Office (OLE) / .XLS malware analysis — malicious · bbfa2653ffb91812

MALICIOUS

Office (OLE) / .XLS

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

MD5: 560b9bdb75835822ed9f84d46521fd38 SHA-1: e68f1783002016aabecfd74ef333b90be19262ac SHA-256: bbfa2653ffb918121ecb6457991267689d3802e2afcbba498f0e3ef0e6740a96

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 is designed to download and execute remote content. The extracted URL, https://kutt.uk/5KXEqB, is the likely source of this payload. Although VBA macros were present, they contained no executable statements, suggesting the exploit is delivered through the OLE object itself rather than macro execution.

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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