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

Static analysis result for SHA-256 16a452ec933ba11f…

MALICIOUS

Office (OLE) / .XLS

2.85 MB Created: 2019-10-04 12:05:19 Authoring application: Microsoft Excel
MD5: ea097253477f466f3da1c526fa052130 SHA-1: 41a3d0a8f2610207bcf8441bbf2eb86971ff616b SHA-256: 16a452ec933ba11f8265b221f6726431615434033722921d9ad7a658b4a97acb
182 Risk Score

Malware Insights

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

The sample is a malicious Excel file containing a Workbook_Open VBA macro. This macro is designed to execute a PowerShell command, likely to download and run a second-stage payload from the URL https://www.findmyshift.com/import-excel-template. The use of ShellExecute and CreateObject further indicates malicious intent to execute external code.

Heuristics 6

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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 https://www.findmyshift.com/import-excel-template
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml
    • http://schemas.microsoft.com/DataMashup

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
84c54805652e5c04997249b01f4a14af0008e308b9b2edadf720d7c6ab6fabb3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 11945 bytes

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