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

Static analysis result for SHA-256 bb4d9a931c6dbccd…

MALICIOUS

Office (OLE) / .XLS

367.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a9185aa1a69e13ec2505fa8bbeb5a79c SHA-1: 706fd266db7061d160e95d13df1d07c99719945b SHA-256: bb4d9a931c6dbccd00ddc303be3404e565c2a197ff93132982b70db757c695d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Service Execution: Visual Basic T1204.002 Malicious File: Malicious Code

The file is an Excel 4.0 macro-enabled spreadsheet. It contains an Auto_Open macro that is designed to execute when the workbook is opened. The macro likely attempts to download and execute a second-stage payload from one of the two embedded URLs, stateoftheartacademy.com.br or dsafarm.com. The document body also contains text that appears to be part of the macro's logic, including references to DLLs and URLs.

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://stateoftheartacademy.com.br/E4V8njAb2/ue.html
    • https://dsafarm.com/h03itpGP/ue.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
e808156aa76369abc653ef5da0e4637a11444d74c8ce4e627b8f3942d60b3178
xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8209 bytes