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

Static analysis result for SHA-256 9081b3aee1ca04fb…

MALICIOUS

Office (OLE) / .XLS

323.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ac4c88799c27763b12efe70606fa5ea7 SHA-1: 4bea15672272d9ce0102dc13da2cb335766539c3 SHA-256: 9081b3aee1ca04fb2fd832c6a98a8d3cc8e4411b0bf84810bf5b54b7190b3702
68 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the specified URL. Although the VBA project contains no executable statements, the OLE structure itself is the vector for exploitation. The extracted URL is the primary indicator of compromise.

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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