Trojan.BadIIS.A
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: | 2 |
| First Seen: | September 5, 2024 |
| Last Seen: | October 28, 2025 |
| OS(es) Affected: | Windows |
The detection of Trojan.BadIIS.A 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.BadIIS.A?
Trojan.BadIIS.A is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. Trojans are known for their ability to sneak into systems without being detected, often by exploiting vulnerabilities or social engineering tactics. The specific characteristics of Trojan.BadIIS.A are not well-defined without additional context, but it's clear that it poses a risk to your system's security and stability.
How Trojan.BadIIS.A Operates
Like other Trojans, Trojan.BadIIS.A likely operates by creating a backdoor on your system, allowing unauthorized access to your computer. This can lead to a range of malicious activities, including data theft, installation of additional malware, and exploitation of system resources. The exact mechanisms used by Trojan.BadIIS.A are not specified, but it's essential to recognize that Trojans can be highly adaptable and may evolve over time to evade detection.
Symptoms of Infection
The symptoms of a Trojan.BadIIS.A infection can vary, but common signs include unexpected system crashes, slow performance, and unusual network activity. You may also notice that your system is behaving erratically, with unfamiliar programs or windows appearing on your screen. In some cases, you might not notice any symptoms at all, which is why regular system checks and malware scans are crucial for maintaining system security.
How to Remove Trojan.BadIIS.A
- Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for a more straightforward removal process.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all instances of Trojan.BadIIS.A and any associated malware.
- Uninstall any suspicious programs or applications that you don't recognize or that were installed without your consent.
- Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons that may be associated with the Trojan.
- Reboot your system and perform another full scan to ensure that all remnants of the malware have been removed.
Conclusion
Removing Trojan.BadIIS.A from your system requires a combination of technical knowledge and the right tools. By following the steps outlined above and maintaining good system hygiene, you can help protect your computer from future malware infections. Remember to always be cautious when downloading software, opening email attachments, or clicking on links from unfamiliar sources, as these are common vectors for malware distribution. Regular system updates, backups, and malware scans are also essential for maintaining the security and integrity of your system.
Analysis Report
General information
| Family Name: | Trojan.BadIIS.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
b7db573e29c7a6cc078ec7374ea3efba
SHA1:
b547af9aa238aa9ef8339e52875cb2eb8aebf9ef
SHA256:
5172FDE8FE7997DEC540D4932C49E8921714252ABAF0858547D612D13F687F42
File Size:
1.70 MB, 1703424 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have security information
- File has exports table
- File has TLS information
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
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- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Company Name | Microsoft Corporation |
| File Description | Microsoft .NET Runtime Execution Engine |
| File Version | 7.5.706.23547 |
| Internal Name | iismodrqf.dll |
| Legal Copyright | Microsoft Corporation. All rights reserved. |
| Original Filename | iismodrqf.dll |
| Product Name | Internet Information Services |
| Product Version | 7.5.706.23547 |
File Traits
- dll
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 2,543 |
|---|---|
| Potentially Malicious Blocks: | 137 |
| Whitelisted Blocks: | 2,406 |
| Unknown Blocks: | 0 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- BadIIS.A
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Syscall Use |
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| Process Shell Execute |
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| Anti Debug |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\b547af9aa238aa9ef8339e52875cb2eb8aebf9ef_0001703424.,LiQMAxHB
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