The file $TXRAJNL.DAT is a hidden system file primarily associated with the transactional journaling feature of the exFAT file system.
Hidden File: It is typically categorized as a system file, meaning it may only be visible if your file explorer is set to "Show hidden files and folders." txrajnl.dat
| Scenario | Likelihood | Justification |
|----------|------------|----------------|
| Custom application log (obfuscated) | 40% | tx_ prefix suggests transaction log. |
| Malware component | 35% | High entropy + injection behavior. |
| Corrupted temporary database | 15% | Presence of queue.bin path. |
| Decoy or honeypot file | 10% | Deliberate anti-forensic naming. | The file $TXRAJNL
: Its presence generally indicates a recent write or update operation (e.g., a channel list export on a TV or a firmware download on a GPS). Maintenance Safe to Delete : Community consensus from Native Instruments First 4 bytes (hex): 0x4B 0x45 0x59 0x03
Non-Malicious: The presence of this file is normal for exFAT-formatted drives and does not indicate a virus or malware.
The "txraj" in the name likely stands for Transactional Journaling. In computing, a journaling file system keeps track of changes not yet committed to the main part of the file system.
False Positives: Some antivirus programs might flag unknown .dat files on the root of a drive, but if the file appeared after using your SD card in a music sampler or smart device, it is safe.
0x4B 0x45 0x59 0x03 → KEY\x03