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

Static analysis result for SHA-256 01cf4143b8b3f34e…

MALICIOUS

Office (OLE) / .XLS

1.35 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: b606e8595d1d7602065646b3b674db93 SHA-1: 81926c3b6f05eb334a15d77492c3b9c6c5e7f7b6 SHA-256: 01cf4143b8b3f34e2bf80abedbc887379d79bb06bcaa53730d9c3d37e86efdba
70 Risk Score

Malware Insights

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

The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object. This vulnerability allows it to download and execute a remote loader from the URL 'https://link.saja.market/wSpd1PeHgD?&pinecone=idiotic&staircase=hesitant&height'. Although VBA macros are present, they contain no executable statements, indicating the exploit is likely delivered through the OLE object itself.

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://link.saja.market/wSpd1PeHgD?&pinecone=idiotic&staircase=hesitant&height

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
382fc1344a2f0cf6eda18645d41def8d571debc6637bc7fe02a5c83715a51bef		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2112 bytes

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