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

Static analysis result for SHA-256 c5082b7827237445…

MALICIOUS

Office (OLE) / .XLS

50.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 760ec43f88e9334dd7e054a74ea0f791 SHA-1: 9ee2e9c278e5e94fe4d61b4e65a4f486cd31bb25 SHA-256: c5082b7827237445983c03b127716f9c0cceed6dcf45d866758ebfad56a57e6c
80 Risk Score

Malware Insights

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

The file is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro that uses dangerous functions, specifically the RUN function (RUN=0), indicating it attempts to execute an external program. The document body contains text that could be interpreted as a lure to enable macros or editing. The embedded URLs are likely used to download and execute a second-stage payload.

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://jmdmenswear.com/dvxqi/D�
    • http://jmdmenswear.com/dvxqi/530340.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
f83cd52a7ac168aa1ae6005759a59e85d1c72ac1cfa5eed0ee1db43c793638b0
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3535 bytes