MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution: Malicious Link
T1204.002 User Execution: Malicious File
T1059.005 Command and Scripting Interpreter: Visual Basic
The sample is an RTF document exploiting the Equation Editor vulnerability (CVE-2017-11882) via an embedded OLE object. The document body contains a lure related to financial auditing, instructing the user to 'Enable editing' and likely macros. The presence of RTF_OBJDATA, RTF_OBJAUTLINK, and RTF_OBJUPDATE heuristics confirms the exploitation of OLE object functionality.
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_off00002dbc.bin390a2bdc018045460f09d3556072a18ec7f6b1b14a5fe963fefcc9a9ddbe6dce |
rtf-objdata-decoded | RTF \objdata at offset 0x2DBC | 1551 bytes |
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