Office (OLE) / .XLS malware analysis — malicious · aefd748baab9a116

MALICIOUS

Office (OLE) / .XLS

1014.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: eafa3ce5c52be60e0efa5a31dc07b4e7 SHA-1: 1fdbda7907ddb7d02d6a0241864eb1df367090cb SHA-256: aefd748baab9a11614e4af32bb226765bd58595f7c63df345ea53e78877356cb

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE file that exploits CVE-2017-0199 via a URL moniker to download and execute a remote payload. The extracted URL is highly suspicious and indicative of a malicious download. Although VBA macros were present, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure.

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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