分类目录归档：Oracle

.asistchinadecryption扩展名勒索数据库恢复

发表于 2022 年 2 月 9 日 由 惜分飞

有朋友公司服务器上的oracle数据库和sql数据库被加密,扩展名类似：.asistchinadecryption .138-E29-529
20220209223616
20220209214733

!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT 内容

!!! ALL YOUR FILES ARE ENCRYPTED !!!

All your files, documents, photos, databases and other important files are encrypted.

You are not able to decrypt it by yourself! The only method of recovering files 
is to purchase an unique private key.
Only we can give you this key and only we can recover your files.

To be sure we have the decryptor and it works you can send an email: 
asistchinadecryption2022@goat.si and decrypt one file for free.
But this file should be of not valuable!

Do you really want to restore your files?
Write to email: asistchinadecryption2022@goat.si 

The alternative way to contact us is to use Jabber: 
1. Visit https://psi-im.org/download/ 
2. Download and install Psi on your PC. 
3. Register new account on https://jabb.im/reg/ 
4. Add new account in Psi. 
5. Add our contact - china_decr2021@xmpp.jp 

Your personal ID: 208-BF2-C97

Attention!
 * Do not rename encrypted files.
 * Do not try to decrypt your data using third party software, it may cause permanent data loss.
 * Decryption of your files with the help of third parties may cause increased price 
(they add their fee to our) or you can become a victim of a scam.

通过底层分析损坏情况
20220209214827

基本上可以判断，该勒索是每64M加密64k数据,理论上绝大部分数据都可以恢复,通过我们自研的oracle和sql恢复工具实现绝大部分数据恢复
20220209224239
对于类似这种被加密的勒索的数据文件,我们可以实现比较好的恢复效果,如果此类的数据库(oracle,mysql,sql server)等被加密,需要专业恢复技术支持，请联系我们:
电话/微信:17813235971    Q Q:107644445QQ咨询惜分飞    E-Mail:dba@xifenfei.com
系统安全防护措施建议：
1.多台机器，不要使用相同的账号和口令
2.登录口令要有足够的长度和复杂性，并定期更换登录口令
3.重要资料的共享文件夹应设置访问权限控制，并进行定期备份
4.定期检测系统和软件中的安全漏洞，及时打上补丁。
5.定期到服务器检查是否存在异常。
6.安装安全防护软件，并确保其正常运行。
7.从正规渠道下载安装软件。
8.对不熟悉的软件，如果已经被杀毒软件拦截查杀，不要添加信任继续运行。
9.保存良好的备份习惯，尽量做到每日备份，异地备份。

发表在 勒索恢复 | 标签为 , , , , | 评论关闭

.[decrypt20@firemail.cc].eking 数据库勒索恢复

发表于 2022 年 2 月 9 日 由 惜分飞

前段时间,有客户多套库被勒索病毒加密（扩展名类似：.[decrypt20@firemail.cc].eking），包含oracle和sql server数据库
20220209210654
20220209211220

通过专业工具检测分析,判断损坏情况
20220209212325
基于上述分析,对于此类oracle数据库,我们可以通过自研的工具进行恢复，实现数据库直接open,然后直接导出数据
QQ截图20220128143658
对于sql数据库直接使用我们的工具把数据恢复到一个新库中
20220209213432
对于类似这种被加密的勒索的数据文件,我们可以实现比较好的恢复效果,如果此类的数据库(oracle,mysql,sql server)等被加密,需要专业恢复技术支持，请联系我们:
电话/微信:17813235971    Q Q:107644445QQ咨询惜分飞    E-Mail:dba@xifenfei.com

