Trojan.Stealer.ESA
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: | August 15, 2025 |
| Last Seen: | February 12, 2026 |
| OS(es) Affected: | Windows |
The detection of Trojan.Stealer.ESA on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security of your computer and steal sensitive information. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.
Table of Contents
What Is Trojan.Stealer.ESA?
Trojan.Stealer.ESA is a type of Trojan horse malware that can infect your computer through various means, such as downloading malicious software, opening infected email attachments, or visiting compromised websites. Once installed, it can hide in the background and perform malicious activities without your knowledge or consent. The primary goal of this malware is to steal sensitive information, such as login credentials, credit card numbers, and personal data, which can be used for identity theft, financial fraud, or other malicious purposes.
How Trojan.Stealer.ESA Operates
Trojan.Stealer.ESA operates by exploiting vulnerabilities in your system or using social engineering tactics to trick you into installing it. Once installed, it can communicate with its command and control servers to receive instructions and transmit stolen data. This malware can also install additional malicious components, such as keyloggers, screen scrapers, or ransomware, to further compromise your system. It may also attempt to disable your security software or firewall to avoid detection and removal.
Symptoms of Infection
The symptoms of a Trojan.Stealer.ESA infection can be subtle, but they may include unusual system behavior, such as slow performance, unexpected crashes, or unfamiliar programs running in the background. You may also notice suspicious network activity, such as unusual outgoing connections or data transfers. Additionally, you may receive alerts from your security software or notice that your personal data is being stolen or misused.
How to Remove Trojan.Stealer.ESA
- Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow you to download and install removal tools.
- Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system to detect and remove all instances of the malware.
- Uninstall any suspicious programs or applications that may be related to the malware.
- Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings to remove any malicious extensions or add-ons.
- Reboot your computer and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.
Conclusion
Removing Trojan.Stealer.ESA from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above, you can effectively remove this threat and prevent future infections. It is essential to remain vigilant and take proactive measures to protect your system, such as keeping your operating system and software up to date, using strong antivirus software, and avoiding suspicious downloads or email attachments. By taking these precautions, you can help ensure the security and integrity of your personal data and prevent the spread of malware.
Analysis Report
General information
| Family Name: | Trojan.Stealer.ESA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
772f3680a96c2c1b4fac030f96b21bae
SHA1:
0882f11ef35fca39a205fcd8cd83efbbc00c6d43
SHA256:
FFBC6B4D798A9755203D14EFB72BC64C34C92CD759083561B6F6E8064BB1EFF0
File Size:
999.02 KB, 999016 bytes
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MD5:
029b2a0fabe089742945563e399f6ed8
SHA1:
e623c82ef0c4cee54dd492ac7da1bf4230f9614e
SHA256:
166AD01E47F9264E5AECE8EC0433CD5459AE5546451FC5592CE9CCA0673CE73F
File Size:
1.40 MB, 1401856 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have resources
- File doesn't have security information
- 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 |
|---|---|
| Build I D | NBVxTuDH-858174 |
| Company Name | Microsoft Corporation |
| File Description | UwuGfL |
| File Version | 10.0.19041.1 |
| Internal Name | iJV |
| Legal Copyright | Microsoft Corporation. All rights reserved. |
| Legal Trademarks | iJV is a Trademark of Microsoft Corporation. |
| Original Filename | ucqonq.exe |
| Product Name | THXf |
| Product Version | 10.0.19041.1 |
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 |
|---|---|---|
| Microsoft Windows | Microsoft Windows Production PCA 2011 | Hash Mismatch |
File Traits
- 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: | 3,704 |
|---|---|
| Potentially Malicious Blocks: | 63 |
| Whitelisted Blocks: | 3,232 |
| Unknown Blocks: | 409 |
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.- Stealer.ESA
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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| Process Manipulation Evasion |
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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\dllhost.exe (NULL)
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