ISTBar

By CagedTech in Browser Hijackers
Published:
Last updated:

Threat Scorecard

Popularity Rank: 17,095
Threat Level: 50 % (Medium)
Infected Computers: 485
First Seen: July 24, 2009
Last Seen: September 10, 2026
OS(es) Affected: Windows

The detection of ISTBar on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the issue and guide you through the removal process.

What Is ISTBar?

ISTBar is a type of malicious software that has been identified as a threat to your system's security. While specific details about this particular threat are limited, it is essential to recognize that malware like ISTBar can compromise your system's integrity, steal sensitive information, and disrupt your online activities.

How ISTBar Operates

Malware, including threats like ISTBar, typically operates by exploiting vulnerabilities in software or manipulating user behavior to gain unauthorized access to a system. Once inside, it can install additional malicious components, modify system settings, and engage in various malicious activities such as data theft, keystroke logging, or displaying unwanted advertisements.

The exact mechanisms used by ISTBar are not specified, but it's crucial to understand that the primary goal of such malware is to remain undetected while maximizing the damage or profit for the attackers. This can include selling stolen data, using compromised systems for spam or malware distribution, or demanding ransom in exchange for restoring access to encrypted data.

Symptoms of Infection

Systems infected with ISTBar or similar malware may exhibit a range of symptoms, including but not limited to, slow system performance, frequent crashes, unwanted pop-ups or advertisements, and suspicious network activity. Users might also notice that their browser homepage or search engine has been changed without their consent, or that they are being redirected to unfamiliar websites.

  • Unexplained changes in browser settings or the appearance of unfamiliar toolbars.
  • Increased spam or phishing attempts originating from the compromised system.
  • Difficulty in installing or running security software.

Recognizing these symptoms early can help in mitigating the damage caused by ISTBar and similar threats.

How to Remove ISTBar

  1. Boot your system into Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all components of ISTBar.
  3. Uninstall any recently installed or suspicious programs that could be related to the malware.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by ISTBar.
  5. Reboot your system and run another full scan with your anti-malware tool to ensure that all threats have been removed.

It's essential to follow these steps carefully and consider seeking professional help if you're unsure about any part of the process.

Conclusion

The removal of ISTBar and the protection of your system require a proactive and informed approach. By understanding how malware operates and taking prompt action upon detection, you can significantly reduce the risk of further compromise. Regularly updating your software, using strong antivirus tools, and practicing safe browsing habits are key to maintaining system security and preventing future infections.

Stay vigilant and ensure your system and personal data are protected by adopting a comprehensive security strategy that includes ongoing monitoring, timely updates, and a reliable backup system.

Aliases

15 security vendors flagged this file as malicious.

Antivirus Vendor Detection
Panda Generic Trojan
AVG VB.AIQI
AntiVir TR/Agent.676832
Avast Win32:Malware-gen
K7AntiVirus Trojan
McAfee Generic.dx!zao
Kaspersky Trojan-Downloader.Win32.IstBar.gox
eTrust-Vet Win32/IstBar.EB
Sunbelt Virtumonde
Sophos Istbar
Ikarus Trojan-Downloader.Win32.IstBar
eSafe Suspicious File
Comodo TrojWare.Win32.TrojanDownloader.IstBar.~L
ClamAV Trojan.Istbar-187
Authentium W32/FakeAlert.CC.gen!Eldorado

File System Details

ISTBar may create the following file(s):
# File Name MD5 Detections
1. FixAuto.exe 7198869224725a95e7d6a43eaf252f51 18
2. eain09g7.exe 07ee4d73ff5f9005fbe4fa0f1d386c97 0
3. ktwkqt.exe b1dc360e345fd8039e3a4ff00e95a65e 0
4. istbar_mainstream[1].dll 66b5b33c5445dd14aea8d33efaa703cd 0
5. iinstall.exe, istdownload[1].exe 54b163ec8495a104a0fe1df16d4698f5 0
6. istdialog.new[1].dll f2f074d4cc8b848fd84a5e434d038d8c 0
7. 37482CA.dll 042265b18033ead00247303305bddfad 0

Registry Details

ISTBar may create the following registry entry or registry entries:
CLSID
{5F1ABCDB-A875-46c1-8345-B72A4567E486}
File name without path
Power Scan.lnk