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ocr磁盘组掉盘故障处理

发表于 2022 年 2 月 3 日 由 惜分飞

由于某种故障导致crs的OCR_0001盘掉线，votedisk从3个变为了2个

WARNING: Write Failed. group:3 disk:1 AU:1 offset:4190208 size:4096
WARNING: Hbeat write to PST disk 1.3915948466 in group 3 failed. [4]
Mon Jun 14 15:31:11 2021
NOTE: process _b000_+asm1 (21889) initiating offline of disk 1.3915948466 (OCR_0001) with mask 0x7e in group 3
NOTE: checking PST: grp = 3
GMON checking disk modes for group 3 at 14 for pid 28, osid 21889
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: checking PST for grp 3 done.
NOTE: sending set offline flag message 1047812201 to 1 disk(s) in group 3
WARNING: Disk OCR_0001 in mode 0x7f is now being offlined
INFO: Instance #2 could not find disk 1 in group 3
NOTE: initiating PST update: grp = 3, dsk = 1/0xe968a1b2, mask = 0x6a, op = clear
GMON updating disk modes for group 3 at 15 for pid 28, osid 21889
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: PST update grp = 3 completed successfully 
NOTE: initiating PST update: grp = 3, dsk = 1/0xe968a1b2, mask = 0x7e, op = clear
GMON updating disk modes for group 3 at 16 for pid 28, osid 21889
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: cache closing disk 1 of grp 3: OCR_0001
NOTE: PST update grp = 3 completed successfully 
Mon Jun 14 15:31:13 2021
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 3 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Successful voting file relocation on diskgroup OCR
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Successful voting file relocation on diskgroup OCR
Mon Jun 14 15:34:08 2021
WARNING: PST-initiated drop of 1 disk(s) in group 3(.1918390620))
SQL> alter diskgroup OCR drop disk OCR_0001 force /* ASM SERVER */ 
NOTE: GroupBlock outside rolling migration privileged region
NOTE: requesting all-instance membership refresh for group=3
Mon Jun 14 15:34:10 2021
GMON updating for reconfiguration, group 3 at 17 for pid 28, osid 21889
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: cache closing disk 1 of grp 3: (not open) OCR_0001
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: group 3 PST updated.
Mon Jun 14 15:34:10 2021
NOTE: membership refresh pending for group 3/0x7258515c (OCR)
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Successful voting file relocation on diskgroup OCR
GMON querying group 3 at 18 for pid 18, osid 8900
NOTE: group OCR: updated PST location: disk 0000 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 1)
NOTE: cache closing disk 1 of grp 3: (not open) _DROPPED_0001_OCR
SUCCESS: refreshed membership for 3/0x7258515c (OCR)
SUCCESS: alter diskgroup OCR drop disk OCR_0001 force /* ASM SERVER */

在第一次掉盘之后rebalance完成之后，又掉一块盘,ocr磁盘组正常,表决盘因为就只有一个磁盘,无法在ocr磁盘组中refresh到其他磁盘上

Tue Jun 15 04:41:42 2021
WARNING: Waited 15 secs for write IO to PST disk 0 in group 3.
WARNING: Waited 15 secs for write IO to PST disk 0 in group 3.
Tue Jun 15 04:41:42 2021
NOTE: process _b000_+asm1 (58548) initiating offline of disk 0.3915948465 (OCR_0000) with mask 0x7e in group 3
NOTE: checking PST: grp = 3
GMON checking disk modes for group 3 at 23 for pid 28, osid 58548
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: checking PST for grp 3 done.
NOTE: sending set offline flag message 3615961191 to 1 disk(s) in group 3
WARNING: Disk OCR_0000 in mode 0x7f is now being offlined
INFO: Instance #2 could not find disk 1 in group 3
NOTE: initiating PST update: grp = 3, dsk = 0/0xe968a1b1, mask = 0x6a, op = clear
GMON updating disk modes for group 3 at 24 for pid 28, osid 58548
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: PST update grp = 3 completed successfully 
NOTE: initiating PST update: grp = 3, dsk = 0/0xe968a1b1, mask = 0x7e, op = clear
GMON updating disk modes for group 3 at 25 for pid 28, osid 58548
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: cache closing disk 0 of grp 3: OCR_0000
NOTE: PST update grp = 3 completed successfully 
Tue Jun 15 04:41:44 2021
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
WARNING: Waited 18 secs for write IO to PST disk 0 in group 3.
WARNING: Waited 18 secs for write IO to PST disk 0 in group 3.
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
Tue Jun 15 04:44:21 2021
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
Tue Jun 15 04:44:21 2021
WARNING: PST-initiated drop of 1 disk(s) in group 3(.1918390620))
SQL> alter diskgroup OCR drop disk OCR_0000 force /* ASM SERVER */ 
NOTE: GroupBlock outside rolling migration privileged region
NOTE: requesting all-instance membership refresh for group=3
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
Tue Jun 15 04:44:24 2021
GMON updating for reconfiguration, group 3 at 26 for pid 28, osid 58548
NOTE: cache closing disk 0 of grp 3: (not open) OCR_0000
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: group 3 PST updated.
NOTE: membership refresh pending for group 3/0x7258515c (OCR)
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
GMON querying group 3 at 27 for pid 18, osid 8900
NOTE: cache closing disk 0 of grp 3: (not open) _DROPPED_0000_OCR
SUCCESS: refreshed membership for 3/0x7258515c (OCR)
NOTE: starting rebalance of group 3/0x7258515c (OCR) at power 1
SUCCESS: alter diskgroup OCR drop disk OCR_0000 force /* ASM SERVER */

