Re: TEMP files under /opt/zeek/spool/worker-*-*/extract_files
Justin Azoff <[email protected]> Tue, 31 Dec 2019 09:27:19 -0500
| Newsgroups | gmane.comp.security.detection.bro |
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| Message-ID | <CAPfnCuhdPSUO40gXC_ftuGTXtiX1SsMrj03j6M1Uex2vHLaf0w@mail.gmail.com> |
--===============0625548806== Content-Type: multipart/alternative; boundary="00000000000013f3ec059b00c477" --00000000000013f3ec059b00c477 Content-Type: text/plain; charset="UTF-8" Those aren't TEMP files as far as zeek is concerned. Those are being extracted by the BZAR script: https://github.com/mitre-attack/bzar/blob/master/scripts/bzar_files.bro they just happen to be from c:\windows\TEMP\ on the server. You should be analyzing those files, or if you don't want them at all the bzar script has BZAR::file_extract_option or some other ways of filtering things to turn that feature off. On Mon, Dec 30, 2019 at 4:35 PM Scot Harris <[email protected]> wrote: > While running some system checks, I noted that on the two zeek 3.0 boxes I > have in a cluster that drive space was being taken up in the following > directory: > > > > /opt/zeek/spool/worker-3-1/extract_files. > > > > These files not large but numerous. > > > > total 15884720 > > -rw-rw-r-- 1 zeek zeek 50 Dec 30 16:26 > CZi12w40mQqZt08H24_FWsM9w4uCR965XUybc__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-93.txt > > -rw-rw-r-- 1 zeek zeek 326 Dec 30 16:26 > CZi12w40mQqZt08H24_FEJBtK3MwBWHCM3ET__10.1.24.161_c$Windows_TEMP_fstmp_fs_action_110812.bat > > -rw-rw-r-- 1 zeek zeek 44 Dec 30 16:26 > CZi12w40mQqZt08H24_FzgNR24m7uP0dbeI54__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-92.txt > > -rw-rw-r-- 1 zeek zeek 315 Dec 30 16:26 > CZi12w40mQqZt08H24_FlcyIJ91gLM90QJhe__10.1.24.161_c$Windows_TEMP_fstmp_fs_action_110811.bat > > -rw-rw-r-- 1 zeek zeek 23 Dec 30 16:26 > CZi12w40mQqZt08H24_FXnI1p4BopgQQE4jye__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-91.txt > > -rw-rw-r-- 1 zeek zeek 285 Dec 30 16:26 > CZi12w40mQqZt08H24_FXROsS11QBGTbOJGNd__10.1.24.161_c$Windows_TEMP_fstmp_fs_action_110810.bat > > -rw-rw-r-- 1 zeek zeek 19 Dec 30 16:25 > CZi12w40mQqZt08H24_FZ3vCj4O7BqZZYdgT__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-90.txt > > -rw-rw-r-- 1 zeek zeek 330 Dec 30 16:25 > CZi12w40mQqZt08H24_FozvDx13eGGG5Sssyc__10.1.24.161_c$Windows_TEMP_fstmp_fs_action_110793.bat > > -rw-rw-r-- 1 zeek zeek 77 Dec 30 16:25 > CZi12w40mQqZt08H24_FIwGEp2TW6WJ8IbEcd__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-89.txt > > -rw-rw-r-- 1 zeek zeek 313 Dec 30 16:25 > CZi12w40mQqZt08H24_FWm9sG44On6hV5AoWj__10.1.24.161_c$Windows_TEMP_fstmp_fs_action_110781.bat > > -rw-rw-r-- 1 zeek zeek 10 Dec 30 16:25 > CZi12w40mQqZt08H24_Fo3rTB2pdq5ooABUCa__10.1.24.161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-88.txt > > > > Can these files be purged periodically? > > > > Seeing this on both the master box and the cluster node. > > > > Thank you. > > > > > _______________________________________________ > Zeek mailing list > [email protected] > http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/zeek -- Justin --00000000000013f3ec059b00c477 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">Those aren't TEMP files as far as zeek is concerned.= =C2=A0 Those are being extracted by the BZAR script:=C2=A0<a href=3D"https:= //github.com/mitre-attack/bzar/blob/master/scripts/bzar_files.bro">https://= github.com/mitre-attack/bzar/blob/master/scripts/bzar_files.bro</a><div><br= ></div><div>they just happen to be from c:\windows\TEMP\ on the server.</di= v><div><br></div><div>You should be analyzing those files, or if you don= 9;t want them at all the bzar script has=C2=A0<span style=3D"color:rgb(36,4= 1,46);font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo= ,monospace;font-size:12px;white-space:pre">BZAR::file_extract_option</span>= =C2=A0or some other ways of filtering things to turn that feature off.