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!
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 | 8c5281594c67c631 769f9fd392ff567b 584c383f |
5602dfc37d774552 6d6bc29bb5156348 |
Virus.Win32. Ramnit.K |
No | 3.00 (srv03_sp1 _rtm.05032 4-1447) |
5.2.3790.1 830 |
 Turkey |
N/A |
| 3 | 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 |
| 4 | 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 |
Philippines
Egypt
Ukraine
Taiwan
RomaniaFirst 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 | 96e8c80db8035c6b adea2be97796b00c 736afd15 |
f944d3c2c989da14 d87517d1ff647dd3 |
Yes | 4.00 (win7_rtm. 090713-125 5) |
6.1.7600.1 6385 |
10.224.1.59/32 |
Russian Federation