查询这个时候的ocr磁盘组相关信息
7a57d339c00820129cb3522c5082f35

可以明显的看到，ocr磁盘组只剩余1个disk,查询表决盘信息

node1-> crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   3619aee7c3b04fc1bfa5c4ce659acbf7 (/dev/emcpowerc) [OCR]
 2. ONLINE   00bc3e79f7404ff2bf60925a7b8a5a6d (/dev/emcpowere) [OCR]
Located 2 voting disk(s).

可以发现表决盘中的两个disk一个属于ocr磁盘组，一个是被ocr磁盘组drop掉的磁盘，尝试增加以前离线的磁盘到ocr磁盘组

SQL> alter diskgroup OCR add  disk '/dev/emcpowerc';
alter diskgroup OCR add  disk '/dev/emcpowerc'
*
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15033: disk '/dev/emcpowerc' belongs to diskgroup "OCR"


SQL> alter diskgroup OCR add  disk '/dev/emcpowerc' force  
  2  ;
alter diskgroup OCR add  disk '/dev/emcpowerc' force
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 15191
Session ID: 1613 Serial number: 7

查看alert日志

SQL> alter diskgroup OCR add  disk '/dev/emcpowerc' force
NOTE: GroupBlock outside rolling migration privileged region
NOTE: Assigning number (3,4) to disk (/dev/emcpowerc)
NOTE: requesting all-instance membership refresh for group=3
WARNING: ignoring disk /dev/emcpowerd in deep discovery
NOTE: initializing header on grp 3 disk OCR_0004
WARNING: ignoring disk /dev/emcpowerd in deep discovery
NOTE: requesting all-instance disk validation for group=3
NOTE: skipping rediscovery for group 3/0x725d2390 (OCR) on local instance.
NOTE: requesting all-instance disk validation for group=3
NOTE: skipping rediscovery for group 3/0x725d2390 (OCR) on local instance.
NOTE: Attempting voting file relocation on diskgroup OCR
Errors in file /u01/app/grid/diag/asm/+asm/+ASM1/trace/+ASM1_rbal_12207.trc  (incident=311185):
ORA-00600: internal error code, arguments: [kfdvfGetCurrent_baddsk], [], [], [], [], [], [], [], [], [], [], []
Incident details in: /u01/app/grid/diag/asm/+asm/+ASM1/incident/incdir_311185/+ASM1_rbal_12207_i311185.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
ERROR: ORA-600 thrown in RBAL for group number 3
Errors in file /u01/app/grid/diag/asm/+asm/+ASM1/trace/+ASM1_rbal_12207.trc:
ORA-00600: internal error code, arguments: [kfdvfGetCurrent_baddsk], [], [], [], [], [], [], [], [], [], [], []
Errors in file /u01/app/grid/diag/asm/+asm/+ASM1/trace/+ASM1_rbal_12207.trc:
ORA-00600: internal error code, arguments: [kfdvfGetCurrent_baddsk], [], [], [], [], [], [], [], [], [], [], []
RBAL (ospid: 12207): terminating the instance due to error 488

由于ORA-600 kfdvfGetCurrent_baddsk错误导致增加磁盘失败,通过上面查询的votedisk的信息,可以发现emcpowerc这个盘虽然ocr中离线,但是依旧还是votedisk盘,因此无法增加到该磁盘组中,采用变通方法,先加另外一块盘

SQL> alter diskgroup OCR add failgroup OCR_0001 disk '/dev/emcpowerd' force;

Diskgroup altered.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
node1-> crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   00bc3e79f7404ff2bf60925a7b8a5a6d (/dev/emcpowere) [OCR]
 2. ONLINE   0eef8152df5d4f41bf973ad5dc5a6cb1 (/dev/emcpowerd) [OCR]
Located 2 voting disk(s).

