MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The presence of Excel 4.0 macros, specifically an Auto_Open macro utilizing dangerous functions like RUN, strongly indicates malicious intent. The macro is likely designed to execute arbitrary commands, as suggested by the ShellExecute API reference. The embedded URLs are probable sources for downloading and executing a secondary payload, consistent with a downloader attack pattern. The ClamAV detection further supports the malicious classification.
Heuristics 5
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ClamAV: Doc.Downloader.Docusign0521-9864805-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.Docusign0521-9864805-0
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Reference to ShellExecute API high SC_STR_SHELLEXECReference to ShellExecute API
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XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FNExcel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
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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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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://zerones.biz/ds/261120.gif
- https://zerones.biz/ds/261120.gif�
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt7fbdfe5319125c7a88728c7d99286583a9907fcc6c0161898412d727b081f128 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 6676 bytes |
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