Adware.Koala.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.
| Popularity Rank: | 19,851 |
| Threat Level: | 20 % (Normal) |
| Infected Computers: | 11 |
| First Seen: | March 10, 2025 |
| Last Seen: | June 12, 2026 |
| OS(es) Affected: | Windows |
The detection of Adware.Koala.A on your system indicates the presence of unwanted software that may be compromising your online experience and potentially exposing you to more severe security threats. Adware, short for advertising-supported software, is designed to display unwanted advertisements, collect user data, or redirect searches to affiliate pages. Understanding what Adware.Koala.A is, how it operates, its symptoms, and how to remove it is crucial for regaining control of your computer and protecting your personal information.
Table of Contents
What Is Adware.Koala.A?
Adware.Koala.A refers to a specific type of adware program detected on your system. Adware itself is a form of malware that is intended to force ads onto a user's device, often in ways that are intrusive and disruptive. These ads can appear as pop-ups, banners, or even as sponsored content within the programs you use or the websites you visit. The primary goal of adware is to generate revenue for its creators by displaying advertisements, usually without the user's consent or knowledge.
How Adware.Koala.A Operates
Adware.Koala.A, like other adware programs, operates by infiltrating a user's system, often through bundled software downloads, infected email attachments, or exploited vulnerabilities in software. Once installed, it can modify browser settings, add toolbars, and change the default homepage or search engine to redirect users to specific websites. This redirection can lead to further malware infections or the collection of user data for targeted advertising. Adware can also consume system resources, slowing down the computer and affecting its overall performance.
Symptoms of Infection
Symptoms of an adware infection can vary but commonly include an increase in unwanted advertisements, new toolbars in your browser that you didn't install, and changes to your browser's homepage or search engine. You might also notice that your browser redirects to unwanted web pages or that your computer is running slower than usual. Sometimes, adware can also lead to more severe issues, such as data breaches or the installation of additional malware.
How to Remove Adware.Koala.A
- Enter Safe Mode with Networking to prevent the adware from loading and to give you a clean environment to work in.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of adware.
- Uninstall suspicious programs that you don't recognize or that were installed around the time the adware was detected.
- Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any changes made by the adware.
- Reboot your computer and then perform another scan to ensure that all components of the adware have been removed.
Conclusion
Removing Adware.Koala.A requires a combination of using the right tools, understanding how adware operates, and taking proactive steps to secure your system. By following the steps outlined above and maintaining good computing habits, such as regularly updating your software, using strong antivirus programs, and being cautious with downloads and email attachments, you can protect your computer from adware and other types of malware. Remember, vigilance and proactive security measures are key to a safe and secure online experience.
Analysis Report
General information
| Family Name: | Adware.Koala.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
c54c8964e17bd72ceaa9d8c5859faee3
SHA1:
d63062649d54a9030d6026f6b7ab819424c60053
SHA256:
B9B61E856B38934A1068CA4508CB681E767F5E4AE1B9A902180A53053D684064
File Size:
8.13 MB, 8131072 bytes
|
|
MD5:
ac25651451fcc10a00e882da654b9e58
SHA1:
e65887525cb6a9a62b35502781eff866633a6548
SHA256:
D2E1A2727F7E07635BDA170C47881968A2CB3EFBBB2256ECE8F36057B5E10A51
File Size:
3.64 MB, 3637248 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have security information
- File has exports table
- File has TLS information
- File is 64-bit executable
- File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
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- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
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 | https://juij.fun & 公众号/bilibili：非线性列车 [编译优化] |
| File Description | 解锁 Steam DLC |
| File Version | 2.0.7 |
| Internal Name | SmokeAPI |
| Legal Copyright | https://juij.fun & 公众号/bilibili：非线性列车 [编译优化] |
| Original Filename | SmokeAPI.dll |
| Product Name | SmokeAPI |
| Product Version | 2.0.7 |
File Traits
- dll
- fptable
- HighEntropy
- No Version Info
- ntdll
- WriteProcessMemory
- x64
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: | 12,109 |
|---|---|
| Potentially Malicious Blocks: | 1,211 |
| Whitelisted Blocks: | 10,632 |
| Unknown Blocks: | 266 |
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.- Koala.A
Files Modified
Files Modified
This section lists files that were created, modified, moved and/or deleted by samples in this family. File system activity can provide valuable insight into how malware functions on the operating system.| File | Attributes |
|---|---|
| c:\users\user\downloads\juij_6\_÷ÿl}_m#ð.txt | Generic Write,Read Attributes |
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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