MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The file is an RTF document that contains embedded OLE object data and specifically triggers the Equation Editor vulnerability. The ".objupdate" directive indicates that the embedded object is intended to be activated automatically. This strongly suggests exploitation of the Equation Editor component to achieve arbitrary code execution, likely for downloading and executing a second-stage payload.
Heuristics 4
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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
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000010ef.bin7bfa04e5b9b45ba783356674f7bb932d1f96585253f0fcd78f5d3d5d354fe124 |
rtf-objdata-decoded | RTF \objdata at offset 0x10EF | 4180 bytes |
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