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

Static analysis result for SHA-256 273b07aab060e917…

MALICIOUS

Office (OLE) / .XLSX

1.09 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4e241f2abea73c0c23a19197dca3074c SHA-1: b27e0a726048d965dca37556d90fb793e0ae1129 SHA-256: 273b07aab060e9172d43faa28021f3cb7d096d66ab84e96f2a3557027d0ef0aa
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE file that exploits CVE-2017-0199 via a URL Moniker to load a remote resource. The heuristic explicitly identifies the vulnerability and the embedded URL. No VBA macros were found to be executable, but the core exploit mechanism is clear. The file is likely a downloader for a second-stage payload.

Heuristics 2

  • 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.

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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