How to Remove “signtool.exe”

What is signtool.exe?


signtool.exe is a legitimate process file of Authenticode (R) – a signing and verifying tool. It is a part of Windows Operating System developed by Microsoft Corporation.  It is located in C:\Windows\System32 by default. Malware programmers create files with malicious content and name them after signtool.exe with an aim to spread virus on the internet.
 
Affected Platform: Windows OS
 

How to check if your computer is infected with signtool.exe malware?


Keep an eye for the following symptoms to see if your PC is infected with signtool.exe malware:
  • Internet connection fluctuates
  • signtool.exe takes too much CPU space
  • PC slows down significantly
  • Browser automatically redirects to some irrelevant websites
  • Unsolicited ads and popups starts appearing
  • Screen freezes constantly
If your PC is infected with signtool.exe malware, it will invite other malwares to cause more damage to your computer. Take the following steps to diagnose your PC for possible signtool.exe malware attack:
 
Step 1: Simultaneously press CTRL+ALT+DEL keys to open Task Manager.
 
Step 2: If you notice the file located outside C:\Windows\System32, then you should run an antivirus scan to get rid of the malware.
 
How to remove the signtool.exe file from system using Comodo Antivirus?
 
Step 1: Download the award-winning Free Internet Security.
 
Step 2: Installation configuration frames will be displayed. Select the configuration you would like to apply.
 
Step 3: Select Customize Configuration option and arrange installers, configuration, and file location.
 
Step 4: Restart your PC.
 
Step 5: It will take some time for the Comodo Internet Security to update the antivirus.
 
Step 6: Proceed with a quick scan that automatically begins after the update.
 
Step 7: If threats are found during the scanning, you will be prompted with an alert screen.
 
Step 8: Comodo Antivirus will remove the signtool.exe virus from your computer including all other malwares!
2

Malware Entries

First Seen: 27 February 2018 at 6:54 pm
No. Company File Type SHA1 MD5 Malware
Name
Digitally
Signed
File
Version
Product
Version
Submitted
From
Malware Behavior
1 Microsoft Corporation Executable 0a7a3d5c56533d0c
fcd77190997d19b4
4738172f
1bcddce2880b9399
8b0b6ba2fc7c245a
Virus.Win32.
Ramnit.K
No 3.00
(srv03_sp1
_rtm.05032
4-1447)
5.2.3790.1
830
Philippines N/A
2 Microsoft Corporation Executable b7bb6b5deee5bcad
23587c347cb4a9db
bcd6abbd
ce9f8844e1c8cb46
656d5772a55de4f6
EmailWorm.Wi
n32.Runonce.
~v001
No 3.00
(srv03_sp1
_rtm.05032
4-1447)
5.2.3790.1
830
Romania N/A
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12

Safe Entries

First Seen: 12 January 2009 at 10:09 am
No. Company File Type SHA1 MD5 Digitally
Signed
File
Version
Product
Version
Submitted
From
1 Microsoft Corporation Executable f0db0a8b8021573a
8daee6516ca2ec14
4bba535e
8c475f21729e15e6
bd75ff53bbb4a5d2
Yes 4.00
(rs1_relea
se_sec.170
105-1850)
10.0.14393
.795
United States
2 Microsoft Corporation Executable 96e8c80db8035c6b
adea2be97796b00c
736afd15
f944d3c2c989da14
d87517d1ff647dd3
Yes 4.00
(win7_rtm.
090713-125
5)
6.1.7600.1
6385
United States
3 Microsoft Corporation Executable 3d2cb008f62db902
b994334d44b749ab
e3df6882
91841c67c9b67fd3
64413872dd076a2a
No 4.00
(longhorn_
rtm.080108
-2300)
6.0.6001.1
7131
United States
4 Microsoft Corporation Executable 8613a9c1c1cfc707
9f0acf5d04d088bc
f7b6f38a
eb203456bf55ebc7
882bb9e791b08cc1
Yes 4.00
(winblue_r
tm.130821-
1623)
6.3.9600.1
6384
United States
Display 4 items per page
  • 4 items per page
  • 8 items per page
  • 16 items per page
  • 32 items per page
 
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