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

Static analysis result for SHA-256 e7aafdb3195a527d…

MALICIOUS

Office (OLE) / .XLSX

556.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 09fabf36d418f9655bd7b1de3d8b1c8d SHA-1: 4a3128cb22df4d4c9491f5e84c7c26f3170470f3 SHA-256: e7aafdb3195a527df58916ca4e96aa9fed171c4f66fa9ff1d2ac35394ddb786b
68 Risk Score

Malware Insights

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

The sample exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic firing indicates that the exploit attempts to load a remote resource from the URL 'https://tofe.cc/XMentU'. Although the VBA project contains no executable statements, the presence of the CVE exploit and the external URL strongly suggest a malicious intent to download and execute a second-stage payload.

Heuristics 2

  • 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.

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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