Office (OLE) / .XLS malware analysis — malicious · 544e3a275c258b90

MALICIOUS

Office (OLE) / .XLS

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

MD5: f8136a20dbec93a03aaebaf7d36ff199 SHA-1: be5e9c920b7e3c61b0b7779c6de6bc28d9aab2d3 SHA-256: 544e3a275c258b90d8cda8be36b057e75451b4901d4663082db9f97419cd5a4a

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample leverages the CVE-2017-0199 vulnerability, which is a known method for remote code execution. The heuristic explicitly points to an OLE2Link/URL Moniker exploit targeting this CVE, attempting to load a remote resource from the provided URL. No VBA macros were found to be executable, but the exploit itself is sufficient to download and execute a secondary 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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