增加成功emcpowerd之后,emcpowerc已经不再是表决盘，变为了emcpowerd,再次增加emcpowerc

SQL> alter diskgroup OCR add failgroup OCR_0000 disk '/dev/emcpowerc' force;

Diskgroup altered.

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Real Application Clusters and Automatic Storage Management options
node1-> crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE   00bc3e79f7404ff2bf60925a7b8a5a6d (/dev/emcpowere) [OCR]
 2. ONLINE   0eef8152df5d4f41bf973ad5dc5a6cb1 (/dev/emcpowerd) [OCR]
 3. ONLINE   4f6201f808dc4ff3bf928b14eae0d4a6 (/dev/emcpowerc) [OCR]
Located 3 voting disk(s).

ASMCMD> lsdsk -G ocr
Path
/dev/emcpowerc
/dev/emcpowerd
/dev/emcpowere

SQL> alter diskgroup OCR add failgroup OCR_0000 disk '/dev/emcpowerc' force 
NOTE: GroupBlock outside rolling migration privileged region
NOTE: Assigning number (3,0) to disk (/dev/emcpowerc)
NOTE: requesting all-instance membership refresh for group=3
NOTE: initializing header on grp 3 disk OCR_0000
NOTE: requesting all-instance disk validation for group=3
Mon Jan 24 17:47:42 2022
NOTE: skipping rediscovery for group 3/0x725dccb9 (OCR) on local instance.
NOTE: requesting all-instance disk validation for group=3
NOTE: skipping rediscovery for group 3/0x725dccb9 (OCR) on local instance.
Mon Jan 24 17:47:48 2022
GMON updating for reconfiguration, group 3 at 20 for pid 30, osid 16978
NOTE: group 3 PST updated.
NOTE: initiating PST update: grp = 3
GMON updating group 3 at 21 for pid 30, osid 16978
NOTE: group OCR: updated PST location: disk 0002 (PST copy 0)
NOTE: group OCR: updated PST location: disk 0005 (PST copy 1)
NOTE: group OCR: updated PST location: disk 0000 (PST copy 2)
NOTE: PST update grp = 3 completed successfully 
NOTE: membership refresh pending for group 3/0x725dccb9 (OCR)
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
GMON querying group 3 at 22 for pid 18, osid 15952
NOTE: cache opening disk 0 of grp 3: OCR_0000 path:/dev/emcpowerc
Mon Jan 24 17:47:53 2022
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: Failed voting file relocation on diskgroup OCR
GMON querying group 3 at 23 for pid 18, osid 15952
SUCCESS: refreshed membership for 3/0x725dccb9 (OCR)
Mon Jan 24 17:47:53 2022
SUCCESS: alter diskgroup OCR add failgroup OCR_0000 disk '/dev/emcpowerc' force
NOTE: starting rebalance of group 3/0x725dccb9 (OCR) at power 1
Starting background process ARB0
Mon Jan 24 17:47:53 2022
ARB0 started with pid=31, OS id=17092 
NOTE: assigning ARB0 to group 3/0x725dccb9 (OCR) with 1 parallel I/O
cellip.ora not found.
NOTE: F1X0 copy 3 relocating from 65534:4294967294 to 0:2 for diskgroup 3 (OCR)
NOTE: stopping process ARB0
SUCCESS: rebalance completed for group 3/0x725dccb9 (OCR)
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 2 voting file(s).
NOTE: Voting file relocation is required in diskgroup OCR
NOTE: Attempting voting file relocation on diskgroup OCR
NOTE: voting file allocation on grp 3 disk OCR_0000
NOTE: Successful voting file relocation on diskgroup OCR
Mon Jan 24 17:47:57 2022
NOTE: GroupBlock outside rolling migration privileged region
NOTE: requesting all-instance membership refresh for group=3
NOTE: membership refresh pending for group 3/0x725dccb9 (OCR)
Mon Jan 24 17:48:03 2022
GMON querying group 3 at 24 for pid 18, osid 15952
SUCCESS: refreshed membership for 3/0x725dccb9 (OCR)
Mon Jan 24 17:48:06 2022
NOTE: Attempting voting file refresh on diskgroup OCR
NOTE: Refresh completed on diskgroup OCR
. Found 3 voting file(s).

表决磁盘组从2个变为了3个,ocr磁盘组也恢复了正常的3个,至此OCR掉盘的故障处理完成

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