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

Static analysis result for SHA-256 977e4c0822bcae6d…

MALICIOUS

Office (OLE) / .XLS

50.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 254d84dfb21a429011b62739252ab40b SHA-1: 0be334680c99052eec19a30445e58cb8e33633ce SHA-256: 977e4c0822bcae6d4ca37c8ea1f2dd5347d02f6a09309a26316417a92a1db894
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 sheet that uses the Auto_Open function to execute dangerous APIs, specifically the RUN function. The document body presents a fake DocuSign interface to trick the user into enabling macros. The embedded URL 'http://staging.stikbot.toys/24.gif' is used to download a file, and the XLM macro attempts to save it as 'C:\ProgramData\Triolexplorer.exe' and execute it. This indicates a downloader or droppper functionality.

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://staging.stikbot.toys/24.gif�
    • http://staging.stikbot.toys/24.gif

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
b85a04030ee15a5823afbe8a5c58782f7c760714b2f75fcf902d376138ea1320		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2772 bytes

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