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

Static analysis result for SHA-256 577743523a716807…

MALICIOUS

Office (OLE) / .XLS

50.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 47ef77c9f6b804fca169ef7d0acdfee4 SHA-1: d176b76adf0936f37c7dc360789e3cdae0b6cf3e SHA-256: 577743523a7168075d37738014074e153311e9c50824363e46eee71be4de42b0
80 Risk Score

Malware Insights

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

The file is an Excel 4.0 (XLM) macro-enabled spreadsheet. The presence of an Auto_Open macro with dangerous functions, specifically the RUN function, indicates malicious intent. The document body and heuristics suggest a lure to enable macros, a common tactic for malware droppers. The embedded URLs are likely used to download the next stage of the attack.

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://www.bagdee.com/tdoqysixjjch/D�
    • http://www.bagdee.com/tdoqysixjjch/530340.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
f588929b6758f3a620df646290a7479a241da992f86549a55f6ce46bbfefdc41		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3519 bytes

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