Office (OLE) / .XLS malware analysis — malicious · 4845c38c745540ae

MALICIOUS

Office (OLE) / .XLS

613.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-06

MD5: c339c06b207148996208bf283a98abb2 SHA-1: ef894d814f8858aeae2b5189a60de2fedf847afb SHA-256: 4845c38c745540aea9510da642c4719e6f3e0523341c4e37488103e7229811c4

70 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object to download a secondary payload from the provided URL. The VBA macros are present but do not contain executable statements, indicating the exploit is likely embedded within the OLE structure itself. The embedded URL is the primary indicator of compromise.

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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://WQWWWWWWZXCCCVVVVGGGFFGGGD09DGDFGFD808080SDFSD0FDF08823334280SD0FSDF8CXF8SDF0XCCXD80WE8R78435SDFUYDFUY@45.72.78.6/pr1.pr1.pr1.doc

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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