MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution
T1204.002 Malicious File
T1059 Command and Scripting Interpreter
T1059.005 Visual Basic
The sample is an RTF document that leverages the Equation Editor vulnerability (CVE-2017-11882) to execute code. The 'SE_ENABLE_LURE' heuristic indicates the document likely contains a prompt to enable editing or macros, a common social engineering tactic. The presence of OLE object data and automatic linking further supports the exploitation of embedded objects within the RTF structure. The specific exploit and delivery mechanism point towards a downloader or initial access 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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Automatically linked OLE object high RTF_OBJAUTLINKRTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
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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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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_off00002123.bin2087401f8dbd9f9b65f630ac7ce76478229d350a35472e6cbeb560771125ac68 |
rtf-objdata-decoded | RTF \objdata at offset 0x2123 | 1511 bytes |
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