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

Static analysis result for SHA-256 be0aa1d175665670…

MALICIOUS

Office (OLE) / .XLS

1.39 MB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: ceae820d158894e5da1a79e9e2ee5152 SHA-1: 193811ad9c4fc5bf9b4f02969346ebe626758f08 SHA-256: be0aa1d175665670460bc68ecd25ed629f47ba3ee0490faebda403692939bf2c
188 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is a malicious Microsoft Excel file containing VBA macros. The 'SE_ENABLE_LURE' heuristic indicates the document likely instructs the user to enable macros, a common social engineering tactic. The 'OLE_VBA_CREATEOBJ' and 'OLE_VBA_CALLBYNAME' heuristics suggest the macros are designed to execute arbitrary code. While no specific family is identified, the presence of VBA macros and the lure points to a macro-based downloader. No scripts were extracted, but the presence of macros is sufficient evidence.

Heuristics 7

  • ClamAV: Xls.Malware.Exvk-9785252-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Exvk-9785252-0
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName call
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
62ad0b6dd051e43985f4df0e703aa41b4a769b72d9ea141ab3d437fc063127a1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3777 bytes

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