Techniques › T1550 › AN0955
AN0955 Analytic 0955
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Access tokens or SSH keys used without corresponding login shell or PAM module activity, particularly for remote execution.</p>
- Detects
- T1550 Use Alternate Authentication Material
- Part of
- DET0338 Behavioral Detection Strategy for Use Alternate Authentication Material (T1550)
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 | execution of ssh, scp, or sftp using previously unseen credentials or keys | DC0002 User Account Authentication |
| NSM:Connections | Accepted publickey for user from unusual IP or without tty | DC0067 Logon Session 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 |
|---|---|
SourceIPWhitelist | Tune for approved jump boxes or bastion hosts |
AuthMethod | Filter on use of password vs publickey methods for better coverage |