Techniques › T1557 › AN0824
AN0824 Analytic 0824
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects unauthorized edits to /etc/hosts, /etc/resolv.conf, or suspicious ARP broadcasts. Correlates file modifications with subsequent unexpected network sessions or service creation.</p>
- Detects
- T1557 Adversary-in-the-Middle
- Part of
- DET0296 Detect Adversary-in-the-Middle via Network and Configuration Anomalies
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 |
|---|---|---|
| auditd:SYSCALL | open, write | DC0061 File Modification |
| NSM:Flow | Unexpected ARP replies or DNS responses inconsistent with authoritative servers | DC0085 Network Traffic Content |
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 |
|---|---|
MonitoredFiles | List of system files shaping traffic flow (hosts, resolv.conf, PAM modules). |
ARPThreshold | Rate/volume thresholds for ARP/DNS anomalies tuned per subnet. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2019-5591 | Fortinet FortiOS | Mapped |
| CVE-2022-1040 | Sophos Firewall | Mapped |
| CVE-2025-31200 | Apple Multiple Products | Stale |
| CVE-2025-31201 | Apple Multiple Products | Stale |