Office (OLE) / .XLSX malware analysis — malicious · 3c54060447cd33a5

MALICIOUS

Office (OLE) / .XLSX

1.09 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: b48eee62892d883cdd90763a188119ca SHA-1: 291d7a37c3a6c4f6495480874523a50f4f9f4b93 SHA-256: 3c54060447cd33a5aa4ce88e0dceec813b5c1917653c414aa101b7e4df321f28

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample exploits CVE-2017-0199 via an OLE2Link object, which is a known technique for remote code execution. The embedded URL is used to download and execute a second-stage payload. No VBA macros were found to be executable, but the exploit itself is sufficient for malicious 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.

Filename	Kind	Source	Size
`macros.bas` `7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1206 bytes

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