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

Static analysis result for SHA-256 aa6c9c748a383b7a…

MALICIOUS

Office (OLE) / .XLSX

1.69 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 18a316d9cffba9dac6b720740300db53 SHA-1: 400d264a50331638999480121dd36f1eb515cc0f SHA-256: aa6c9c748a383b7a2b380722c2876c81fe4c74b71585d91244f9afbc683f1f06
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1059.001 PowerShell T1059.003 Windows Command Shell T1059.004 Python

The sample exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic indicates it uses a URL moniker to fetch a payload from the domain 'greatthingsreturnwithbestthingsgoodforentirefeatureswithbestsolutionsfornew.business'. This suggests a downloader or initial access mechanism for a secondary stage. No VBA macros were found to be executable, but the exploit itself is sufficient for malicious 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.
    URL https://greatthingsreturnwithbestthingsgoodforentirefeatureswithbestsolutionsfornew.business@smollq.cc/tDRsUG
  • 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