MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1559.001 Component Object Model Hijacking
T1204.002 Malicious File Execution: User Execution: Malicious File
The RTF document contains multiple indicators of malicious OLE object usage, specifically targeting the Equation Editor. The presence of `RTF_EQUATION_EDITOR`, `RTF_OBJAUTLINK`, `RTF_OBJUPDATE`, and `RTF_OBJDATA` heuristics strongly suggests an exploit targeting a known vulnerability in Microsoft Equation Editor. This exploit is designed to execute arbitrary code, likely to download and run a second-stage payload.
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_off0000201f.bin155852d609854227b84ae3dc8628b64b3109d1b1bf0b460c8b3a79984add6159 |
rtf-objdata-decoded | RTF \objdata at offset 0x201F | 2046 bytes |
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