MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
T1204.002 Malicious File: User Execution
The sample is an RTF document containing an embedded OLE object, specifically identified as an Equation Editor exploit. The `RTF_OBJUPDATE` heuristic indicates that the object is designed to be activated automatically, suggesting an attempt to execute malicious code upon opening. This is a common technique for exploiting vulnerabilities like the one in Equation Editor to achieve arbitrary code execution.
Heuristics 4
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Split hex Equation Editor ProgID + OLE object critical 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 OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001e00.binbb2058b1f285348c582f90f65da039e1eb6c21149a07e34b033f97a73563c29d |
rtf-objdata-decoded | RTF \objdata at offset 0x1E00 | 43192 bytes |
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