PUP.ExpressDownloader.B
The detection of PUP.ExpressDownloader.B on your system indicates the presence of a potentially unwanted program (PUP) that may be compromising your computer's security and performance. This type of software is designed to perform functions that are not necessarily malicious but can still cause significant inconvenience and potential risks to your privacy and data security.
Table of Contents
What Is PUP.ExpressDownloader.B?
PUP.ExpressDownloader.B is categorized as a potentially unwanted program, which means it is not considered malware in the traditional sense (like viruses or Trojans) but can still exhibit behaviors that are unwanted or undesirable. These programs often find their way onto computers through bundled software downloads, where they are included alongside a desired application without the user's full knowledge or consent. Once installed, PUPs can lead to a variety of issues, including the display of unwanted advertisements, changes to browser settings, and the collection of user data without explicit permission.
How PUP.ExpressDownloader.B Operates
PUPs like PUP.ExpressDownloader.B typically operate by integrating themselves into the system and browser settings to achieve their objectives, which can range from displaying advertisements and promoting affiliated products to collecting user data for marketing purposes. They may also download additional software or components from the internet, potentially leading to further system compromises. The primary goal of such programs is often to generate revenue for their creators through pay-per-click advertising, data selling, or by pushing users towards purchasing affiliated software or services.
Symptoms of Infection
Symptoms of a PUP infection can vary but commonly include an increase in unwanted advertisements (pop-ups, banners, etc.) when browsing the internet, unexpected changes to the default browser homepage or search engine, slowdowns in system performance, and the presence of unfamiliar programs or toolbars in your browser or desktop. In some cases, users might notice that their browser settings keep changing back to the unwanted configuration despite their attempts to reset them.
How to Remove PUP.ExpressDownloader.B
- Enter Safe Mode with Networking to prevent the PUP from interfering with the removal process. This mode allows you to use the internet to download removal tools while limiting the functionality of malicious programs.
- Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the software is updated to the latest version to improve detection and removal capabilities.
- Uninstall suspicious programs from your computer. Go through the list of installed applications and remove any that you do not recognize or that were installed around the time the issues began.
- Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings. This step will remove any unwanted extensions, toolbars, and homepage changes caused by the PUP.
- After completing the above steps, reboot your computer and then perform another full scan with your anti-malware tool to ensure that all components of PUP.ExpressDownloader.B have been removed.
Conclusion
Removing PUP.ExpressDownloader.B requires a combination of using the right tools, understanding how PUPs operate, and taking preventative measures to avoid future infections. By following the steps outlined above and maintaining good computing practices, such as regularly updating your software, using strong antivirus programs, and being cautious with downloads and email attachments, you can significantly reduce the risk of PUP infections and keep your computer secure and performing optimally.
Analysis Report
General information
| Family Name: | PUP.ExpressDownloader.B |
|---|---|
| Signature status: | Self Signed |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
44b4d7fa2b2df47273ae3159aa6aa5d2
SHA1:
6f253de3ded4b282d0a110dc1ad65be188e66682
SHA256:
DAC1F2A853D71CF8B4B555A00AEFDC0FCD6D071953D93160D598973EA3F2CDE7
File Size:
4.54 MB, 4542960 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have relocations information
- 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)
Show More
- 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 |
|---|---|
| File Description | The Holy binary |
| File Version | 1, 0, 1202, 1 |
| Internal Name | Holy |
| Legal Copyright | © 2008 - 2016 Holy |
| Original Filename | Holy.exe |
| Product Name | Holy app |
| Product Version | 9.0.2.1 |
Digital Signatures
Digital Signatures
This section lists digital signatures that are attached to samples within this family. When analyzing and verifying digital signatures, it is important to confirm that the signature’s root authority is a well-known and trustworthy entity and that the status of the signature is good. Malware is often signed with non-trustworthy “Self Signed” digital signatures (which can be easily created by a malware author with no verification). Malware may also be signed by legitimate signatures that have an invalid status, and by signatures from questionable root authorities with fake or misleading “Signer” names.| Signer | Root | Status |
|---|---|---|
| Common Files LTD | Common Files LTD | Self Signed |
File Traits
- HighEntropy
- 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: | 8,424 |
|---|---|
| Potentially Malicious Blocks: | 1,908 |
| Whitelisted Blocks: | 6,516 |
| 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.- ExpressDownloader.B
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\appdata\local\temp\z857sgpz0n.tmp\htmlayout.dll | 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 |
|---|---|
| Network Winsock2 |
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