MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically an Auto_Open entry, which is a critical finding. The macros utilize dangerous functions like RUN, indicating an intent to execute arbitrary code. The presence of embedded URLs, although currently classified as benign, suggests a potential for network communication to download and execute a second-stage payload. The macro execution is the primary attack vector observed.
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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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)
- http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
- http://purl.org/dc/elements/1.1/In document text (OLE body)
- http://ns.adobe.com/photoshop/1.0/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) | 179133 bytes |
SHA-256: 959e379e315602feafa627fa362f4926138bf6dfbf88e2e195b2d53b4b7c715b |
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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 25 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, hidden - qkaGPPNSEwEiuuKO ' 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 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 LABEL : Cell Value, String Constant - crkUDFZCGURzNmmOWiLeKizWwICUEaKVaXizOWXgF len=0 ' 0018 22 LABEL : Cell Value, String Constant - CrXggfk len=0 ' 0018 40 LABEL : Cell Value, String Constant - cUsWBygVpfWkuddQQrBNoJnMe len=0 ' 0018 58 LABEL : Cell Value, String Constant - cvEsYUUSXJPWnONdTWOmQusaPjZQeoXXKKluHiDhGYj len=0 ' 0018 56 L ... (truncated) |
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