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

Static analysis result for SHA-256 08669410e4fa368d…

MALICIOUS

Office (OLE) / .XLS

321.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c4eed748b432c0b3b6f95dd654725d0b SHA-1: ba4c6674793a16f44f36b6a1f3eea6203887a838 SHA-256: 08669410e4fa368d3aaa62e4bec816967dbde4cb2441b69f4b2e365be7443efa
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader from the URL http://gf.to/vwambNPxk. Although VBA macros were present, they contained no executable statements, suggesting the exploit relies solely on the CVE. The presence of the OLE2Link and URL Moniker stream further supports this attack vector.

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://gf.to/vwambNPxk

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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