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

Static analysis result for SHA-256 8bb96a945f94e977…

MALICIOUS

Office (OLE) / .XLSX

326.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 35fbfda104f09313080a80436b017dee SHA-1: e341e61547eca9e69a31c82985c8e1b53ac2a382 SHA-256: 8bb96a945f94e9779aa83b7ed429a1a98fbae7acbdaa4dc3678c7b12f2ff944b
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, which is a known vulnerability used to download and execute remote content. The extracted URL is highly suspicious and likely points to the secondary payload. Although the VBA project contains no executable statements, the OLE structure itself is indicative of exploitation.

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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