Adware.MSIL.BrowserAssistant.D
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: | 2,888 |
| Threat Level: | 20 % (Normal) |
| Infected Computers: | 189 |
| First Seen: | December 31, 2025 |
| Last Seen: | April 27, 2026 |
| OS(es) Affected: | Windows |
Table of Contents
Analysis Report
General information
| Family Name: | Adware.MSIL.BrowserAssistant.D |
|---|---|
| Signature status: | Root Not Trusted |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
ea89a051262d83553c5a6cc49dd2414b
SHA1:
f2441855d2cc97978971f0af7932b5572960ebdc
SHA256:
011ACDD53F6198883460AC18FF748A73EC9463D00D85B684EE33011D63591EE1
File Size:
481.35 KB, 481352 bytes
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MD5:
f7203ddd9e51799347cdb0cc0674e479
SHA1:
1ba1117fbfb84a111e318cadb914a7df07cc8ff8
SHA256:
F6D84EA74F90BCEB80915F314048C778EBCB9524FF9C64CE0D825FF61E0CDE88
File Size:
481.35 KB, 481352 bytes
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MD5:
04ee38aa7fd3712c6e281b59619bc7cc
SHA1:
74cac80cbe9cf584cfdba7cbbdd69e43b96fd597
SHA256:
8F0DF01B63699603133BE0DD37C79839BBFC7B43D01070DA4EA3F442A5A2E94E
File Size:
449.61 KB, 449608 bytes
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MD5:
0077f23e425dfc73f600a44d5a9de4e8
SHA1:
eb1f14cce1f86aae720747ee5f05789cccaafa4a
SHA256:
CFF720F4CB770352C4BACDD3E9378FE2B446248BBC6C5C314DF145CC23AE6D30
File Size:
478.79 KB, 478792 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File is .NET application
- File is 32-bit executable
- File is either console or GUI application
- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- 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 |
|---|---|
| Assembly Version |
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| Comments | OneStartBrowser |
| Company Name | OneStart.ai |
| File Description | OneStartBrowser |
| File Version |
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| Internal Name | OneStart.exe |
| Legal Copyright | Copyright © OneStart.ai 2025 |
| Original Filename | OneStart.exe |
| Product Name | OneStartBrowser |
| Product Version |
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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 |
|---|---|---|
| Onestart Technologies LLC | SSL.com EV Root Certification Authority RSA R2 | Root Not Trusted |
File Traits
- .NET
- 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: | 140 |
|---|---|
| Potentially Malicious Blocks: | 79 |
| Whitelisted Blocks: | 60 |
| Unknown Blocks: | 1 |
Visual Map
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0 - Probable Safe Block
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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.- MSIL.BrowserAssistant.D
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 |
|---|---|
| User Data Access |
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| Encryption Used |
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| Anti Debug |
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