Trojan.Filecoder.JPA
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: | 25,508 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 2 |
| First Seen: | November 27, 2025 |
| Last Seen: | September 27, 2026 |
| OS(es) Affected: | Windows |
Trojan.Filecoder.JPA is a detection name used to identify a type of malicious program known as a file-encrypting Trojan, more commonly referred to as ransomware. Threats in this category are designed to restrict victims from accessing their own data by scrambling files with encryption, then demanding payment in exchange for the promise of restoring access. As with most threats in the Trojans category, Trojan.Filecoder.JPA operates quietly in the background, often without obvious warning signs, until the encryption process has already been carried out.
Table of Contents
What Trojan.Filecoder.JPA Does
Like other file-encrypting Trojans, Trojan.Filecoder.JPA is typically built to scan an infected computer for documents, images, spreadsheets, databases, and other personal or business files, then encrypt them using a cryptographic algorithm. Once the encryption is complete, victims usually find that their files can no longer be opened normally, and the file names or extensions may appear altered. A ransom note is commonly dropped onto the desktop or inside affected folders, instructing the victim on how to pay a fee, typically in cryptocurrency, in exchange for a decryption key or tool. It's important to understand that paying the ransom does not guarantee that files will actually be restored, and doing so only encourages further criminal activity.
How It Usually Gets Onto Computers
Trojans in this category typically rely on deceptive distribution methods rather than visible exploits. Common infection vectors include:
- Malicious email attachments or links disguised as invoices, shipping notices, or other legitimate-looking documents
- Fake software updates or cracked/pirated software downloads bundled with hidden malware
- Compromised or malicious websites that trigger automatic downloads
- Exploitation of unpatched software vulnerabilities
- Infected removable drives or network shares
Because these infection methods depend heavily on tricking the user, caution when downloading files or clicking links is one of the most effective defenses.
Risks for the User
The primary risk posed by Trojan.Filecoder.JPA is the potential permanent loss of access to important files, especially if no backups exist. Beyond data loss, victims may suffer financial harm if they choose to pay the ransom, with no guarantee of recovery. Some filecoder Trojans are also capable of spreading across connected drives or network shares, increasing the scope of damage in business or home network environments. In some cases, these threats may also collect system information or open the door for additional malware to be installed.
Signs of Infection
Typical indicators that a system has been affected by a file-encrypting Trojan include sudden inability to open personal files, unusual file extensions appended to documents, the appearance of ransom note files in multiple folders, and noticeably slower system performance while encryption is actively taking place.
How to Stay Protected
Users can reduce their risk by keeping regular backups of important files stored offline or disconnected from the main system, applying software and operating system updates promptly, avoiding suspicious email attachments and links, and refraining from downloading pirated or cracked software. Running reputable, up-to-date security software and maintaining cautious browsing habits are also essential steps in defending against threats like Trojan.Filecoder.JPA.
Analysis Report
General information
| Family Name: | Trojan.Filecoder.JPA |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
d483b33722553e4a5114b136727b1cba
SHA1:
7b5812f8fda7fbfab396ff1447f8183db63a776d
SHA256:
3EC727BF1B0F84654FB7A727479F291DE062B1820553BDA381C0633C3BB14A95
File Size:
2.15 MB, 2148245 bytes
|
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 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 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 Traits
- big overlay
- No Version Info
- ntdll
- 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: | 3,895 |
|---|---|
| Potentially Malicious Blocks: | 0 |
| Whitelisted Blocks: | 3,895 |
| 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.- Agent.JDL
- Filecoder.JPA
- Trojan.Agent.Gen.RN
- Trojan.Filecoder.Gen.AK
- Trojan.Filecoder.Gen.AP
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- Trojan.Filecoder.Gen.U
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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