MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1566.001 Spearphishing Attachment
T1059.005 Visual Basic
The sample is an RTF document that leverages the CVE-2017-11882 Equation Editor vulnerability. The presence of OLE object data and an \objupdate directive strongly indicates an attempt to trigger code execution. The document body contains a lure to 'enable editing', which is a common tactic for macro-based malware or exploit documents to bypass security measures.
Heuristics 4
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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
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000018dc.binb7569b70c53ae6f5b3759a62f19ba20b1aba027752fa2600fb2109730db0c72c |
rtf-objdata-decoded | RTF \objdata at offset 0x18DC | 4311 bytes |
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