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

Static analysis result for SHA-256 b2421bfec0e62b0d…

MALICIOUS

Office (OLE) / .XLSX

1.16 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d3605b49e308ddaa1f9298bc1c4b6a4e SHA-1: 9f308c03d06b0ec5df88c38a6b09c09fcd466439 SHA-256: b2421bfec0e62b0d2f9ff7e7f7c61f4079a19c8032c5bcba4fc83e4aa2c89941
68 Risk Score

Malware Insights

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

The sample exploits CVE-2017-0199, a known vulnerability in Microsoft Office, to download and execute a remote document from the URL 'https://goodnewcomingsoonforgreatthignstohappenedsoonbetterperformance.doc@l1k.ir/WaWMyX'. Although VBA macros were extracted, they contained no executable statements, suggesting the primary malicious functionality relies on the OLE vulnerability.

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://goodnewcomingsoonforgreatthignstohappenedsoonbetterperformance.doc@l1k.ir/WaWMyX
  • 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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