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

Static analysis result for SHA-256 17c3e189fc0e14fa…

MALICIOUS

Office (OLE) / .XLS

280.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: baabc8ce71d2770c3321f737f8e21ad0 SHA-1: eb7877f1e23fabcc066eafc27535f80e4c04cac0 SHA-256: 17c3e189fc0e14fad9807ec04d0a1a2ee9045baa84d499524f518b3027846836
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 https://urlty.co/AcBST. Although VBA macros are present, they do not contain executable statements, suggesting the exploit relies on the OLE vulnerability itself. The presence of the VBA project and the embedded URL strongly suggest a macro-enabled document designed to download and run a secondary payload.

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 https://urlty.co/AcBST

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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