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

Static analysis result for SHA-256 8c1d5a80bda7811c…

MALICIOUS

Office (OLE) / .XLS

51.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 02be93957245db1d216011ff3454b01c SHA-1: 1c6d4c2455a6abcf8f95b0945f1700edd1dabab7 SHA-256: 8c1d5a80bda7811c9397db222657db2c3c1dab99a2535a250298fe6148a64b17
80 Risk Score

Malware Insights

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

The file contains Excel 4.0 (XLM) macros, specifically an Auto_Open macro that utilizes dangerous formula APIs, including a RUN function. This indicates an attempt to execute arbitrary code. The document also contains a lure to enable macros, a common technique for malware droppers. The extracted URLs likely point to the secondary payload. The macro's intent is to download and execute a payload from the embedded URLs.

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://brandtodigital.com/pazpivrodq/D�
    • http://brandtodigital.com/pazpivrodq/3415201.png

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
a613edccd892ef9befaae81ec52797c72aeac54bd173438cc89fc530d21aee6c
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3679 bytes