Techniques › T1218 › AN0227
AN0227 Analytic 0227
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Execution of trusted system binaries (e.g.,
split, tee, bash, env) used in uncommon sequences or chained behaviors to execute malicious payloads or perform actions inconsistent with normal system or script behavior.</p>- Detects
- T1218 System Binary Proxy Execution
- Part of
- DET0081 Detection of Proxy Execution via Trusted Signed Binaries Across Platforms
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 | execve | DC0032 Process Creation |
| auditd:SYSCALL | connect | DC0082 Network Connection 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 |
|---|---|
TrustedBinaryList | Binaries like `split`, `tee`, `env`, `awk`, `gzip`, often used in benign scripts |
AnomalyScore | Outlier model for process tree and command arguments |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-40539 | Zoho ManageEngine | Mapped |
| CVE-2021-44077 | Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus | Mapped |