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

Static analysis result for SHA-256 53ea33778a787e51…

MALICIOUS

Office (OLE) / .XLS

1.43 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 86a1756d5c9870ba6c6a1525b795ae12 SHA-1: fc66932a8ad3c766bb8409dccde45e9605ec611b SHA-256: 53ea33778a787e51e7290be1a54c1c97b9496fb7b9f82e416da6db4b97fcf37f
88 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing for CVE-2017-0199 indicates that the OLE file is designed to exploit a vulnerability in Microsoft Office to load remote content. The embedded URL, 'https://wearepowerfulthingsweneedbestnetworkwithbetterwaysbunendardthis.biz@wedew.link/z9TTSg', is highly suspicious and likely serves as the source for a second-stage payload. While VBA macros were present, they contained no executable statements, suggesting the exploit relies solely on the OLE vulnerability.

Heuristics 3

  • 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://wearepowerfulthingsweneedbestnetworkwithbetterwaysbunendardthis.biz@wedew.link/z9TTSg
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x61 bytes
  • 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