Techniques › T1176 › AN0251
AN0251 Analytic 0251
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Installation or execution of a malicious browser or IDE extension, followed by abnormal registry entries or outbound network connections from the host application</p>
- Detects
- T1176 Software Extensions
- Part of
- DET0092 Detection of Malicious or Unauthorized Software Extensions
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 |
|---|---|---|
| WinEventLog:Security | EventCode=4688 | DC0032 Process Creation |
| WinEventLog:Sysmon | EventCode=11 | DC0039 File Creation |
| WinEventLog:Sysmon | EventCode=13, 14 | DC0063 Windows Registry Key Modification |
| WinEventLog:Sysmon | EventCode=3, 22 | 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 |
|---|---|
Image | Path of browser or IDE launching subprocesses—may vary depending on installed applications |
ParentImage | Legitimate parent-child process relationships for known safe extensions |
RegistryPath | Expected registry keys under HKCU/HKLM for installed extensions |
TimeWindow | Tunable interval to correlate extension install with follow-on C2 traffic |