Office (OLE) / .XLSX malware analysis — malicious · 4e56e55096f85582

MALICIOUS

Office (OLE) / .XLSX

332.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: 510c1ced9667b698f37b1289eb705a08 SHA-1: 17247bc2e328c86c178f0ac13f061a573be1c48b SHA-256: 4e56e55096f85582450d9a3eb08c1e0984a409a16dd29554790434a58a6c3e2a

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1204.002 Malicious File

The file contains Excel 4.0 macros, specifically an Auto_Open function that utilizes dangerous formula APIs like RUN and ShellExecute. This indicates an attempt to execute arbitrary code. The embedded URL suggests a download or redirection to a malicious resource. The ClamAV detection further supports its malicious nature as a downloader.

Heuristics 5

ClamAV: Doc.Downloader.Docusign0521-9864805-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Docusign0521-9864805-0
Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
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.
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://maharishijeevan.com/ds/151120.gif�

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`xlm_macros.txt` `4d5531650e0faf8764ddd7b14e6947143c32308cbf699d36f8845764b3b4560a`	xlm-macro	oletools.olevba.extract_all_macros (XLM macro listing)	5603 bytes

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