Trojan.Kryptik.BDRN
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) |
| First Seen: | November 7, 2026 |
| Last Seen: | November 8, 2026 |
| OS(es) Affected: | Windows |
Trojan.Kryptik.BDRN is a Windows Trojan detection. Trojans pose as something harmless or useful while carrying out harmful actions in the background. This one is rated 8 out of 10 for danger. The feed data shows it was first seen on 2026-11-07 and last seen on 2026-11-08, with a single detection recorded so far.
Table of Contents
What the threat does
According to the feed description, Kryptik.BDRN runs silently in the background and performs malicious functions. It may give attackers complete control over an infected system. It may also covertly delete files and install additional unwanted software.
The analyzed sample is a 64-bit, native (not .NET) Windows GUI executable that is not packed. It has no digital signature. It also carries version information that claims it is qBittorrent v4.6.2 from "The qBittorrent project", with the original filename Message.exe. Because the file has no signature and is flagged as malicious, this looks like a disguise. Malware often copies the details of a well-known program to appear trustworthy. The feed does not say how the sample was distributed.
Other technical traits reported include multiple executable sections, a large overlay (extra data appended to the file) and an NSIS installer marker. Behavior recorded during analysis shows the sample modifying one file in a Microsoft Windows folder inside the user's local application data. It also used low-level system calls to write files, manage memory and read registry keys. Of 40 recorded network or resource blocks, 29 were flagged as potentially malicious and 11 were whitelisted.
How it usually gets onto computers
The feed says Kryptik.BDRN installs itself stealthily, most often through:
- Exploiting system vulnerabilities and security flaws.
- Software downloads from malicious websites.
- Email attachments from untrusted sources, usually .exe, .pif, .avi and even .jpg files.
Given the qBittorrent disguise, it is reasonable to be cautious with unofficial downloads of popular software. This is only an observation about the sample's labeling, not a confirmed distribution method.
Risks for the user
- Loss of control: an attacker may be able to take over your system remotely.
- File deletion: data may be removed without your knowledge.
- More malware: additional unwanted programs may be installed.
Trojans of this type commonly also expose personal data such as saved passwords and documents, though the feed does not specifically confirm this for Kryptik.BDRN.
Signs of infection
This Trojan is designed to run silently, so there may be no obvious symptoms. The feed does not list specific symptoms. Typical signs of Trojan infections include:
- Unexplained slowdowns or high CPU or network usage.
- Unfamiliar programs or processes you did not install.
- Missing or changed files.
- Security settings that change or turn off on their own.
- A program called qBittorrent, or an executable named Message.exe, that you did not knowingly install from the official source.
How to stay protected
- Keep Windows and all your software updated to close the vulnerabilities this kind of threat exploits.
- Download software only from the official website of its developer, and avoid unofficial mirrors and cracked versions.
- Do not open attachments from unknown senders, especially .exe, .pif, .avi or .jpg files that seem out of place.
- Be suspicious of programs that have no digital signature or whose details do not match where you got them.
- Use a reputable, up-to-date security tool to run a full system scan, and keep regular backups of important files on a separate device.
- If you suspect an infection, disconnect from the internet, scan the computer, and change your passwords from a clean device.
Analysis Report
General information
| Family Name: | Trojan.Kryptik.BDRN |
|---|---|
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
dd918f44520b1e63bd73075a2b43ec19
SHA1:
6549c0e5e15230b888d7410d089f885f3ac965ca
SHA256:
9D3552F2CDBBD9DDBB55EB7F7F1C37428AF0009B06C13AE568642D9B8739FD0C
File Size:
6.99 MB, 6988498 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 relocations information
- File doesn't have security information
- File is 64-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 2 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 |
|---|---|
| Company Name | The qBittorrent project |
| File Description | qBittorrent v4.6.2 |
| File Version | 4.6.2.0 |
| Internal Name | Message |
| Legal Copyright | Copyright (C) 2006-2023 The qBittorrent project |
| Original Filename | Message.exe |
| Product Name | qBittorrent |
| Product Version | 4.6.2 |
File Traits
- 2+ executable sections
- big overlay
- nosig nsis
- 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: | 40 |
|---|---|
| Potentially Malicious Blocks: | 29 |
| Whitelisted Blocks: | 11 |
| 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.- Kryptik.BDRN
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\10012e86.dat | Generic Write,Read Attributes |
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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