MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment
T1204.002 Malicious File Execution: Malicious Code
The RTF document contains an embedded OLE object that leverages the Equation Editor vulnerability (CVE-1997-2448). The ".bin" file extracted from the objdata section likely contains the second-stage payload. The heuristics strongly indicate exploitation of the Equation Editor, a common vector for initial access.
Heuristics 5
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Equation Editor CLSID critical RTF_EQUATION_EDITOREquation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
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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
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001f3e.bine29da5adc1d1293bd10b5aca3e28b7bdf0bf25687103bf6afdd9318a90d55e14 |
rtf-objdata-decoded | RTF \objdata at offset 0x1F3E | 103510 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.96, consistent with packed or encrypted content.
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