MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The sample is an RTF document that contains embedded OLE objects and triggers the RTF_EQUATION_EDITOR heuristic, indicating exploitation of a vulnerability in the Equation Editor component. The RTF_OBJUPDATE heuristic suggests that the embedded object is configured to automatically activate, likely leading to the execution of a secondary payload. No document body or script content was available for further analysis, limiting the ability to identify specific IOCs or family.
Heuristics 3
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Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITORRTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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\objupdate forces OLE activation high RTF_OBJUPDATERTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
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OLE object data medium RTF_OBJDATARTF contains 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001729.bine53205d4f595007a3fb5bad5b486d69344fa7c577864c28dfd3aca74f150bd0f |
rtf-objdata-decoded | RTF \objdata at offset 0x1729 | 1883 bytes |
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