Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 d6d7a79806cf233e…

MALICIOUS

Office (OLE)

250.0 KB Created: 2019-10-15 06:37:00 Authoring application: Microsoft Office Word First seen: 2019-12-10
MD5: 1dcb86db1d6615fdf305bf21cf2c457e SHA-1: 8953c0606e429f242c6c4466578785af884ec727 SHA-256: d6d7a79806cf233ec3e0e08309806a9fe41ff409611700feec7840c252950130
290 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains heavily obfuscated VBA macros, including an auto-executing loader that uses GetObject and Shell execution. The ClamAV signature and heuristic firings strongly indicate this is an Emotet downloader. The embedded URLs are likely used to fetch and execute a secondary payload, a common tactic for Emotet.

Heuristics 9

  • ClamAV: Doc.Downloader.Emotet-10019714-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10019714-0
  • VBA macros detected medium 4 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER
    Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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 https://orlo.name/intelligent-plastic-table/kyrgyz-republic In document text (OLE body)
    • https://thora.com/capacitor/programming/ivoryIn document text (OLE body)
    • https://theresa.com/toys-tools--books�In document text (OLE body)
    • https://mariana.name/pci/alaska/solid-stateIn document text (OLE body)
    • https://madeline.net/plastic/idaho/visualizeIn document text (OLE body)
    • http://sammie.org/valleysIn document text (OLE body)
    • https://kay.net/borders/marketsIn document text (OLE body)
    • http://talia.com/pixelIn document text (OLE body)
    • http://isabell.biz/compatible/frozen/internationalIn document text (OLE body)
    • https://mariano.com/matrix/total/lavenderIn document text (OLE body)
    • http://kayleigh.name/hill/panelIn document text (OLE body)
    • https://nelle.org/singapore/saint-martinIn document text (OLE body)
    • https://alexys.info/haptic/integration�In document text (OLE body)
    • https://mateo.info/garden-jewelery--sportsIn document text (OLE body)
    • http://arno.org/investment-account/regional/agentIn document text (OLE body)
    • https://brielle.info/reinvent/money-market-account/cambridgeshireIn document text (OLE body)
    • http://darby.org/connecting/functionalities/avonIn document text (OLE body)
    • https://lane.com/bandwidth/industrial-computers--books/freshIn document text (OLE body)
    • https://elva.net/small/fantastic-metal-pizza/back-endIn document text (OLE body)
    • http://darien.biz/ergonomic/agent/ibIn document text (OLE body)
    • https://ferne.biz/client-drivenIn document text (OLE body)
    • http://schuyler.infoIn document text (OLE body)
    • https://tremaine.com/orchid/small-concrete-towelsIn document text (OLE body)
    • http://cornell.net/program/steel/awesomeIn document text (OLE body)
    • https://kaylee.name/nevadaIn document text (OLE body)
    • https://lolita.com/licensed-granite-computerIn document text (OLE body)
    • https://abbigail.net/generic-frozen-computerIn document text (OLE body)
    • https://elva.net/solutionsWINW�In document text (OLE body)
    • http://tatyana.net/e-markets/plasticIn document text (OLE body)
    • http://neil.info/sleek/transformC++-No�In document text (OLE body)
    • https://jena.name/ergonomic-wooden-chairIn document text (OLE body)
    • http://gregoria.name/wirelessIn document text (OLE body)
    • http://sigrid.org/heIn document text (OLE body)
    • https://cole.com/portals/awesome-steel-bacon/user-friendlyIn document text (OLE body)
    • http://sylvan.net/accountsIn document text (OLE body)
    • https://eriberto.name/reboot/card/auto-loan-accountIn document text (OLE body)
    • http://brody.info/leading-edge/bandwidthIn document text (OLE body)
    • http://afton.org/olive/granite/legacyIn document text (OLE body)
    • https://ignacio.com/implement/invoiceIn document text (OLE body)
    • https://dion.name/shoes/assimilated���In document text (OLE body)
    • https://morgan.com/web-enabled/legacy/virtualIn document text (OLE body)
    • http://vito.name/toolset/assistant/auto-loan-accountIn document text (OLE body)
    • http://zackery.org/springs/access/researchIn document text (OLE body)
    • http://katelynn.com/reinvent/algorithm���In document text (OLE body)
    • https://marge.net/ohio/brandIn document text (OLE body)
    • https://myrtis.name/games/exploitIn document text (OLE body)
    • https://rene.net/floridaIn document text (OLE body)
    • http://gustave.com/applicationIn document text (OLE body)
    • https://abbey.info/quality/licensed-rubber-tableIn document text (OLE body)
    • http://bertram.com/savings-account�In document text (OLE body)
    +2021 more URL(s)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 75320 bytes
SHA-256: afbbcf92b881e1def0d9773c89ed741dbafee8773b6e50e59e8628fa88d1f0ac
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "IAAGC1AB4AA"
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 = "RcoAo44AAU, 0, 0, MSForms, TextBox"
Attribute VB_Control = "ZBGDGQAD, 1, 1, MSForms, TextBox"
Attribute VB_Control = "ExZBUBAABGA, 2, 2, MSForms, TextBox"
Attribute VB_Control = "W1cXBAUQc, 3, 3, MSForms, TextBox"
Attribute VB_Control = "NkAAAAAwX, 4, 4, MSForms, TextBox"
Attribute VB_Control = "VDQACAAkA, 5, 5, MSForms, TextBox"

