Techniques › T1021.004 › AN1638
AN1638 Analytic 1638
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>SSH login from a remote system (via sshd), followed by user context execution of suspicious binaries or privilege escalation behavior.</p>
- Detects
- T1021.004 SSH
- Part of
- DET0596 Behavioral Detection of Remote SSH Logins Followed by Post-Login Execution
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:EXECVE | EXECVE | DC0032 Process Creation |
| linux:syslog | None | DC0067 Logon Session Creation |
| NSM:Flow | TCP port 22 traffic | DC0078 Network Traffic Flow |
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 |
|---|---|
TimeWindow | Defines correlation window from login to first post-SSH process (e.g., 60s) |
SuspiciousProcessList | List of binaries considered unusual in SSH context (e.g., nc, base64, bash -i) |
UsernameFilter | Accounts of interest for SSH logins (e.g., root, admin) |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2023-39780 | ASUS RT-AX55 Routers | Mapped |
| CVE-2025-32433 | Erlang Erlang/OTP | Mapped |