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

Static analysis result for SHA-256 c0c6d3e7db17ed40…

MALICIOUS

Office (OLE) / .XLS

70.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 2449a66c09d790528c797e9c6a9b867c SHA-1: b5d759177aa2989135fbf96af574c4b503b3b624 SHA-256: c0c6d3e7db17ed405044dd4bf8df8f14b0a53163f4328713928b7e43de27e613
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell T1059.003 Windows Command Shell

The file is an Excel spreadsheet containing XLM macros, indicated by the OLE_XLM_AUTOOPEN and OLE_XLM_DANGEROUS_FN heuristics. The SE_ENABLE_LURE heuristic confirms the document attempts to trick the user into enabling macros. The XLM macros likely use the dangerous formula APIs, such as RUN, to download and execute a payload from the embedded URLs. The DOC BODY contains API names like CreateDirectoryA, DownloadToFileA, and RouteTheCall, suggesting the macro's functionality.

Heuristics 5

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • 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://traducerejuridica.ro/tenlxhlzpagc/D�
    • http://traducerejuridica.ro/tenlxhlzpagc/625986.png

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
17c2ae317082459c8d413f20d71fd44046de116d9453f38ffc17eaa35745df9d		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3711 bytes
macros.bas
8f1da3b9cfde2aea8d3e5eefb2ed308ddd13ef0003e05a3e9976c57190d9580d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2647 bytes

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