Attribute VB_Name = "EAwQAwUBQDD"
Function YoBA_4AQ4wA()
On Error Resume Next
   Rem https://tremaine.com/orchid/small-concrete-towels http://cornell.net/program/steel/awesome
Rem https://kaylee.name/nevada https://lolita.com/licensed-granite-computer
Rem https://abbigail.net/generic-frozen-computer https://elva.net/solutions
Rem http://tatyana.net/e-markets/plastic http://neil.info/sleek/transform
Rem https://jena.name/ergonomic-wooden-chair http://gregoria.name/wireless
Rem http://sigrid.org/heights/efficient https://orlo.name/intelligent-plastic-table/kyrgyz-republic
Rem https://thora.com/capacitor/programming/ivory https://theresa.com/toys-tools--books
Rem https://mariana.name/pci/alaska/solid-state https://madeline.net/plastic/idaho/visualize
Rem http://sammie.org/valleys https://kay.net/borders/markets
Rem http://talia.com/pixel http://isabell.biz/compatible/frozen/international
Rem https://mariano.com/matrix/total/lavender http://kayleigh.name/hill/panel
Rem https://nelle.org/singapore/saint-martin https://alexys.info/haptic/integration
Rem https://mateo.info/garden-jewelery--sports http://arno.org/investment-account/regional/agent
Rem https://brielle.info/reinvent/money-market-account/cambridgeshire http://darby.org/connecting/functionalities/avon
Rem https://lane.com/bandwidth/industrial-computers--books/fresh https://elva.net/small/fantastic-metal-pizza/back-end
Rem http://darien.biz/ergonomic/agent/ib https://ferne.biz/client-driven
Rem http://schuyler.info/harbors/hack/firewall https://cole.com/portals/awesome-steel-bacon/user-friendly
Rem http://sylvan.net/accounts https://eriberto.name/reboot/card/auto-loan-account
Rem http://brody.info/leading-edge/bandwidth http://afton.org/olive/granite/legacy
Rem https://ignacio.com/implement/invoice https://dion.name/shoes/assimilated
Rem https://morgan.com/web-enabled/legacy/virtual http://vito.name/toolset/assistant/auto-loan-account
Rem http://zackery.org/springs/access/research http://katelynn.com/reinvent/algorithm
Rem https://marge.net/ohio/brand https://myrtis.name/games/exploit
Rem https://rene.net/florida http://gustave.com/application
Rem https://abbey.info/quality/licensed-rubber-table http://bertram.com/savings-account
   Rem https://garret.biz/pennsylvania/minnesota/invoice https://sidney.com/quantifying/focused/black
Rem https://madonna.org/generic/explicit https://sandra.biz/north-carolina/parkway
Rem https://kimberly.com/quantifying/music/nepalese-rupee http://otilia.org/unbranded/real-time/avon
Rem http://reggie.name/salmon/agent http://hermina.com/object-oriented/streamline
Rem https://sigurd.net/central/implement/buckinghamshire https://arthur.biz/yellow/operations
Rem http://dereck.org/deposit http://tiffany.name/sleek/help-desk/synergies
Rem http://gwen.net/frozen/experiences https://hallie.info/granite
Rem https://madeline.name/black/override/reboot http://ophelia.com/principal/bedfordshire
Rem http://kay.net/harbor http://isaias.biz/contextually-based/user-facing
Rem http://layne.net/awesome/cross-group/enterprise-wide https://lelia.info/tunnel/automotive
Rem https://layla.info/transparent/incredible https://aryanna.info/north-carolina/global/gorgeous-concrete-salad
Rem https://avery.net/direct/designer https://ericka.net/eco-centric
Rem https://coleman.name/internal https://vivian.info/virtual/villages
Rem http://rafaela.info/bypass/group http://kelsie.net/connecting
Re
... (truncated)

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