MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1204.002 User Execution: Malicious File
The sample is an RTF document that contains OLE object data and specifically triggers the RTF_EQUATION_EDITOR heuristic. This indicates the exploitation of a vulnerability within the Equation Editor component. The RTF_OBJUPDATE heuristic further suggests that the embedded OLE object is activated automatically, leading to code execution. The likely intent is to leverage this vulnerability to download and execute a secondary payload, although no specific download URL or script was directly extracted from the provided evidence.
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_off000006bf.binb0e056a0590da5e210a936c653777cdb09bf83e04e89683d8f50148356a3c0c6 |
rtf-objdata-decoded | RTF \objdata at offset 0x6BF | 1900 bytes |
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