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

Static analysis result for SHA-256 9417ce41e70ec626…

MALICIOUS

Office (OLE) / .XLSX

1.38 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c86633d874f275a35a7feadc663bbcb1 SHA-1: cbaf694f18b4c2bd99037c008e9719a562b84f5e SHA-256: 9417ce41e70ec6264714ddf164c1bb1324bd0d3bdeec4e29f434f6bc64a4511a
128 Risk Score

Malware Insights

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

The sample exploits CVE-2017-0199, a known vulnerability in Microsoft Office's OLE object handling, to download and execute a remote payload. The embedded URL points to a malicious domain, indicating a likely attempt to deliver a second-stage malware. Additionally, CVE-2014-4114 is also flagged, suggesting the presence of an OLE package with an executable payload.

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.
    URL https://greatniceworkingskillwithbetterperformancegoodformebestfeelformetogive.AsiA@a38.fr/prL3Yn
  • CVE-2014-4114 — OLE Package with executable payload critical CVE likely CVE_2014_4114
    OLE Package CLSID found alongside executable file references — a strong CVE-2014-4114/Sandworm-style package-dropper indicator.
  • 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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