MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The sample is identified as malicious by ClamAV and exhibits critical heuristic firings for Excel 4.0 macros, including the use of dangerous functions like RUN. The presence of an Auto_Open defined name indicates that these macros are designed to execute automatically upon opening the workbook. The embedded URLs are confirmed benign, and no scripts were extracted beyond the XLM macro definitions. The primary attack vector appears to be the exploitation of Excel 4.0 macro capabilities to initiate further malicious activity.
Heuristics 5
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ClamAV: Xls.Dropper.Agent-8075428-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-8075428-0
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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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XLM Auto_Open with dangerous formula APIs critical 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 http://www.w3.org/1999/02/22-rdf-syntax-ns# In document text (OLE body)
- http://ns.adobe.com/xap/1.0/In document text (OLE body)
- http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
- http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 165318 bytes |
SHA-256: d40c79db58cb5a7bfc0d3d97d6afe6a792dc500362f6b288cdc0c52cf0d23001 |
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Preview scriptFirst 1,000 lines of the extracted script
' 0085 20 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, hidden - sodxnesDllY ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 18 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - gmGOEjefd ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet1 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet2 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet3 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet3 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet3 ' 0085 15 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - Sheet3 ' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0018 45 LABEL : Cell Value, String Constant - aBmDGJBZDhRNCWNERbKKxjLhtIpHsw len=0 ' 0018 56 LABEL : Cell Value, String Constant - aBmDGJBZDhSNCWNERbLKxjLhtIpHswXLJDVSoKjok len=0 ' 0018 18 LABEL : Cell Value, String Constant - aOL len=0 ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d sodxnesDllY!HE34370 ' 0018 49 LABEL : Cell Value, String Constant - ayqmyPeznwUPsubvBJyennlqOVcHTTimph len=0 ' 0018 42 LABEL : Cell Value, String Constant - baCjBmqRrDwPMiEdVRctJeSbytX len=0 ' 0018 49 LABEL : Cell Value, String Constant - BwkGvmBLttgTtQdrYqcgGtrlEBXtSYUfix len=0 ' 0018 45 LABEL : Cell Value, String Constant - byRdRPJbYueouqDUVqrBYGjyflFNDi len=0 ' 0018 33 LABEL : Cell Value, String Constant - BzQTWOnCufNPjMRebK len=0 ' 0018 35 LABEL : Cell Value, String Constant - cHhTjmphHjOytiDtkxJr len=0 ' 0018 54 LABEL : Cell Value, String Constant - CJQtHGWadUtJClTVqTXlhQeEEenzcvbyRqRcWoY len=0 ' 0018 56 ... (truncated) |
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