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

Static analysis result for SHA-256 6ea1b2c7554415a6…

MALICIOUS

Office (OLE) / .XLS

1023.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 0f801911175f5e9ae868b92d873e259e SHA-1: ac5eeeb866ec0780db306083f3e04efe92d03f25 SHA-256: 6ea1b2c7554415a62b223aea1da4b65758c601de1d352f26ba66539d410c9c38
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.005 Visual Basic

The file is an Excel spreadsheet that exploits CVE-2017-0199 via an OLE2Link object. This object contains a URL that points to a remote loader. The VBA macros are present but do not contain executable statements, suggesting the exploit is directly embedded in the OLE structure. The primary goal appears to be downloading and executing a second-stage payload from the provided URL.

Heuristics 3

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
  • 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://shorten.so/F6ZbH?&wer32uy2udwwd23sr2888ds7f

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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