Office (OLE) / .XLS malware analysis — malicious · c38f7442f831322e

MALICIOUS

Office (OLE) / .XLS

1002.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: c2042215ba92d5637b19f878e12c81b5 SHA-1: 48e84d97ff198a4d1f0be00e8f3dd18b5580052d SHA-256: c38f7442f831322e52cb390c1ad95424e65d7520355524ef59a8565d23e871e7

68 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. This vulnerability is used to load a remote resource from the provided URL. The VBA project contains no executable statements, suggesting the malicious functionality is entirely driven by the OLE object and the embedded URL. The extracted URL is highly suspicious and likely serves as the distribution point for a second-stage payload.

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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