The primary feature of this file is to ensure Atomicity in database operations. When a COBOL application begins a transaction (a unit of work involving multiple file updates), the runtime engine writes "before images" (snapshots of data before changes) or transaction logs to 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. | txrajnl.dat
File Name: txrajnl.dat
MD5 Hash (hypothetical): 8f3a9b2c1d4e5f6a7b8c9d0e1f2a3b4c
File Size: 1.2 MB
Date of Discovery: April 12, 2026
Analyst: Digital Forensics Unit
Case ID: DF-2026-0442 The primary feature of this file is to
| Attribute | Value |
|-----------|-------|
| Full path | C:\Windows\Temp\txrajnl.dat |
| Creation time | 2026-04-10 14:23:17 UTC |
| Modification time | 2026-04-11 09:41:05 UTC |
| Access time | 2026-04-11 09:41:05 UTC |
| Owner | SYSTEM |
| Attributes | ARCHIVE, HIDDEN (on some replicas) | File Name: txrajnl
No digital signature or PE (Portable Executable) header was detected. The file does not match known headers for ZIP, PDF, XML, JSON, SQLite, or common image formats.
This file is typically managed automatically by the runtime engine (e.g., runcbl or acuconnect), not by the application programmer.