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

Static analysis result for SHA-256 7149c04284f3ba35…

MALICIOUS

Office (OLE) / .XLS

437.0 KB Created: 2010-04-08 05:35:51 Authoring application: Microsoft Excel
MD5: 48ee1d94c64af1851b94285af0417f45 SHA-1: ba5b6f7659fbc733bc5a277a42cd8d059610eb70 SHA-256: 7149c04284f3ba35b1ba7fd4ca89aa17d11411c9b97d2765d5d0fd7f9520cf45
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The sample is an Excel file containing VBA macros, specifically an Auto_Open macro. This macro attempts to copy itself as 'StartUp.xls' into the Excel startup directory, indicating a persistence mechanism. The ClamAV detection 'Doc.Macro.Laroux-5893719-0' further supports its malicious nature.

Heuristics 3

  • ClamAV: Doc.Macro.Laroux-5893719-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.Laroux-5893719-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
8ae407b77d3ab3eb717bfe0b161fa3eeabde4452382b03f73e2762b02954acda		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 151439 bytes

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