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

Static analysis result for SHA-256 2eb56d46618b75f2…

MALICIOUS

Office (OLE) / .XLS

104.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 062d8e8c3de4faeb07f686514dbb8f9d SHA-1: d9687a26cb9249bbc3380e763eb8bb98bd81dafa SHA-256: 2eb56d46618b75f2cd45197602d9c8e8c2fe63fd61fe25780d11f5e13a45959f
60 Risk Score

Malware Insights

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

The sample is an Excel 4.0 (XLM) macro sheet that uses a lure to trick the user into enabling macros, impersonating a document signing service. The document body contains multiple URLs that are likely used to download a second-stage payload. The presence of 'rundll32.exe DllRegisterServer' suggests an attempt to register a DLL, which is a common technique for malware execution.

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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