MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The RTF document contains embedded OLE object data, and critical heuristics indicate the presence of the CVE-2017-11882 vulnerability within the Equation Editor component. This vulnerability is known to allow for arbitrary code execution when the document is opened. The ".objupdate" directive further suggests that the embedded object is intended to be activated automatically.
Heuristics 3
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CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
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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_off00001df0.bin3a90f0f9d60b500f8c55dc8d543e0af12d4ab857137e4b1d49afedff4761ccb4 |
rtf-objdata-decoded | RTF \objdata at offset 0x1DF0 | 4170 bytes |
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