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

Static analysis result for SHA-256 77ef586cf7b27975…

MALICIOUS

Office (OLE) / .XLS

50.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 2da9d606905a70369f94a6b3f7b59122 SHA-1: 0056720dd1bf51b64f864297151c6b6903d8b3cb SHA-256: 77ef586cf7b279752249ed8a6a6b1449b5ec7f02adf10a2c5f588bc494ce69c8
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 sheet that contains an Auto_Open macro. The macro uses dangerous formula APIs, specifically the RUN function, which is indicative of a downloader. The document body contains text that appears to be part of a lure, instructing the user to enable macros or editing. The extracted URLs are likely used to download the 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://gracefullifetime.com/yqagtiljgk/D�
    • http://gracefullifetime.com/yqagtiljgk/530340.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
8711a51bc59ff2f31b74a306bcfa29d101c9e0c628d87081446c01693382a298
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3545 bytes