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

Static analysis result for SHA-256 be84ff071906f595…

MALICIOUS

Office (OLE) / .XLS

367.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 8ef992ac00c2e9ec59c68d3962f1507d SHA-1: d333340a56f823ce8247fd3d664ffbb72afddc4c SHA-256: be84ff071906f59547d969400a2b1fe78ed87cef8db306e1683fef779ef60cae
102 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 critical OLE_XLM_AUTOOPEN heuristic indicates the presence of Excel 4.0 macros designed to execute automatically upon opening the document. The SE_ENABLE_LURE heuristic confirms the document prompts the user to enable macros. The extracted DOC BODY content and script fragments reveal the macros attempt to download a payload from the URLs https://smartpalakatva.com/edQsUZOLlE/th.html and https://pilstlcommodities.com/Ov4FlB3lpy/th.html. The reconstructed strings 'R', 'LM', 'JJC', 'CBB', 'on', 'oadT', 'wnl', 'LDo', 'File', 'o', 'Dl', 'ht', 'tps://', 'smartpalakatva.com/e', 'dQsUZOLlE/th.html', 'ht', 'tps://', 'pilstlcommodities.c', 'om/Ov4FlB3lpy/th.html' are part of the macro commands to achieve this.

Heuristics 4

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • 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 https://smartpalakatva.com/edQsUZOLlE/th.html
    • https://pilstlcommodities.com/Ov4FlB3lpy/th.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
e61304013e31eadd8bf35fc5d3e6cbadd61463966f2a2d09ae24f65eb0ee3106		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8349 bytes

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