MALICIOUS
200
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1559.001 Component Object Model
The RTF document contains an embedded OLE object with a CLSID indicative of the Equation Editor. The presence of \objdata and \objupdate directives strongly suggests that the embedded object is designed to be automatically activated upon opening the document, leading to the exploitation of a known vulnerability in Equation Editor to achieve arbitrary code execution. No document body or script content was available for further analysis.
Heuristics 5
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Ole10Native stream in RTF OLE object high RTF_OLE10NATIVE_STREAMRTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
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Equation Editor CLSID critical RTF_EQUATION_EDITOREquation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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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 1 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00000041.bin2024f9f958ca44755dcf5fda8ca088227894b9a3d6139955214c90e4937100b9 |
rtf-objdata-decoded | RTF \objdata at offset 0x41 | 4159 bytes |
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