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

Static analysis result for SHA-256 1bd2996f9275fff6…

MALICIOUS

Office (OLE) / .XLS

611.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-06
MD5: a1e37efb000c5b8c8fcaddf0999aae3c SHA-1: 3dfc70f5f437da052e758bbe9ab6db4ef3a03db7 SHA-256: 1bd2996f9275fff65c3646a8d7615b678246cdfa0470b48b663f9fce308da11d
70 Risk Score

Malware Insights

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

The file is an Excel spreadsheet that exploits CVE-2017-0199 via an OLE2Link object to download a secondary payload from the provided URL. The VBA macro section, while present, contains no executable statements, indicating the exploit relies solely on the OLE object. The embedded URL is the primary indicator of the malicious download source.

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://WWWEEEEERWEEWWWE0E090W0DDF0F9S0WEWRWQQQ09EW0QQQQQQQQQQQ09W9WEREWRRRRRRRR090R00R2333RERERZZZZ090ZXXX0XXXXXX00XX@188.93.233.26/c...........................c.......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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