MALICIOUS
121
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
T1566.001 Spearphishing Attachment
The sample is an RTF document that contains OLE object data and triggers an update action, indicating it's designed to exploit embedded objects. Specifically, the RTF_EQUATION_EDITOR heuristic points to a known vulnerability in Microsoft Equation Editor. This vulnerability is commonly used to download and execute arbitrary code, making it highly probable that this document attempts to deliver a secondary payload. No document body text or scripts were extracted, limiting further analysis of the specific payload.
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_off00001f58.bina126f87f933c08b215645e799f599534eaa50881095d5550e57eeae5aedd1e0c |
rtf-objdata-decoded | RTF \objdata at offset 0x1F58 | 1766 bytes |
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