Malicious Office (OLE) / .XLSX — malware analysis report

Static analysis result for SHA-256 3b9e1fa04ee9b436…

MALICIOUS

Office (OLE) / .XLSX

1.57 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c2184ad12916d4b2c591f46e459a43ef SHA-1: 7c8c6cbc0a363a7c8c0c3c89a99c302195f00ac4 SHA-256: 3b9e1fa04ee9b4367a1e2f4e9a4f8ccc1453748bfb1b783349c19697a72a3a66
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1218.011 Signed Binary Proxy Execution: Rundll32

The sample is an OLE file that exploits CVE-2017-0199, a known vulnerability for remote code execution. The exploit leverages a URL moniker to download a secondary payload from the domain 'wekissdbestpoplesaroundtheconrnerwithbestpeopleswhogivenbestthingswithme.biz@bersatu.me'. The VBA macros themselves do not contain executable statements, indicating the primary malicious functionality is delivered via 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.
    URL https://wekissdbestpoplesaroundtheconrnerwithbestpeopleswhogivenbestthingswithme.biz@bersatu.me/7kfkG8
  • 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.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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