.251.214':80
'19#.#3.251.147':80
'19#.#3.251.150':80
'19#.#3.251.216':80
'19#.#3.251.223':80

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''

Curing recommendations

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.

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Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

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Download by serial number

Download on App Store

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

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.

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