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

Static analysis result for SHA-256 cbccc40ac3ad80b8…

MALICIOUS

Office (OLE) / .XLS

1.68 MB Created: 2015-06-05 18:19:34 Authoring application: Microsoft Excel
MD5: d117070e094f5dde0004811704cc5170 SHA-1: 814b0fa19c26c0b3b26054dde6c2f4fa94bebd48 SHA-256: cbccc40ac3ad80b8ac6a5d2ca74a3cb77b01191e267fe105a0fc5a28e69b61e4
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic firing indicates the presence of an Excel 4.0 Auto_Open macro, which is a strong indicator of malicious intent. The extracted document body contains URLs and what appears to be a function call to download a file to '..\GVer.iks'. This suggests the macro is designed to download and execute a second-stage payload from the provided URLs.

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

Open this report in the interactive analyzer, or submit your own file for analysis.