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

Static analysis result for SHA-256 e822eabb8cd2fdd4…

MALICIOUS

Office (OLE) / .XLSX

1.24 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 728def92ce2cf1e59208b5747c4f29e8 SHA-1: b4a65a2275e8b1dbb37bb1ad7949f6f456da1773 SHA-256: e822eabb8cd2fdd493bda865b2deebc1d4e272da9f1b17b8729de2289a31da3e
70 Risk Score

Malware Insights

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

The sample is identified as malicious due to the critical heuristic firing for CVE-2017-0199, which indicates the exploitation of a remote code execution vulnerability. This vulnerability is used to download a secondary payload from the URL 'https://t.emobility.energy/3yRDYq?&balance=tested&cleaner'. Although VBA macros are present, they do not contain executable statements, suggesting the exploit relies on the OLE object's vulnerability rather than macro execution.

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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