Techniques › T1027.003 › AN0333
AN0333 Analytic 0333
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects manipulation of PNG, JPG, or GIF files by user-initiated scripts followed by script execution or exfiltration behavior, especially from
osascript, python, or bash, in combination with LaunchAgent persistence or curl activity.</p>- Detects
- T1027.003 Steganography
- Part of
- DET0119 Detection Strategy for Steganographic Abuse in File & Script 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 |
|---|---|---|
| macos:osquery | file_events | DC0055 File Access |
| macos:osquery | process_events | DC0032 Process Creation |
| macos:unifiedlog | network connection events | 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 |
|---|---|
StegoToolNamePatterns | Adapt to known or emerging tools using stego methods on macOS (e.g., `Invoke-PSImage`, `stegsolve`) |
ParentScriptSources | Update list of trusted versus unknown scripting hosts launching activity tied to image handling |