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

Static analysis result for SHA-256 86f77eff390cf5c8…

MALICIOUS

Office (OLE) / .XLS

110.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 92e2cd815e4e84486a8d25ffd0526355 SHA-1: 1dd1eb9dd0805b6063b78e041c7e3c1e4e7f5feb SHA-256: 86f77eff390cf5c80e010ffdba10ad06085b8ca41af0ffe4b77ed52817c3e87e
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file contains an Excel 4.0 macro (Auto_Open) that utilizes dangerous functions like RUN and URLDownloadToFileA. The macro attempts to download a file from 'http://oceanbm.ca/hpplo/555555555.png' and likely execute it. The document body contains text that appears to be sheet names and embedded URL references, further supporting the macro's download and execution intent.

Heuristics 4

  • 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
  • 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://oceanbm.ca/hpplo/555555555.png�
    • http://oceanbm.ca/hpplo/555555555.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
9e9ec2d22ac7379daeadedfc85977bfd4377249b9e9d8bd43d27f59ecd127e35		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 4733 bytes

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