MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution: Malicious Link
T1566.001 Phishing: Spearphishing Attachment
T1059.005 Command and Scripting Interpreter: Visual Basic
The RTF file contains an embedded OLE object, specifically identified as an Equation Editor exploit. The document body includes a lure instructing the user to 'Enable editing' to view the content, which is a common tactic for macro-based malware. The presence of ".objupdate" further indicates an attempt to force OLE activation, likely to trigger the exploit and download a secondary payload.
Heuristics 5
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Split hex Equation Editor ProgID + OLE object critical 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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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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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_off0000422d.bincf113ef17a05977ad50c37fbd4bd98d414fad541c57c1c7c0c36e511216f86bb |
rtf-objdata-decoded | RTF \objdata at offset 0x422D | 1977 bytes |
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