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

Static analysis result for SHA-256 5d0767dd6ec608d9…

MALICIOUS

Office (OLE) / .XLSX

273.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a24d4a6805dd178271802efb14e94031 SHA-1: bef7fd321933b3e754fd6ac444b4b9d08c8a9d3f SHA-256: 5d0767dd6ec608d907764c441ac596a6580258e84ae9413a2a42645f7a820d55
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample contains Excel 4.0 macros, indicated by the OLE_XLM_AUTOOPEN heuristic. It also uses a lure to trick the user into enabling macros, specifically impersonating a document signing service. The presence of the URL 'sssolutionsllc.org/k.php' suggests it is intended to download a second-stage payload.

Heuristics 3

  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context

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