MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1204.002 Malicious File
The sample is an RTF document containing OLE object data and specifically triggers heuristics related to the Equation Editor vulnerability (CVE-2017-11882). The presence of \objdata and \objupdate directives strongly suggests an attempt to exploit this vulnerability for remote code execution. The decoded OLE object data has high entropy, indicating it likely contains obfuscated or packed code, consistent with a downloader or initial access payload.
Heuristics 4
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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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\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_off00001f3f.bin38f2e7ef36be004566455ea98a2c22838e233f0f85ce56afd4ef2023a1fbe9d3 |
rtf-objdata-decoded | RTF \objdata at offset 0x1F3F | 4289 bytes |
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