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

Static analysis result for SHA-256 d157aef192c72d86…

MALICIOUS

Office (OLE) / .XLSX

231.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-04-03
MD5: 908e71bc84ee8e35b54f2fcc6abbe5a7 SHA-1: b50cf8490aa3c4523981619d69de876841666d5c SHA-256: d157aef192c72d86025c289e990b5a522acca01d294155ad68e5f03d496cec10
70 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, which attempts to load a remote document from the provided URL. The embedded URL points to a malicious document hosted on an IP address, suggesting a downloader or initial access vector. No VBA macros were found to be executable, but the exploit itself is the primary malicious functionality.

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://KKKKKK2K3K3K3K3K3K3K3KK3K3KADASDASDQWDASDASDASDAS3KK3K3K3K3KK3K34K4KK5KK5K5K5K5KK5L5K5FSD5LK5L5K5LK5L5K5DSFGRTRTFDGDFGDFEKLLASD3L4K4L4@192.210.175.102/MBNFDKETRE343FDGDFKF.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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