Office (OLE) / .XLS malware analysis — malicious · b52b3e8a01be7467

MALICIOUS

Office (OLE) / .XLS

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

MD5: 825940706a9d2ebc7d9d44e09ef7d41e SHA-1: 957ebfc7dccef51066d27af0266bf272f8319e6b SHA-256: b52b3e8a01be74679312c9c4916dab5da49890d9efec9a02f21d32db2b8a2e2b

68 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 a URL Moniker to act as a remote loader. The heuristic firing indicates it attempts to download a payload from the URL 'https://link.orai.io/rpAvAz?&ocean=tired&meteorology=auspicious&aglet'. No VBA macros were extracted, but the exploit itself is sufficient to classify the attack pattern.

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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