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

Static analysis result for SHA-256 9eb3ac05340da70c…

MALICIOUS

Office (OLE) / .XLSX

1.29 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 777464f57cb83a39b7324d1f7505b6d6 SHA-1: 25acb95ef77574c20002165e6b68526d7318acd1 SHA-256: 9eb3ac05340da70c56dc36e8beece9a7c052c945fc3ceade2c622c4defec54b3
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell

The critical heuristic firing indicates exploitation of CVE-2017-0199 via a URL moniker, which is designed to download and execute a remote payload. The embedded URL is the primary indicator of the malicious payload's source. No VBA macros were found to contain executable statements, suggesting the exploit relies solely on the OLE vulnerability.

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.
    URL https://test.mycon.link/wXvDnB?&ziggurat=picayune&associate=straight&fixture
  • 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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