Techniques › T1027.005 › AN0540
AN0540 Analytic 0540
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detection of known tools or malware flagged by antivirus, followed by a near-term drop of a similar binary with modified signature and resumed activity (execution, C2, or persistence).</p>
- Detects
- T1027.005 Indicator Removal from Tools
- Part of
- DET0189 Detection Strategy for Indicator Removal from Tools - Post-AV Evasion Modification
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| WinEventLog:Application | EventCode=1000 | DC0038 Application Log Content |
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Sysmon | EventCode=11 | DC0039 File Creation |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
AVAlertMessage | Vendor-specific signature string or detection message that can be correlated to threat intel context. |
TimeWindow | The time between AV alert and similar file/process activity (e.g., 5–30 minutes) |
FilenameSimilarityThreshold | String or hash similarity thresholds between original and modified binary. |