MALICIOUS
121
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.001 PowerShell
The sample is an RTF document that contains embedded OLE object data and specifically targets the Equation Editor component. The presence of RTF_EQUATION_EDITOR and RTF_OBJUPDATE heuristics indicates an attempt to exploit a known vulnerability in the Equation Editor to achieve code execution. The RTF_OBJDATA heuristic further confirms the embedding of OLE objects, which is a common delivery mechanism for such exploits. No specific malware family could be identified, but the attack pattern is consistent with exploiting a vulnerable application to download and execute a secondary payload.
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 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off0000180c.bin4d05afabd01a3a1d2119b28c19a47994e1d8052fa1854a0be704acff71f47908 |
rtf-objdata-decoded | RTF \objdata at offset 0x180C | 2277 bytes |
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