Office (OLE) / .XLS malware analysis — malicious · a448187a4238c392

MALICIOUS

Office (OLE) / .XLS

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

MD5: 83624f2a6f08d8f34c477f00542fc222 SHA-1: 1874c7f39450a9c22bb34def0ae67c694d9fcef8 SHA-256: a448187a4238c392898c127d4d2dd9a9150ef060275a510d51183b31182e7dee

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE2Link object that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic explicitly identifies the exploit and the URL used to download the secondary payload. No VBA macros were found to be executable, but the presence of the exploit and the external URL strongly indicate a downloader functionality.

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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