Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 eed49d093ab322ba…

MALICIOUS

Office (OLE) / .XLS

331.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 92d30bec623383cd4478017d62b437cc SHA-1: dde292184d43a270a0fd8041d723bf153f4cfa3d SHA-256: eed49d093ab322baf8a887ac701842ead52c125d93e01d03d4d06b656787ec16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File T1059.004 Shell Script

The file contains an Excel 4.0 macro (Auto_Open) that utilizes ShellExecute to download a payload from the URL http://sadgad.ru/ds/231120.gif. This indicates a downloader functionality. The presence of XLM macros and the use of ShellExecute are strong indicators of malicious intent.

Heuristics 5

  • ClamAV: Doc.Downloader.Docusign0521-9864805-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign0521-9864805-0
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN
    Excel 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.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook 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.
  • Embedded URL info EMBEDDED_URL
    One 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://sadgad.ru/ds/231120.gif

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
3bec9e172ccd232a06c19125f84a780ce4976b1b3bed592580b4a95a301f6034		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 6294 bytes

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