Office (OLE) / .XLSX malware analysis — malicious · 2f702fb47e606432

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 12b1be495f068edad506a42702d7e706 SHA-1: 6f0560548660796c18ff4e70225ca7e22bd31d15 SHA-256: 2f702fb47e6064329a440249b493f388bf7bed6dea86dceb5df4dffd174c1f43

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute remote content. The extracted URL, https://crash.sh/pFGv5f, is highly suspicious and likely serves as the distribution point for the secondary payload. Although VBA macros were present, they contained no executable statements, suggesting the exploit is purely based on the OLE vulnerability.

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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