Trojan.Flystud.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: | 10,623 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 641 |
| First Seen: | September 23, 2021 |
| Last Seen: | February 21, 2026 |
| OS(es) Affected: | Windows |
Table of Contents
Analysis Report
General information
| Family Name: | Trojan.Flystud.A |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
272cca10d3c2818ab06787b5dfb6903e
SHA1:
2d111c1a671daa30003c53a66ca17023af36060e
SHA256:
4F39A2E43695956F22BC01FC97DBF91BC1883939C72C87AEF9D0EA0E883F11F1
File Size:
1.06 MB, 1057525 bytes
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MD5:
6600cc1f484c5bffef8d4eb16e30cce1
SHA1:
e1a44c3150504390f003fe308e53a1adb877e9be
SHA256:
9A79771829846E6688E884FDBEFA16A99EBF031D5892E4EC1599DDB9405C8DA6
File Size:
1.18 MB, 1178624 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have relocations information
- File doesn't have security 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
Show More
- 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 | 4.9.0.0 |
| Comments | 用于检测邮箱是否真实有效 |
| Company Name | daya123.com |
| File Description | 批量-邮箱-有效性-验证-专家 |
| File Version |
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| Internal Name |
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| Legal Copyright | Copyright © maYax.cn 2019 |
| Legal Trademarks | 大牙软件 |
| Original Filename |
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| Product Name |
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| Product Version |
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File Traits
- 2+ executable sections
- HighEntropy
- ntdll
- WriteProcessMemory
- 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: | 658 |
|---|---|
| Potentially Malicious Blocks: | 155 |
| Whitelisted Blocks: | 189 |
| Unknown Blocks: | 314 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
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 |
|---|---|
| Other Suspicious |
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