MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File
T1566.001 Phishing: Spearphishing Attachment
The file is an RTF document that contains embedded OLE object data and specifically targets the Equation Editor vulnerability (CVE-2017-11882). The presence of ".objupdate" directives indicates that the embedded object is designed to be activated automatically upon opening the document. This exploit is known to download and execute a second-stage payload, although no specific payload details or URLs were extracted from this sample.
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_off00001990.bin19a28bf459da76328236b65f7039335891643e5a6df3190887a11c84fecaabd2 |
rtf-objdata-decoded | RTF \objdata at offset 0x1990 | 4174 bytes |
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