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

Static analysis result for SHA-256 88b92014213c8a86…

MALICIOUS

Office (OLE) / .XLS

693.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-01-23
MD5: 7cea39e33b9bc39104863ef4745472bc SHA-1: 9e54dac8d89bc6b4c13f458e1035fe56622896a0 SHA-256: 88b92014213c8a867ecf1a18c415d62c06a547f7b522583379e68b603127af5f
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The file is an OLE document that exploits CVE-2017-0199 via a URL moniker to fetch and execute a remote document. The embedded VBA macros, while not containing executable statements directly, are part of the exploit mechanism. The primary IOC is the URL used for the secondary payload download.

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://13.38.70.27/business/document_23.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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