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

Static analysis result for SHA-256 4b80be70c8ef65d6…

MALICIOUS

Office (OLE) / .XLSX

405.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: bb3b9972a34b3e30366629d827d76f7e SHA-1: 63eca7aa5994f249d55493691e5cfb77bf163ec7 SHA-256: 4b80be70c8ef65d61b6add311affea935832db5112ef386568e3e0ca1108356d
68 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 via an OLE2Link object, which is designed to download and execute a remote payload from the provided URL. Although no VBA macros were found to contain executable statements, the presence of the OLE2Link object and the associated URL strongly suggest a remote code execution and download attempt.

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