Trojan.Keylogger.BH
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: | 1 |
| First Seen: | January 9, 2024 |
| Last Seen: | October 13, 2026 |
| OS(es) Affected: | Windows |
Trojan.Keylogger.BH is a dangerous Trojan horse infection that targets computers running the Windows operating system. Rated at a high danger level, this threat is designed to covertly install itself on a victim's machine and then quietly monitor activity, steal information, and open the door for hackers to take further control of the compromised system. Like most Trojans, it is built to operate without drawing attention to itself, making it especially risky for users who may not realize their computer has been compromised.
Table of Contents
What Trojan.Keylogger.BH Does
Once active, Trojan.Keylogger.BH runs silently in the background of an infected Windows machine, carrying out malicious tasks without the user's knowledge or consent. As its name suggests, this Trojan is associated with keylogging behavior, meaning it can be used to monitor and record what a user types, potentially capturing sensitive information such as login credentials, financial details, and personal messages. Beyond keylogging functionality, Trojans in this family are known to give attackers a backdoor into the system, which may allow them to gain significant control over the infected computer. This can include covertly deleting files, installing additional malicious software, and altering system behavior, all while trying to remain hidden from the user. The malware has also been observed attempting to detect if it is being analyzed in a debugging environment, a common technique Trojans use to evade detection by security researchers and automated analysis tools.
How It Usually Gets Onto Computers
Trojan.Keylogger.BH typically spreads using the classic distribution tactics common to this entire category of malware. It often exploits system vulnerabilities and security flaws to install itself without permission. Infections frequently originate from software downloaded from malicious or compromised websites, as well as from email attachments sent by untrusted or unknown senders. These attachments can be disguised using a variety of file extensions, including .exe, .pif, .avi, and even seemingly harmless .jpg files, tricking users into opening them.
Risks for the User
The presence of a keylogging Trojan on a system poses serious risks. Because it can record keystrokes and monitor user activity, it may lead to the theft of passwords, banking information, and other sensitive data. Combined with its ability to grant attackers broader control over the infected machine, users risk having files deleted, additional malware installed, and their system settings changed without their awareness. This can result in financial loss, identity theft, and a generally compromised and unstable computing environment.
Signs of Infection
Trojans like this one are built to be stealthy, so obvious warning signs are not always present. However, users may notice unusual system slowdowns, unexpected changes to settings, unfamiliar programs appearing on the system, or strange network activity. Since the malware operates quietly, many infections go unnoticed for extended periods, which is part of what makes this category of threat particularly dangerous.
How to Stay Protected
To reduce the risk of infection, users should avoid downloading software from untrusted or unofficial websites and should never open email attachments from unknown or suspicious senders, regardless of the file extension. Keeping the Windows operating system and all installed software updated and patched helps close off vulnerabilities that Trojans like this one are known to exploit. Running reputable, up-to-date security software, practicing caution with downloads and links, and maintaining regular backups of important data are also strongly recommended habits for staying protected against keylogging Trojans and similar threats.
Analysis Report
General information
| Family Name: | Trojan.Keylogger.BH |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
974e46212140ec88a1dd4168a16eaae9
SHA1:
2792af0ab2c302d8db22810a111db5e567630322
SHA256:
08BECFB4FD01BCDD4C4187A24744A66A55A4C8E809F828D424C8EA1863DDCA66
File Size:
536.27 KB, 536274 bytes
|
Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have exports table
- File doesn't have relocations information
- File doesn't have security 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
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.
File Traits
- big overlay
- No Version Info
- 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: | 2,064 |
|---|---|
| Potentially Malicious Blocks: | 633 |
| Whitelisted Blocks: | 1,431 |
| 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.- Keylogger.BH
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\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.1.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
| c:\users\user\appdata\local\microsoft\windows\usrclass.dat{dba6b5ef-640a-11ed-9bcb-f677369d361c}.txr.2.regtrans-ms | Generic Read,Write Data,Write Attributes,Write extended,Append data |
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 |
|---|---|
| Anti Debug |
|
| User Data Access |
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