Office (OLE) / .XLSX malware analysis — malicious · b8fdd158f41abbd9

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 476e05dbccfd74ce2aa888a42d0438e8 SHA-1: 6e763cf9a6825c5ce3224a4630625659bad08b51 SHA-256: b8fdd158f41abbd97902857a684a23003d32ebe27ba601d83e0778ee1bdd2ea9

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to load remote content. The embedded URL, https://qrisni.me/L44VBp?&waterspout=toothsome&washbasin=berserk&beer=unable&attorney=magical&friction=reminiscent&stumbling=needless&vertigo, is highly suspicious and likely serves as the initial download source for a secondary payload. Although the VBA project itself contains no executable statements, the OLE object's functionality is sufficient to initiate a malicious chain.

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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