Malware Insights
The sample is an RTF document containing an embedded OLE object, indicated by RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that the embedded object is designed to be activated automatically. The SE_ENABLE_LURE heuristic confirms that the document contains a prompt to 'Enable editing', a common social engineering tactic to bypass macro security. The document body discusses financial statements and auditors, likely a pretext to trick the user into enabling editing and triggering the malicious OLE object.
Heuristics 4
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Ole10Native stream in RTF OLE object high RTF_OLE10NATIVE_STREAMRTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
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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_off00002b47.bin0b49df7e4e97cf9fefae8992009011df4013b082dee31985dc72fce7674bb08b |
rtf-objdata-decoded | RTF \objdata at offset 0x2B47 | 4168 bytes |
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