Office (OLE) / .XLS malware analysis — malicious · 48b16bfcd485b7cd

MALICIOUS

Office (OLE) / .XLS

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

MD5: 0413ed8edb3a6d032bd758ec2347e69d SHA-1: aec1135a9de359e1097f94b46212eb2ee4bd5bba SHA-256: 48b16bfcd485b7cd4789afe707009bf64d7f8c610ed3ca66a08b2ff96a41ed24

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.005 Service Execution: Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote loader from the provided URL. Although no VBA macros were found to be executable, the presence of the OLE vulnerability strongly suggests a malicious intent to compromise the user's system via a remote download. The file is an Excel spreadsheet, a common delivery vector for such exploits.

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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