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

Static analysis result for SHA-256 a14376f75bfefd75…

MALICIOUS

Office (OLE) / .XLS

47.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 9c339a1bbd52b627b8f9aff08a1dd583 SHA-1: b8e109321e3ba3f416f1528c03fe41448eafb29a SHA-256: a14376f75bfefd75adb02b4d00c328d6deb31d9cb9a8bff1d8bf76480ec725b7
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1204.002 Malicious File T1059.001 PowerShell T1105 Ingress Tool Transfer

The presence of an Excel 4.0 (XLM) macro sheet with an Auto_Open function indicates malicious intent. The macro uses the URLDownloadToFile API to download a payload from the provided URL, and the document body contains a lure to enable macros. The XLM macro is likely responsible for the initial download and execution of a second-stage payload.

Heuristics 5

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://officialhydromaxpump.pk/gbmmnwqbifs/�
    • http://officialhydromaxpump.pk/gbmmnwqbifs/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
b9c43729ed3e5f60ceb7e1b9e49a555b973cf19e1ff5cba21e82e8451badee9a		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 3144 bytes

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