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

Static analysis result for SHA-256 929fc48317154d60…

MALICIOUS

Office (OLE) / .XLSX

1.67 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d202e57a9d0809c36c13462333cde1eb SHA-1: e9241b73bc39612cfae8524948c8143e55dfdd07 SHA-256: 929fc48317154d60f0f42c54fd8756de6b33e43c0c56dc83885fe424f1c0e58e
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1059.001 PowerShell T1059.003 Windows Command Shell

The sample is an OLE file that exploits CVE-2017-0199 via a URL moniker to download and execute a remote payload from the URL 'https://salsita.link/yNaz1O?&grip=didactic&purple'. Although VBA macros were present, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure.

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.
    URL https://salsita.link/yNaz1O?&grip=didactic&purple
  • 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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