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

Static analysis result for SHA-256 7ae426053484d383…

MALICIOUS

Office (OLE) / .XLSX

327.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2024-08-12
MD5: f991ad153bd189ebd79d4372332ee4a4 SHA-1: d9ff7aba00434ff35ebad628fdb8c07a58512e37 SHA-256: 7ae426053484d383d48daf69f8372cbfe528cc7e0afcfc114a5ee43ab900bdac
70 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 attempts to load a remote resource from the URL https://exi.link/iDEKed. Although no VBA code was found to be executable, the presence of the OLE object and the embedded URL strongly suggests a remote code execution attempt to download and run a secondary payload. The file's structure and the exploit targeted point to a downloader or initial access mechanism.

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://exi.link/iDEKed

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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