MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The RTF file contains an embedded OLE object that leverages the Equation Editor vulnerability (CVE-2017-11882). This technique is commonly used to deliver a second-stage payload, likely shellcode as indicated by the 'Shellcode candidate region' heuristic. The file's structure and heuristic firings strongly suggest exploitation for client execution, likely delivered via spearphishing.
Heuristics 4
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Equation Editor CLSID critical CVE likely 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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Suspicious extracted artifact medium 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_off00000033.bin |
rtf-objdata-decoded | RTF \objdata at offset 0x33 | 3636 bytes |
SHA-256: 517c90f1325c104b274c415291f9f3413de8ebebfb421b6c7ff9978095fdcd1b |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL
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