MALICIOUS
102
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic for Applications
T1204.002 Malicious File
The file is an Excel spreadsheet containing Excel 4.0 macros, specifically an Auto_Open defined name, which is designed to execute automatically when the workbook is opened. The presence of an 'enable macros' lure further indicates malicious intent. The macro likely downloads and executes a second-stage payload from one of the embedded URLs.
Heuristics 4
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
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Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
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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
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — context-specific rules above attribute URLs they actually evaluated; this rule lists URLs that were present in the bytes but were not otherwise tied to a specific finding.URL https://caiogabriel.com.br/tOKLlSLW/lena.html
- https://bwctradex.com/BcotoLXTr1y/lena.html
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txtd46ad6b52df62d280ddc3eb28f4fdfc78bc84dc99077b9aa50809affc4be6057 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 8812 bytes |
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