MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File: User Execution
The sample is an RTF document exploiting the Equation Editor vulnerability, indicated by the RTF_EQUATION_EDITOR and RTF_OBJUPDATE heuristics. It uses a common lure to trick users into enabling content, suggesting it's a dropper for a malicious payload. No scripts were extracted, and the document body content is unrelated to the exploit, serving only as a distraction.
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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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00005094.bind88585852eed619b320e3026f06bd79b262c15e6cc2a2dbeb876e24a27ecd8fe |
rtf-objdata-decoded | RTF \objdata at offset 0x5094 | 1750 bytes |
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