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

Static analysis result for SHA-256 f726cbe23062b21e…

MALICIOUS

Office (OLE) / .XLS

103.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: fcca012018f8aa9fbfeb705664a5db2b SHA-1: 71123bd3c44bc29a49f4e65d14bc5e52c52927c2 SHA-256: f726cbe23062b21e3eee285a2fb0d3b8d86bcf918b2b52c32f4949a86f66514e
80 Risk Score

Malware Insights

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

The sample is an Excel 4.0 (XLM) spreadsheet containing an Auto_Open macro. The document body presents a fake DocuSign notification to trick the user into enabling macros. The embedded XLM macro uses dangerous functions, including RUN, to download a file from the URL http://agnipankhpan.in/wrzjpkrcgr/5555555555.png. This indicates the macro is likely a downloader for 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://agnipankhpan.in/wrzjpkrcgr/5555555555.png�
    • http://agnipankhpan.in/wrzjpkrcgr/5555555555.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
fb73fc49ba9c271271983c838bc08a8f05062b002da3ef947ae2da8f435d7308
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2271 bytes