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

Static analysis result for SHA-256 2ad9141655681eda…

MALICIOUS

Office (OLE) / .XLSX

147.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-10-25
MD5: 28c8015d7b3bd3281c20ca0701ecfc91 SHA-1: b4de7c1a2111c419ec43b107a34a170a65d3eada SHA-256: 2ad9141655681edabcb4fcb60014796760adf7d9739708c4ddc0919d00ad1e49
70 Risk Score

Malware Insights

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

The critical heuristic firing for CVE_2017_0199 indicates the exploitation of a known vulnerability to load a remote resource. The embedded URL, http://69.164.204.29/7090/hmn/HTMLIEBrowserhistory.dOC, is likely the source of the secondary payload. Although the VBA macros themselves do not contain executable statements, the OLE structure is designed to leverage the CVE for remote code execution.

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 http://69.164.204.29/7090/hmn/HTMLIEBrowserhistory.dOC

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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