MALICIOUS
240
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1027 Obfuscated Files or Information
The RTF file contains embedded OLE objects, specifically triggering critical heuristics for Equation Editor CLSID and Ole10Native stream. This strongly indicates exploitation of CVE-2018-0802, a known vulnerability in Microsoft Equation Editor. The ClamAV detection ID further confirms this exploit. The primary attack pattern is exploitation for client execution via a vulnerable OLE object.
Heuristics 6
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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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ClamAV: Rtf.Exploit.CVE_2018_0802-6825822-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Rtf.Exploit.CVE_2018_0802-6825822-0
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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
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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_off000015b4.bin95c66f61dd735759305263bbebdab434021e2ee56872d16b0c21556ae73f8817 |
rtf-objdata-decoded | RTF \objdata at offset 0x15B4 | 4161 bytes |
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