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

Static analysis result for SHA-256 17ad3766a7871f66…

MALICIOUS

Office (OLE) / .XLS

487.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-02
MD5: 9536a67821da6e8ca11b911b743ba3c6 SHA-1: fe36e2035527750a6582bd00e1e4474cc515030b SHA-256: 17ad3766a7871f6602690b0251c8eb8fad9466e99ffc4ead2cc926564063c770
70 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2017-0199 indicates the sample is designed to exploit this vulnerability, likely to download and execute a second-stage payload from the embedded URL. The VBA macros, while not containing executable statements directly, are present and could be used to facilitate the exploit. The embedded URL is the primary indicator of compromise.

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://OOOW3OOOOOOO233OOOOOO23OO33B2OB32O32O32B3O23BO33O3S0DFSDF0X000F0SD0000WLLL21LLLLL222LLLLL3333LELLL@192.3.101.121/d2.d2.d2.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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