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!
11

Malware Entries

Safe Entries
First Seen: 04 January 2012 at 6:59 pm
No. Company File Type SHA1 MD5 Malware
Name
Digitally
Signed
File
Version
Product
Version
Submitted
From
Malware Behavior
1 Microsoft Corporation Executable 497b04aa36d526a9
8b69afec223b5545
7e8a5617
2a22a0cc39ce33e9
f8f231f8ceca25d0
Unclassified
Malware
No 4.00
(srv03_sp1
_qfe.05111
0-1543)
5.2.3790.2
568
Internal Submission N/A
2 Microsoft Corporation Executable 39df123ffb157b38
a3bd1cb0f8faa28f
070e3f33
2523adcf741a54c2
58af4efa09368ba6
Virus.Win32.
Parite.gen
No 3.00
(srv03_sp1
_rtm.05032
4-1447)
5.2.3790.1
830
China N/A
3 Microsoft Corporation Executable a1f25299c846ecb5
a19f9545e84b8f56
5c3bd112
7bb6ba9c8389dc63
5e1e5316ab441aed
Virus.Win32.
Ramnit.K
No 3.00
(srv03_sp1
_rtm.05032
4-1447)
5.2.3790.1
830
105.112.23.188/32 N/A
4 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
Display 4 items per page
  • 4 items per page
  • 8 items per page
  • 16 items per page
  • 32 items per page
67

Safe Entries

Safe Entries
First Seen: 03 October 2008 at 4:40 pm
No. Company File Type SHA1 MD5 Digitally
Signed
File
Version
Product
Version
Submitted
From
1 Microsoft Corporation Executable c8fd0ac922790ec8
ed546e9b1fa7690b
192e8ca9
d889424210067ada
ecd1ea901f480dcc
Yes 4.00
(win7_rtm.
090713-125
5)
6.1.7600.1
6385
Internal Submission
2 Microsoft Corporation Executable bc6e4e68fa3e14e5
6166e0c9e9fdb4bc
70b42be7
c81429b2ad43ad41
e5798adb5e2b4549
Yes 3.00
(srv03_sp1
_rtm.05032
4-1447)
5.2.3790.1
830
Internal Submission
3 Microsoft Corporation Executable 96e8c80db8035c6b
adea2be97796b00c
736afd15
f944d3c2c989da14
d87517d1ff647dd3
Yes 4.00
(win7_rtm.
090713-125
5)
6.1.7600.1
6385
United States
4 Microsoft Corporation Executable d77aefebb3fdf5a0
703d546f5db6f4cc
94818be0
0cbec1f53273baea
4ad01a1be4afdb42
Yes 4.00
(WinBuild.
160101.080
0)
10.0.22621
.755
United States
Display 4 items per page
  • 4 items per page
  • 8 items per page
  • 16 items per page
  • 32 items per page
 
Exclusive Offer
Get Free Endpoint Protection
World's
Only Complete
Antivirus

Award-Winning Security to Protect Your Clients from Cyber Attacks

One Comodo

Comodo Internet Security Pro

Antivirus Protection protection from hackers! Get the ultimate Antivirus solution to keep your PC clean and to remove viruses from a slow or infected PC. Improve the PC performance at home or use it on-the-go!

Get Comodo Internet Security Comodo Internet Security