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

Static analysis result for SHA-256 9d62981b6586fed1…

MALICIOUS

Office (OLE) / .XLS

332.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ffadcf1a219004ca492aaa84e56e129f SHA-1: 30615450c8543a77fb351ef0e5e5535df882d1ff SHA-256: 9d62981b6586fed172f4efab8cbf6c4db587c741d14d055d3075466ac06a2bcc
100 Risk Score

Malware Insights

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

The file contains Excel 4.0 macros, specifically an Auto_Open macro that utilizes dangerous functions like RUN and ShellExecute. This indicates the macro is designed to execute arbitrary commands. The presence of an embedded URL suggests it's intended to download and execute a secondary payload, which is a common technique for malware delivery. The confidence is high due to the clear indicators of macro execution and external resource fetching.

Heuristics 4

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute 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.
  • 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://dtmh.gr/ds/231120.gif

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
56028e1aaff784c0ad7279a6790acbda557776a958b2dd9faa77c4f8894b8439		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 6064 bytes

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