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

Static analysis result for SHA-256 83db792e162e7f53…

MALICIOUS

Office (OLE) / .XLS

726.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 1fc773eaa23269478cbd704c164a68a2 SHA-1: 7b46b9ae38d6d7f2e8b4b85270515ea79a452859 SHA-256: 83db792e162e7f5314dcde0054218e0bc475c596a0a62c1d95265f1457fc1589
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, which is designed to download and execute a remote payload from a provided URL. The extracted URL is used for this purpose. Although VBA macros were present, they contained no executable statements, suggesting the exploit is delivered through the OLE object itself rather than macro execution.

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

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