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

Static analysis result for SHA-256 3457363ce7ce47aa…

MALICIOUS

Office (OLE) / .XLS

1.71 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4795429f679b38dee8383436e005fc2a SHA-1: deb9c84b48ba95c4a6cb3c9a02bd683fa4ba5f1b SHA-256: 3457363ce7ce47aa77588c3061ed63bc2d48d380e593776d9d3ac04c9b2aa39d
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is a known vulnerability used to download and execute remote payloads. The embedded URL points to a suspicious domain, likely serving as the initial stage for the payload delivery. No VBA macros were found to be executable, suggesting the exploit relies solely on the OLE vulnerability.

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://happinesswithgreatnesswithgoodnewsfornicetreamsformebetterwithgood.business@short.udon-morishige.com/ZfZeqj

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