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

Static analysis result for SHA-256 8693e209602fd284…

MALICIOUS

Office (OLE) / .XLSX

1.26 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 801eb84b2cb8ed11adbbb373967645a1 SHA-1: 2311963e566e4c1ddecc4541a5f864595ac91933 SHA-256: 8693e209602fd284ba246054ef1f880a79aeb9c6cb81e51e0b8aeb13572ae91c
76 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from a provided URL. The extracted URL, 'https://linkdenihjfjdshfjhdsjfhjhwuefhhcxvnvnsdbdyewudsfgjdhfjhsdfjhjsdhfjsdfjdshf.doC@bonato.digital/VShxAP', is the primary indicator of this malicious activity. The 'SE_INVOICE_LURE' heuristic suggests the document's content is likely a fake invoice or payment request to trick the user into opening the malicious file.

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.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators

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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