Office (OLE) / .XLS malware analysis — malicious · aab21e8e67c22a5d

MALICIOUS

Office (OLE) / .XLS

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

MD5: 791df4927d1829dfdb5c65358d375512 SHA-1: ca3a67255f8847876624910023d80f183429d4f6 SHA-256: aab21e8e67c22a5da49530d57ce55f832824e5a24b140fb3c361515ab3bcbc18

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 load a remote payload. The heuristic explicitly identifies the CVE and extracts the URL used for the download. No VBA macros were found to be executable, but the core exploit mechanism is present. The file is therefore acting as a downloader for a secondary stage.

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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