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

Static analysis result for SHA-256 9b30b124838429d8…

MALICIOUS

Office (OLE) / .XLS

86.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ea3f6513e7b51eb18654ce46e34c2cfb SHA-1: 5431cdc61d10e4d860fad1adf96fb421fd518ce7 SHA-256: 9b30b124838429d80dd4fdb00d932df0de42569bf26e4bb6fec25b847d24ce39
160 Risk Score

Malware Insights

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

The file is an Excel 4.0 macro-enabled spreadsheet. Heuristics indicate the presence of an Auto_Open macro, which is designed to execute automatically when the document is opened. The document body contains text that appears to be a lure, instructing the user to enable macros or editing. The XLM macro uses dangerous functions like RUN, suggesting it attempts to download and execute a payload from the provided URL.

Heuristics 5

  • 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.
  • XLM Auto_Open with dangerous formula APIs critical 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://pbdq26xjey02uprxwx.com/fera/frid.gif�

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
7c4e6e8611159b572e384e022cb7e9edbaa0a964189883c047d79a06d41903f6		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2390 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.