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

Static analysis result for SHA-256 b0b635931c493ebd…

MALICIOUS

Office (OLE) / .XLSX

1.43 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d21f72b0aee8cededf74f49721ab531e SHA-1: 40a44d14ac23e08007c71679816106a0db9d4ab9 SHA-256: b0b635931c493ebdd8cf2f18e74ff48cfdf3611c0deca47938eda09eacd4402b
88 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote payload from the provided URL. The URL is embedded within the OLE stream, suggesting a direct download and execution chain. No VBA macros were found to be executable, but the exploit itself is sufficient for initial compromise.

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://uneedmybestpersonalitywhichgiveugoodthingswithbetterwaysneedformt.business@link.scogo.in/evqKV8
  • 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

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