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

Static analysis result for SHA-256 07d19fca2242eff6…

MALICIOUS

Office (OLE) / .XLS

23.0 KB Created: 2016-05-12 17:39:06 Authoring application: Microsoft Excel First seen: 2026-06-25
MD5: 1ae8bfc80d3e0e3c2aaf907b3af4aa30 SHA-1: 2b66a698aaff8a820942209afe3d724ff2a19035 SHA-256: 07d19fca2242eff63e0fbaec923cb5cda82a757dcf5f4445f1223a76979be8f7
138 Risk Score

Heuristics 6

  • ClamAV: Xls.Malware.Valyria-10008169-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Valyria-10008169-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set fso = CreateObject("Scripting.FileSystemObject")
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
    Sub Auto_Open()
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
        filePath = Environ("temp") + "\eicar-standard-antivirus-test-file-" + Format(Now(), "yyyymmddhhmmss") + ".com"
  • 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) 1246 bytes
SHA-256: 804f69d1add1e1ef617dfb204f19fe33c0e504d0a265a4b73c2eb6d5d9cfc6a7
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*"

    filePath = Environ("temp") + "\eicar-standard-antivirus-test-file-" + Format(Now(), "yyyymmddhhmmss") + ".com"

    Dim fso, file
    Set fso = CreateObject("Scripting.FileSystemObject")
    Set file = fso.CreateTextFile(filePath, True)

    file.Write eicarPart1 + eicarPart2
    file.Close
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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