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

Static analysis result for SHA-256 ad74b40c64a6d3d0…

MALICIOUS

Office (OLE) / .XLSX

1.33 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a5ea2af2a93c7923e01fb90e85ad16ef SHA-1: fa8cf386d4b577bc3ef72a7f9ed001ead9fd19e7 SHA-256: ad74b40c64a6d3d090f71242f8bd240716e13a98bb1fb0d634e45b8fe217d473
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic T1190 Exploit Public-Facing Application

The sample exploits CVE-2017-0199, a known vulnerability in Microsoft Office that allows for remote code execution via specially crafted OLE objects. The heuristic firings indicate the presence of a URL moniker pointing to a remote loader. This suggests the file is designed to download and execute a second-stage payload from the specified URL, which is a common technique for initial access and further system compromise.

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.
    URL https://greatattitudewithbestfeatureswhichgivenmebestfeelingevermadewithme.busines@wedew.link/EdkcgI
  • CVE-2014-4114 — OLE Package with executable payload critical CVE likely CVE_2014_4114
    OLE Package CLSID found alongside executable file references — a strong CVE-2014-4114/Sandworm-style package-dropper indicator.
  • 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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