MALICIOUS
240
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The RTF file contains embedded OLE object data and specifically triggers heuristics related to Equation Editor and CVE-2017-11882. This indicates the file is designed to exploit a known vulnerability in Microsoft Equation Editor to achieve code execution. The presence of the exploit suggests it was likely delivered as a spearphishing attachment.
Heuristics 5
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Equation Editor CLSID critical CVE likely 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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CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
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ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
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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 1 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off0000003b.bin |
rtf-objdata-decoded | RTF \objdata at offset 0x3B | 4658 bytes |
SHA-256: d86823283f720040c2b8501788eea4c91807d9bf2f87f2931ee0c47642a20552 |
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