Office (OLE) / .XLS malware analysis — malicious · bc2c457b23993b20

MALICIOUS

Office (OLE) / .XLS

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

MD5: 2b1f0106a61ea058f70b5a29437ac4d5 SHA-1: 35b3276b2856afc144a355901d190155889c7320 SHA-256: bc2c457b23993b20d9ed57a13cfc4799e4263f5e326946e752720d964a93a3a2

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 attempts to load a remote resource from the provided URL. The VBA project contains no executable statements, suggesting the exploit is delivered through the OLE object itself rather than macro code. The extracted URL is the primary indicator of compromise, likely serving as a loader for a second-stage 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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