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

Static analysis result for SHA-256 8fa7ccb3ac4a4776…

MALICIOUS

Office (OLE) / .XLSX

1.17 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 9faa84d4eea2b3cfc40c078085a1714a SHA-1: c61abcefa1ef6495606415bd656c3cbe320b67e5 SHA-256: 8fa7ccb3ac4a4776582817c6f5db391c315e6cb053b7cadd87822b91f54c8dcf
68 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object. This technique is used to download and execute a remote payload from the provided URL. The VBA macro, while not containing executable statements itself, is part of the exploit chain. The extracted URL is highly suspicious and likely hosts the secondary payload.

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

Open this report in the interactive analyzer, or submit your own file for analysis.