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

Static analysis result for SHA-256 f8d2e37f417c118b…

MALICIOUS

Office (OLE) / .XLSX

848.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 6bd8ebe5ff88cafa6165bcd1b1864c18 SHA-1: 800e8abe150c4307e128c0fddcd80d3ff5a16d9b SHA-256: f8d2e37f417c118b25528f4badb3b826db8841aa83670cf360f3e45026384077
70 Risk Score

Malware Insights

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

The critical heuristic firing indicates the exploitation of CVE-2017-0199, which is a known vulnerability used to download and execute remote content. The extracted URL is highly suspicious and likely serves as the source for the secondary payload. No VBA macros were found to be executable, but the presence of the exploit and the URL strongly suggest a malicious intent to compromise the user's system.

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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