Techniques › T1027.015 › AN0782
AN0782 Analytic 0782
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Monitors for compression tool usage (e.g., 7zip, WinRAR, MakeCab) that follows or precedes file modification, suspicious file types (e.g., .exe, .dll) being compressed, or dropped from self-extracting archives followed by immediate execution.</p>
- Detects
- T1027.015 Compression
- Part of
- DET0281 Detection Strategy for Compressed Payload Creation and 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 |
|---|---|---|
| WinEventLog:Sysmon | EventCode=1 | DC0032 Process Creation |
| WinEventLog:Sysmon | EventCode=11 | DC0039 File 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 |
|---|---|
CompressedFileType | Zip, .rar, .cab, .gz – tune based on expected legitimate use of compression in environment |
SFXExecutionDelay | Expected time between archive unpacking and first execution – short delays are suspicious |
UserContext | Restrict detection to non-admin or interactive users if excessive FPs from sys admin activity |