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

Static analysis result for SHA-256 ae99e5fea931ceed…

MALICIOUS

Office (OLE) / .XLS

234.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 456ff43e8b42a2043afc83c4474872d5 SHA-1: a18cb477550dc4eda2e5f0d22b2ffb5a71dbeb13 SHA-256: ae99e5fea931ceed4641e248fc8f06fb314d4c12111b92871e6bf45c69d93188
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 load remote content. The extracted URL is the primary indicator of the malicious payload's origin. Although VBA macros were present, they contained no executable statements, suggesting the exploit relies solely on the OLE vulnerability.

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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