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 a known vulnerability in the Equation Editor. This technique is commonly used to execute arbitrary code, which in turn is often used to download and run additional malicious payloads. The presence of the 'RTF_EQUATION_EDITOR' and 'RTF_OBJUPDATE' heuristics strongly indicates this exploit.
Heuristics 4
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Split hex Equation Editor ProgID + OLE object critical CVE likely 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 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_off0000a575.bin |
rtf-objdata-decoded | RTF \objdata at offset 0xA575 | 1546 bytes |
SHA-256: 283e77e341e54b63b98eda9b6a1368abe96fe0e943529917f714aa9372565b46 |
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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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