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

Static analysis result for SHA-256 3ed5fe15f2a5eac7…

MALICIOUS

Office (OLE) / .XLSX

473.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: aeedcd34ee18fb7a25c1adabdf8dce4e SHA-1: f6740e10896873bda0d2761a15970a67d2557be3 SHA-256: 3ed5fe15f2a5eac7289b0e7d663e38a7e07e56ee722c85a6be95924a54298f4e
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 Service Execution: Visual Basic T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The file contains a critical heuristic indicating exploitation of CVE-2017-0199 via an OLE2Link object. This object attempts to download a payload from the URL 'https://getabre.com/W4B4T3'. Although the VBA macros themselves do not contain executable statements, the presence of the OLE2Link exploit is sufficient to indicate malicious intent.

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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