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

Static analysis result for SHA-256 29929fadc5b1f2cd…

MALICIOUS

Office (OLE) / .XLS

787.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 5b1fa04f7884f9ce20ca1f7fed464c3f SHA-1: a5068c6eb9f978a527c64dcc3bfc65733ac0225b SHA-256: 29929fadc5b1f2cdbb3dd48545d1d2582f382961e6f0f1f8d6d3d61d0cfec5c0
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 download a remote payload from the specified URL. Although the VBA project contains no executable statements, the critical heuristic firing indicates the exploit is present and likely functional. 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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