Trojan.Dropper.Sirefef
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Threat Level: | 80 % (High) |
| Infected Computers: | 23 |
| First Seen: | August 8, 2012 |
| OS(es) Affected: | Windows |
The detection of Trojan.Dropper.Sirefef on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of your computer, and it's essential to understand its nature and how to remove it effectively.
Table of Contents
What Is Trojan.Dropper.Sirefef?
Trojan.Dropper.Sirefef is a type of Trojan horse malware that is capable of downloading and installing additional malicious components on an infected computer. The term "Trojan" refers to the fact that this malware disguises itself as a legitimate program or file, allowing it to bypass security defenses and gain unauthorized access to the system. The "Dropper" part of the name indicates that this malware is designed to drop or install additional malware components, which can lead to further system compromise.
How Trojan.Dropper.Sirefef Operates
Trojan.Dropper.Sirefef typically operates by exploiting vulnerabilities in software or using social engineering tactics to trick users into installing the malware. Once installed, it can connect to remote servers to download and install additional malicious components, such as keyloggers, ransomware, or other types of malware. This malware can also modify system settings, disable security software, and create backdoors for remote access, allowing attackers to control the infected computer.
Symptoms of Infection
Systems infected with Trojan.Dropper.Sirefef may exhibit a range of symptoms, including slow system performance, frequent crashes, and unusual network activity. Users may also notice unfamiliar programs or icons on their desktop, or receive unexpected pop-ups and alerts. In some cases, the malware may also cause issues with internet connectivity, or prevent certain programs from running properly.
- Unexplained changes to system settings or configuration
- Appearance of unfamiliar programs or files
- Increased network activity or unusual traffic
- System crashes or freezes
- Pop-ups, alerts, or other unexpected messages
How to Remove Trojan.Dropper.Sirefef
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
- Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any malicious components.
- Uninstall any suspicious programs or applications that may be related to the malware.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your computer and run another full scan with your anti-malware tool to ensure that all malicious components have been removed.
Conclusion
Removing Trojan.Dropper.Sirefef from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above and using reputable security tools, you can effectively remove this malware and restore your system to a safe and secure state. It's essential to remain vigilant and take proactive measures to prevent future infections, such as keeping your operating system and software up to date, using strong antivirus protection, and avoiding suspicious downloads and email attachments.
Aliases
15 security vendors flagged this file as malicious.
| Antivirus Vendor | Detection |
|---|---|
| McAfee | Generic.dx!bd3x |
| AVG | Agent_r.BDS |
| AhnLab-V3 | Trojan/Win32.ZAccess |
| Antiy-AVL | Virus/Win32.ZAccess.gen |
| AntiVir | TR/Graftor.18557 |
| Comodo | TrojWare.Win32.Rootkit.ZAcces.HL |
| Sophos | Mal/ZeroAcc-A |
| BitDefender | Gen:Variant.Renos.37 |
| ClamAV | Trojan.Tdss-7870 |
| Avast | Win32:Aluroot [Rtk] |
| Symantec | WS.Reputation.1 |
| McAfee | ZeroAccess.dx |
| Panda | Suspicious file |
| AVG | Hider.QIG |
| Fortinet | W32/ZAccess.K!tr |
File System Details
| # | File Name | MD5 |
Detections
Detections: The number of confirmed and suspected cases of a particular threat detected on
infected computers as reported by SpyHunter.
|
|---|---|---|---|
| 1. | csc.sys | 814767af5a34fc59aa4e6251d82d3b83 | 16 |
| 2. | netbt.sys | f4b434c38bff4917fce9e6bd45b703cc | 2 |