Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 94971f424d57471c…

MALICIOUS

Office (OLE)

644.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2021-05-29
MD5: 9d2c79aa489c874bd6d9fe816ce93e2c SHA-1: e3bf7b6b78bed776c3c8f8855f3920fd920abb9b SHA-256: 94971f424d57471c089ea54e49ef74a43349423de97fd01ecf5d703414b64b19
62 Risk Score

Malware Insights

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

The Excel file contains dangerous Excel 4.0 (XLM) macro functions, specifically CALL and EXEC, which are used to download and execute payloads from the provided URLs. The presence of these functions indicates an attempt to download and run a second-stage malicious file, likely to compromise the user's system.

Heuristics 3

  • Excel 4.0 (XLM) macro sheet uses dangerous capability functions high OLE_XLM_DANGEROUS_FN_STATIC
    Workbook contains an Excel 4.0 macro sheet whose formulas reference two or more dangerous capability functions (e.g. CALL into a Win32 API such as URLDownloadToFile, EXEC to launch a process, REGISTER an external DLL procedure, or FWRITE/FOPEN to drop a file) with an Auto_Open / Auto_Close auto-execution name. This is the canonical XLM downloader/dropper shape and is recovered directly from the BIFF records, so it fires even when the full macro chain cannot be deobfuscated.
  • 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.
  • 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 https://actualitatea-crestina.ro/vAaimKTJbZgA/ork.html Referenced by macro
    • https://baro-care.de/AcQy6YJYOdr/ork.htmlReferenced by macro