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

Static analysis result for SHA-256 2d14a8395f773d37…

MALICIOUS

Office (OLE) / .XLS

1.68 MB Created: 2015-06-05 18:19:34 Authoring application: Microsoft Excel
MD5: 6d06273b444adb8c561e342da8130647 SHA-1: ccf57bc5cc27b173dccf973b62fa392c68e2e241 SHA-256: 2d14a8395f773d3733931f5e9b0c1d79b9aa9f95669dd82fc956498dc53edff1
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications

The critical heuristic firing for OLE_XLM_AUTOOPEN_DEFINEDNAME indicates the presence of an Excel 4.0 Auto_Open macro. The DOC BODY excerpt further confirms this by listing URLs and a function call 'RLDownloadToFileA', strongly suggesting the macro's purpose is to download and execute a payload from the provided URLs. The specific URLs are therefore high-priority IOCs.

Heuristics 3

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • 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 http://ravepsychiatry.com/t/optonline.php
    • http://ravepsychiatry.com/t/sore.php�
    • http://ravepsychiatry.com/t/sore.php

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
8dc0696af778b4720cf9b83a683d4982f5831ab48e06935822f0139385499d0f		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3130 bytes

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