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

Static analysis result for SHA-256 199800601fec7229…

MALICIOUS

Office (OLE) / .XLS

1.17 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: cd018316a0448e366ad8218608a011f2 SHA-1: 83f497eb0d0c53dcf93363deb8bf5c75067fce80 SHA-256: 199800601fec72296e4cbc4bb9500757538517a0485c562c562604099534df93
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, a known vulnerability for remote code execution. The heuristic indicates it attempts to load a remote resource from the provided URL. Although the VBA code itself is minimal and does not contain malicious logic, the presence of the CVE exploit and the embedded URL strongly suggest the file's purpose is to download and execute a second-stage 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://seetheebstactingskkillwithintimefojourneywihcihbgtharea.business@short.udon-morishige.com/DPpXKF

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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