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

Static analysis result for SHA-256 80497fd2fbdcb31a…

MALICIOUS

Office (OLE) / .XLS

31.0 KB Created: 2016-05-11 15:52:45 Authoring application: Microsoft Excel First seen: 2026-06-25
MD5: 6c2339eca4f8240e68a095bbd08a5163 SHA-1: 1648817a66b58eded553363adfba5af3d049b6df SHA-256: 80497fd2fbdcb31ae8e0d3d3dc24bdf04f9f313dc2dca0ae32e80579e2c9473e
90 Risk Score

Heuristics 4

  • ClamAV: Xls.Dropper.Eicartest-10004259-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Eicartest-10004259-0
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
    Sub Auto_Open()
  • 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://github.com/mattias-ohlsson/eicar-standard-antivirus-test-files In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 978 bytes
SHA-256: 38762bc0b66d8d69a89beaabe5cc47346ca998d9df6f01697b3e831cee7e18f8
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Module1"
Sub Auto_Open()
    ' https://github.com/mattias-ohlsson/eicar-standard-antivirus-test-files

    ' Simple obfuscation
    Dim eicarPart1 As String
    Dim eicarPart2 As String
    eicarPart1 = "X5O!P%@AP[4\PZX54(P^)7C"
    eicarPart2 = "C)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*"

    MsgBox eicarPart1 + eicarPart2
End Sub

Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "Sheet1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

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