MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The sample is an RTF document that leverages the Equation Editor vulnerability (CVE-2017-11882), as indicated by multiple critical heuristic firings and ClamAV detection. The presence of OLE object data and the ".objupdate" directive strongly suggest an exploit designed to trigger code execution upon opening. While no specific second-stage payload or URL was directly extracted, the exploit's nature points towards a downloader or dropper.
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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ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTIONClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
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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_off000014b9.bind5c4df89aa7c62c33e998c7ee22b7b40345869e96056f124ff6df82129ce70be |
rtf-objdata-decoded | RTF \objdata at offset 0x14B9 | 3663 bytes |
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