Techniques › T1027 › AN1064
AN1064 Analytic 1064
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Correlates script execution or suspicious parent processes with creation or modification of encoded, compressed, or encrypted file formats (e.g., .zip, .7z, .enc) and abnormal command-line syntax or PowerShell obfuscation.</p>
- Detects
- T1027 Obfuscated Files or Information
- Part of
- DET0378 Behavioral Detection of Obfuscated Files or Information
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=1 | DC0032 Process 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 |
|---|---|
PayloadEntropyThreshold | Tune entropy threshold to distinguish obfuscation from legitimate compression |
TimeWindow | Adjust correlation window between script execution and encoded file creation |
SuspiciousParentProcessList | Customize based on environment to include LOLBins or admin tools misused for obfuscation |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2010-2883 | Adobe Acrobat and Reader | Mapped |
| CVE-2021-40449 | Microsoft Windows | Mapped |
| CVE-2021-40539 | Zoho ManageEngine | Mapped |
| CVE-2021-44077 | Zoho ManageEngine ServiceDesk Plus (SDP) / SupportCenter Plus | Mapped |
| CVE-2022-24086 | Adobe Commerce and Magento Open Source | Mapped |