Office (OLE) / .XLS malware analysis — malicious · f5d13dbdcbebbd7e

MALICIOUS

Office (OLE) / .XLS

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

MD5: 6c7b316a9bed72e3c3b286ee3713ee5b SHA-1: 66fde061502d60c471d45d58046d4af724041c18 SHA-256: f5d13dbdcbebbd7e06acce2bd2f5fc1b257c1f8dcd739d4a855386172875ec8c

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE2Link file that exploits CVE-2017-0199 to download a remote payload from the URL 'https://kryx.ru/Qz54T2?&nonbeliever=slimy&bun=nutty&plane'. Although the VBA project itself contains no executable statements, the OLE structure indicates a remote loading mechanism. The file is identified as malicious with a high risk score.

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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