MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.002 Malicious File
T1059 Command and Scripting Interpreter
T1559 Component Object Model Hijacking
T1559.001 Component Object Model
The RTF document contains embedded OLE objects, specifically targeting the Equation Editor component. The presence of \objautlink, \objdata, and \objupdate control words strongly indicates the exploitation of CVE-2017-11882 or a similar vulnerability. This mechanism allows for automatic execution of malicious code upon opening the document, likely leading to the download and execution of a second-stage payload.
Heuristics 4
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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 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000000f8.bine7c39c956e492dd5f9435e9910de00abf38d52af2afaecb5f1ebf81cd604eef8 |
rtf-objdata-decoded | RTF \objdata at offset 0xF8 | 1721 bytes |
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