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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

BackDoor.Caphaw.128

Added to the Dr.Web virus database: 2015-10-03

Virus description added: 2015-10-03

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'E1GIs/h2hnop1EPoCVbfFhU=' = '"%APPDATA%\Identities\nslookup.exe"'

Malicious functions:

Injects code into

the following system processes:

<SYSTEM32>\cmd.exe
<SYSTEM32>\cscript.exe
%WINDIR%\Explorer.EXE
<SYSTEM32>\ctfmon.exe

a large number of user processes.

Terminates or attempts to terminate

the following user processes:

safari.exe
opera.exe
chrome.exe

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '2500' = '00000003'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1609' = '00000003'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1406' = '00000003'

Modifies file system :

Creates the following files:

%APPDATA%\Identities\nslookup.exe

Deletes itself.

Network activity:

Connects to:

'5c######2um0n594w.umc.su':443
'uu####i1fbd3.umc.su':443
'e3####.www5.jeo.cc':443
'aw####w0z.jeo.cc':443
'dk###me5.jeo.cc':443
'bp####7mk3he.jeo.cc':443
'5p####7hi.umc.su':443
'cw###lc.gmz.cc':443
'1g#####rtdldl6.umc.su':443
'0q######est448n.www5.umc.su':443

UDP:

DNS ASK qs#####0nbibu.umc.su
DNS ASK n1#####clh.www5.umc.su
DNS ASK w9####mjd4.umc.su
DNS ASK vp#####ct5y2b.gmz.cc
DNS ASK hs#####86yujd0t.gmz.cc
DNS ASK g8###m6h.umc.su
DNS ASK nk#####grhhuq4ov.jeo.cc
DNS ASK k4###5.gmz.cc
DNS ASK we####qr2zn.gmz.cc
DNS ASK ze#######fkrfrqy.www5.gmz.cc
DNS ASK xx######k8kkpzzhk.jeo.cc
DNS ASK q6####.www5.jeo.cc
DNS ASK 4y####x3aic.jeo.cc
DNS ASK 0q######est448n.www5.umc.su
DNS ASK 1g#####rtdldl6.umc.su
DNS ASK uu####i1fbd3.umc.su
DNS ASK 5p####7hi.umc.su
DNS ASK bp####7mk3he.jeo.cc
DNS ASK cw###lc.gmz.cc
DNS ASK 5c######2um0n594w.umc.su
DNS ASK t0#####emrt95u.jeo.cc
DNS ASK cd#####tq.www5.gmz.cc
DNS ASK wm#####5fk7v4n2x.gmz.cc
DNS ASK e3####.www5.jeo.cc
DNS ASK dk###me5.jeo.cc
DNS ASK aw####w0z.jeo.cc

Miscellaneous:

Searches for the following windows:

ClassName: 'Indicator' 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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