MALICIOUS
122
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The RTF file contains an embedded OLE object with a split Equation Editor ProgID, indicating an attempt to exploit a known vulnerability in the Equation Editor component. The \objupdate directive forces OLE object activation, which is a common technique for executing embedded exploits. This likely leads to arbitrary code execution on the victim's machine, commonly delivered via spearphishing attachments.
Heuristics 4
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Split hex Equation Editor ProgID + OLE object critical CVE likely RTF_EQUATION_EDITORRTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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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
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://schemas.microsoft.com/office/word/2003/wordml In RTF body
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001661.bin |
rtf-objdata-decoded | RTF \objdata at offset 0x1661 | 1347 bytes |
SHA-256: 830d31df7bfab0cc63ce0b512508b01dc4a41cd93a313ab750611d33764448d5 |
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