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

Static analysis result for SHA-256 54af1ef5288ccb06…

MALICIOUS

Office (OLE) / .XLSX

1.57 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d37413dc019db2c0c2a80f79e4cdda0b SHA-1: 33b4e61fdc25fc49c08ed6f9afc9588defd6c79c SHA-256: 54af1ef5288ccb065b46b01ded28e3f082000a17019e0607ad79de3dc6b585d6
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1566.002 Phishing: Spearphishing Attachment T1071.001 Web Protocols: Web Protocols T1105 Ingress Tool Transfer

The critical heuristic firing for CVE-2017-0199 indicates the sample is designed to exploit a vulnerability in OLE2Link and URL Moniker to load remote content. The extracted URL, https://verygoodvisionwithbetterpeoplesonthismagaicalworldwhoreallyneedbesttech.businss@wedew.link/dtvruP, is the likely source of the second-stage payload. Heap spray and NOP sled heuristics suggest the exploitation technique involves memory manipulation.

Heuristics 4

  • 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://verygoodvisionwithbetterpeoplesonthismagaicalworldwhoreallyneedbesttech.businss@wedew.link/dtvruP
  • Heap-spray pattern detected high SC_HEAP_SPRAY
    Repeated 0x07 bytes found
  • NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED
    Long run of 0x43 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

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