MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.002 Malicious Link: Malicious File
T1559 Component Object Model Hijacking
T1559.001 Component Object Model Hijacking: Component Object Model
The file is an RTF document that contains embedded OLE object data, specifically triggering heuristics related to the Equation Editor vulnerability. The \objupdate directive forces the activation of this embedded object, which is highly indicative of an exploit attempt. This pattern is commonly used to deliver a malicious payload by leveraging the Equation Editor's ability to execute arbitrary code.
Heuristics 3
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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 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off000000bc.bin1df6591f97387ebf010da0db5eae49d985225a9e7ef6544a5d02af1ede16bb22 |
rtf-objdata-decoded | RTF \objdata at offset 0xBC | 1691 bytes |
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