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

Static analysis result for SHA-256 a72ce5f041cd20a2…

MALICIOUS

Office (OLE) / .XLS

1.33 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c9f83c1ee7391fede4e466645842c4ff SHA-1: 087263d047858dfecbe14131095d58e8e236c27a SHA-256: a72ce5f041cd20a2a32cff5a9b7784d6643ec3f9180df24d1bdcb22531e7da8b
70 Risk Score

Malware Insights

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

The sample is an Excel file that exploits CVE-2017-0199 via a URL moniker to download and execute a remote payload. The heuristic firing explicitly mentions the CVE and the extracted URL. No VBA macros were found to be executable, but the exploit itself is sufficient to indicate malicious intent.

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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