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

Static analysis result for SHA-256 9ce79d80d6bb7a41…

MALICIOUS

Office (OLE) / .XLS

129.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-10-18
MD5: feee1fbd6bb55144e0a9066e67001a8f SHA-1: 3cb7a9cdeadf5a92c9f0f65caa1945da46de5c48 SHA-256: 9ce79d80d6bb7a413c1b6a678b2d095983c49f800407f5a576582dace86fd3d2
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 is designed to download and execute a remote payload. The embedded URL, http://45.88.3.46/windows/1/HTMLCachess.dOC, is the source of this payload. Although the VBA project itself contains no executable statements, the OLE structure facilitates the exploit.

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://45.88.3.46/windows/1/HTMLCachess.dOC

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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