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

Static analysis result for SHA-256 1053eb060ea2f29c…

MALICIOUS

Office (OLE) / .XLSX

1.06 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 1e86b9dc9b23a1f852bbb6f6b9aa1ef8 SHA-1: 8109a45f88d03f6312cb56aff1524f89e2324253 SHA-256: 1053eb060ea2f29ce976a1f709232ed548998e67c4d6c99329e8d0e247c544b0
70 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader from the URL https://url.terryspace.io/n7W5SM. Although VBA macros were present, they did not contain executable statements, suggesting the exploit is leveraged directly. The presence of the OLE2Link and URL Moniker components further supports this attack vector.

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://url.terryspace.io/n7W5SM

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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