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

Static analysis result for SHA-256 7113398b5e274837…

MALICIOUS

Office (OLE) / .XLS

126.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 4658146f947ea498baaf9cf542ad0fc5 SHA-1: 7e5ff8360eba1e466a301e0e562574ae333f7a89 SHA-256: 7113398b5e27483757f79c346d4357014e972bb103d0fc8cc03ab2641d51eb8d
222 Risk Score

Malware Insights

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

The presence of critical heuristics for URLDownloadToFile API and VBA macros, including Auto_Open and Auto_Close, indicates a malicious downloader. The Auto_Open macro likely initiates the download of a second-stage payload from one of the embedded URLs. The ClamAV detection further confirms its malicious nature.

Heuristics 6

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://190.14.37.178/
    • http://185.183.96.67/
    • http://185.250.148.213/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2ad1c1f87f2f014cbe63ca2d48e08b26c2e70089c21e82116f929d26c50b2d3f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3654 bytes

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