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

Static analysis result for SHA-256 ff122d0b1b9edb86…

MALICIOUS

Office (OLE) / .XLSX

116.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-09-15
MD5: bc14fce2076243f399adc6d94a219e4d SHA-1: 52fd4fde60876eaf8dbde9279282fdc3601bdd0c SHA-256: ff122d0b1b9edb864a6dd92c345645234939318e7aa6f0992605443aa9da97af
70 Risk Score

Malware Insights

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

The critical heuristic firing indicates the sample exploits CVE-2017-0199 via an OLE2Link object to load a remote resource. The embedded URL 'https://come.to/sweetwhores' is likely the target of this exploit, serving as a loader for a second-stage payload. No VBA code was found to be executable, but the exploit itself is sufficient for initial compromise.

Heuristics 3

  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://come.to/sweetwhores

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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