MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The critical RTF_EQUATION_EDITOR heuristic indicates exploitation of the Equation Editor vulnerability. The RTF_OBJDATA and RTF_OBJUPDATE heuristics further confirm the presence and activation of embedded OLE objects, which are commonly used to deliver exploits. The lack of document body text or scripts prevents a more detailed analysis of the payload, but the exploit itself is sufficient to classify this as malicious.
Heuristics 3
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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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00000876.bind82db4f9979cea6ed4d01730b711e4d239daa484f564e9e56a898e2172253339 |
rtf-objdata-decoded | RTF \objdata at offset 0x876 | 48151 bytes |
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