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

Static analysis result for SHA-256 886b705fb30831a8…

MALICIOUS

Office (OLE) / .XLS

489.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ed71cf3ff8f9252bf30d466947a40846 SHA-1: 74f85e81890e42996b3d74b2ed0932959b9b366b SHA-256: 886b705fb30831a882f210e2e4db24f44d7b9758e84afe480469a326709a75e0
68 Risk Score

Malware Insights

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

The sample is an OLE2Link file that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic explicitly identifies the exploit and provides a URL from which a secondary payload is likely downloaded. No VBA macros were found to be executable, but the presence of the CVE exploit is sufficient for a high confidence assessment.

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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