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

Static analysis result for SHA-256 2e9670aa46192226…

MALICIOUS

Office (OLE) / .XLS

103.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: bdd5f751327750cd9313848b8f47f6b3 SHA-1: 325d85390afbc5c86136a0b2184fb2b93231c2a0 SHA-256: 2e9670aa46192226a352776e4effa7939c999a1844edcf6f6a99b080621fc607
80 Risk Score

Malware Insights

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

The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro that uses dangerous formula APIs, specifically the RUN function, to execute code. The document body contains text that appears to be a lure, instructing the user to enable macros or editing to view a DocuSign document. The embedded URL 'http://padgettconsultants.ca/tau.gif' is 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://padgettconsultants.ca/tau.gif�
    • http://padgettconsultants.ca/tau.gif

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
878a3ffd2192869b3e95af1a302960a3b5d7de3cf1ea8c3286d25d53b5877fc4
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2066 bytes