Office (OLE) / .XLS malware analysis — malicious · d9dd1f0bb9043bea

MALICIOUS

Office (OLE) / .XLS

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

MD5: d6a2be61efa263a1e3fc37a8c9dd9383 SHA-1: 18bd5141b43287f61b093701955667d0dab0a087 SHA-256: d9dd1f0bb9043bea2bf406758bf7e9b25c6a669314e4c45642b234b1f126b8c7

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, which is designed to load remote content. The extracted URL, https://a8s.app/vt9zwj, is highly suspicious and likely serves as the initial download location for a secondary payload. Although VBA macros were present, they contained no executable statements, suggesting the exploit relies on the OLE 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.

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

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