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

Static analysis result for SHA-256 d5a8990850d3b5d8…

MALICIOUS

Office (OLE) / .XLS

196.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 0ed7ebf45c4c599e91b5ebcd4c66caa7 SHA-1: bd9298d45194262dece5b35b7704795eb1385728 SHA-256: d5a8990850d3b5d87e37da09e2fb8ebae2c146d61dc7367f4d6923ffa9a32395
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 embedded URL 'http://gf.to/iLtPKFlsb' is highly suspicious and likely serves as the initial download source for a secondary payload. Although the VBA project itself contains no executable statements, the OLE vulnerability is the primary attack vector.

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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