MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The RTF document contains embedded OLE object data, specifically triggering the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This exploit allows for arbitrary code execution upon opening the document. The presence of ".objupdate" further indicates that the embedded object is intended to be activated automatically. The primary attack vector is likely a spearphishing attachment.
Heuristics 3
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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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\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_off00000f72.binacdd1c1876da8f06bb196a63542554054e470be8d87fce78cf9c4060cd962483 |
rtf-objdata-decoded | RTF \objdata at offset 0xF72 | 3664 bytes |
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