Techniques › T1140 › AN0769
AN0769 Analytic 0769
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>The adversary invokes built-in scripting or decoding tools like base64, plutil, or AppleScript-based utilities to decode files embedded in staging artifacts. Decoding often occurs post-download or as part of post-exploitation payload deployment via zsh, python, or osascript.</p>
- Detects
- T1140 Deobfuscate/Decode Files or Information
- Part of
- DET0275 Detect Adversary Deobfuscation or Decoding of Files and Payloads
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:unifiedlog | base64 -d or osascript invoked on staged file | DC0064 Command Execution |
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 |
|---|---|
DecodeInterpreter | Could involve base64, osascript, python, perl, or plutil |
ExecutionContext | Deobfuscation may happen within GUI app context or LaunchAgent/Daemon |
UserContext | May differ depending on local user, root escalation, or persistence method |
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 |