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

Static analysis result for SHA-256 477842ca638727d9…

MALICIOUS

Office (OLE) / .XLS

300.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d9a25c9909bc237a7c994feca9949340 SHA-1: a2c44e1c0b5ec7165d8db78a256a339585d03c41 SHA-256: 477842ca638727d9f334779f3eecf67c54cfb051a0cd57345a02e60a921e6ff6
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 loader from the specified URL. Although the VBA project contains no executable statements, the OLE vulnerability itself is sufficient for initial compromise. The file is an Excel spreadsheet, suggesting it was delivered as a lure.

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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