</div= ></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr"= >On Mon, Dec 30, 2019 at 4:35 PM Scot Harris <<a href=3D"mailto:SHARRIS@= hollywoodfl.org">[email protected]</a>> wrote:<br></div><blockquot= e class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px s= olid rgb(204,204,204);padding-left:1ex"> <div lang=3D"EN-US"> <div class=3D"gmail-m_-7380747925791475038WordSection1"> <p class=3D"MsoNormal">While running some system checks, I noted that on th= e two zeek 3.0 boxes I have in a cluster that drive space was being taken u= p in the following directory:<u></u><u></u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">/opt/zeek/spool/worker-3-1/extract_files.<u></u><u><= /u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">These files not large but numerous.<u></u><u></u></p= > <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">total 15884720<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 50 Dec 30 16:26 CZi12w40mQqZt08H24_FWsM9w4uCR965XUybc__10.1.24= .161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-93.txt<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 326 Dec 30 16:26 CZi12w40mQqZt08H24_FEJBtK3MwBWHCM3ET__10.1.24.161_c= $Windows_TEMP_fstmp_fs_action_110812.bat<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 44 Dec 30 16:26 CZi12w40mQqZt08H24_FzgNR24m7uP0dbeI54__10.1.24= .161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-92.txt<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 315 Dec 30 16:26 CZi12w40mQqZt08H24_FlcyIJ91gLM90QJhe__10.1.24.161_c= $Windows_TEMP_fstmp_fs_action_110811.bat<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 23 Dec 30 16:26 CZi12w40mQqZt08H24_FXnI1p4BopgQQE4jye__10.1.24= .161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-91.txt<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 285 Dec 30 16:26 CZi12w40mQqZt08H24_FXROsS11QBGTbOJGNd__10.1.24.161_= c$Windows_TEMP_fstmp_fs_action_110810.bat<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 19 Dec 30 16:25 CZi12w40mQqZt08H24_FZ3vCj4O7BqZZYdgT__10.1.24.= 161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-90.txt<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 330 Dec 30 16:25 CZi12w40mQqZt08H24_FozvDx13eGGG5Sssyc__10.1.24.161_= c$Windows_TEMP_fstmp_fs_action_110793.bat<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 77 Dec 30 16:25 CZi12w40mQqZt08H24_FIwGEp2TW6WJ8IbEcd__10.1.24= .161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-89.txt<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0 313 Dec 30 16:25 CZi12w40mQqZt08H24_FWm9sG44On6hV5AoWj__10.1.24.161_= c$Windows_TEMP_fstmp_fs_action_110781.bat<u></u><u></u></p> <p class=3D"MsoNormal">-rw-rw-r-- 1 zeek zeek=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 10 Dec 30 16:25 CZi12w40mQqZt08H24_Fo3rTB2pdq5ooABUCa__10.1.24= .161_c$Windows_TEMP_fstmp_fs_smbfile_10.1.24.161-88.txt<u></u><u></u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">Can these files be purged periodically?<u></u><u></u= ></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">Seeing this on both the master box and the cluster n= ode.<u></u><u></u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal">Thank you.<u></u><u></u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> <p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p> </div> </div> _______________________________________________<br> Zeek mailing list<br> <a href=3D"mailto:[email protected]" target=3D"_blank">[email protected]</a><br> <a href=3D"http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/zeek" rel=3D"n= oreferrer" target=3D"_blank">http://mailman.ICSI.Berkeley.EDU/mailman/listi= nfo/zeek</a></blockquote></div><br clear=3D"all"><div><br></div>-- <br><div= dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"ltr">Justin</div></div> --00000000000013f3ec059b00c477-- --===============0625548806== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Zeek mailing list [email protected] http://mailman.ICSI.Berkeley.EDU/mailman/listinfo/zeek --===============0625548806==--