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

Static analysis result for SHA-256 199728ed3a5dcc31…

MALICIOUS

Office (OLE) / .XLS

104.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-21
MD5: b5cb1485653e39d9e5c87e796858c592 SHA-1: 1dae3f07c429ef28b45fe34635fed96bef8cbd68 SHA-256: 199728ed3a5dcc31d6d5fc9214f61d72abdff1590e54a3fa24673d3a45e6cd0f
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 download a remote payload from the provided URL. The VBA project contains no executable statements, suggesting the exploit is directly triggered by the OLE object rather than macro execution. The embedded URL is the primary indicator of the remote resource being fetched.

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://OASOSIDFOSWEROEROOWRWERWEREWWW0W83W338W83WOIEORIOWEIROWI3339W99ER8WE9R923R29849284WERWERWE9RW93949498WWOEIROWEOR23489W@202.55.133.72/32..............32...............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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