MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The sample is an RTF document that contains an embedded OLE object, specifically targeting the Equation Editor vulnerability (CLSID). The \objupdate directive indicates that the embedded object is designed to be activated automatically upon opening the document. This strongly suggests an exploit delivery mechanism, likely leading to the execution of a secondary payload. No document body text or scripts were extracted, but the critical heuristic firings are sufficient to infer the attack vector.
Heuristics 3
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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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\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_off0000199c.bin24f217154bfa8c032f32310a56239d27e1a678f53d225a10dd175f81fc30a5fc |
rtf-objdata-decoded | RTF \objdata at offset 0x199C | 4172 bytes |
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