Office (OLE) / .XLS malware analysis — malicious · f1a941cbfb632639

MALICIOUS

Office (OLE) / .XLS

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

MD5: 2e3c8024c583f53722273853d4648c3c SHA-1: 0e3251629a8c3d9a53ce9d689232c700a9adef66 SHA-256: f1a941cbfb63263925133b88339c109c220d14589811c026bc511f718a1049ae

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE2Link file that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic explicitly identifies the exploit and extracts a URL used for the remote loader. Although no VBA macros were found to be executable, the presence of the CVE-2017-0199 exploit indicates a malicious intent to download and execute a second-stage payload from the provided URL.

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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