MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.002 Malicious Link: Malicious File
T1059 Command and Scripting Interpreter
T1566 Phishing
T1566.001 Phishing: Spearphishing Attachment
T1566.002 Phishing: Spearphishing Link
The sample is an RTF document that contains an embedded OLE object, specifically targeting the Equation Editor vulnerability. The presence of `RTF_EQUATION_EDITOR`, `RTF_OBJAUTLINK`, and `RTF_OBJUPDATE` heuristics strongly indicates that this document is designed to exploit this vulnerability. This exploit likely leads to the download and execution of a secondary malicious payload, characteristic of a downloader or initial access stage.
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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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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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_off0000134a.bind7cca2ee8755b4bc93a9d9268fbaf72d15ee280e1d3379fb5b57b0aeaa983757 |
rtf-objdata-decoded | RTF \objdata at offset 0x134A | 1517 bytes |
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