Office (OLE) / .XLSX malware analysis — malicious · d265dfec5e3964bc

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 2e2425e9aefc1d4b3c6a6b727934773a SHA-1: ee97f96c96b170845237f0cf3ef3924400507c2e SHA-256: d265dfec5e3964bcdaae1f503a4e474272e7987d6270601fc315680e7fd3fbbb

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, indicated by the OLE_XLM_AUTOOPEN and OLE_XLM_DANGEROUS_FN heuristics. The SC_STR_SHELLEXEC heuristic points to the use of the ShellExecute API, which is often used to download and execute secondary payloads. The embedded URL is likely part of this download mechanism. The ClamAV detection further supports the malicious nature of the file.

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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