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

Static analysis result for SHA-256 a066c127cb82adb3…

MALICIOUS

Office (OLE) / .XLS

49.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: e54d723c20a307755cfdfaf182d1958b SHA-1: 7ce5da57e629be279e2de1cdc8ac17b5ce485ea0 SHA-256: a066c127cb82adb3964d27dd7525e64934ea57f802a6c1bb2d8cc7e056b7b180
80 Risk Score

Malware Insights

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

The file contains an Excel 4.0 macro (XLM) that is triggered by the Auto_Open function. This macro is designed to download a file from the URL http://matterandhome.com/twtao/222222.png and save it to C:\ProgramData\Triol. The document also contains a lure instructing the user to enable macros. The presence of the XLM Auto_Open with dangerous formula APIs and the embedded URL strongly indicate a downloader 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://matterandhome.com/twtao/222222.png�
    • http://matterandhome.com/twtao/222222.png

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