Analysis
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max time kernel
4294110s -
max time network
56s -
platform
windows7_x64 -
resource
win7-20220223-en -
submitted
07-03-2022 00:30
Static task
static1
Behavioral task
behavioral1
Sample
5fac1a1b95c5esvhost.exe
Resource
win7-20220223-en
General
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Target
5fac1a1b95c5esvhost.exe
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Size
117KB
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MD5
a9f731de650ee1ba0ef91e1386ac2dad
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SHA1
60f6ad3ec25581bb53dac56634cff820e0d6fd81
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SHA256
5966c25dc1abcec9d8603b97919db57aac019e5358ee413957927d3c1790b7f4
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SHA512
248f4e1297ab1e00fda37dd546a7f173ef5d0a0d2fd656adba97f8f07dfa0e1e27d9a7cc4cb55f3b451f7e5ce1ff7cf569cd3da42c91d1ed1bc16a6e93c9c2d0
Malware Config
Extracted
C:\02v43f4e7-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/68AAAA057BA4DA9E
http://decryptor.cc/68AAAA057BA4DA9E
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
5fac1a1b95c5esvhost.exedescription ioc process File renamed C:\Users\Admin\Pictures\SkipDeny.crw => \??\c:\users\admin\pictures\SkipDeny.crw.02v43f4e7 5fac1a1b95c5esvhost.exe File renamed C:\Users\Admin\Pictures\ResumeDisable.png => \??\c:\users\admin\pictures\ResumeDisable.png.02v43f4e7 5fac1a1b95c5esvhost.exe File renamed C:\Users\Admin\Pictures\ResumeApprove.png => \??\c:\users\admin\pictures\ResumeApprove.png.02v43f4e7 5fac1a1b95c5esvhost.exe File renamed C:\Users\Admin\Pictures\SaveSplit.png => \??\c:\users\admin\pictures\SaveSplit.png.02v43f4e7 5fac1a1b95c5esvhost.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
5fac1a1b95c5esvhost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run 5fac1a1b95c5esvhost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\FxHrkpLpWn = "C:\\Users\\Admin\\AppData\\Local\\Temp\\5fac1a1b95c5esvhost.exe" 5fac1a1b95c5esvhost.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
5fac1a1b95c5esvhost.exedescription ioc process File opened (read-only) \??\N: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\S: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\W: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\Z: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\E: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\I: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\J: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\L: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\M: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\O: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\R: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\T: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\B: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\G: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\Y: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\V: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\X: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\K: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\U: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\F: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\H: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\Q: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\D: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\A: 5fac1a1b95c5esvhost.exe File opened (read-only) \??\P: 5fac1a1b95c5esvhost.exe -
Drops file in System32 directory 1 IoCs
Processes:
5fac1a1b95c5esvhost.exedescription ioc process File opened for modification C:\Windows\System32\CatRoot2\dberr.txt 5fac1a1b95c5esvhost.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
5fac1a1b95c5esvhost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1405931862-909307831-4085185274-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\31o6l80g5.bmp" 5fac1a1b95c5esvhost.exe -
Drops file in Program Files directory 14 IoCs
Processes:
5fac1a1b95c5esvhost.exedescription ioc process File created \??\c:\program files\02v43f4e7-readme.txt 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\ExpandWrite.vsdm 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\SkipCopy.tiff 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\CopyRepair.ppsm 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\ExpandConfirm.pcx 5fac1a1b95c5esvhost.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\02v43f4e7-readme.txt 5fac1a1b95c5esvhost.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\v3.5\02v43f4e7-readme.txt 5fac1a1b95c5esvhost.exe File created \??\c:\program files (x86)\microsoft sql server compact edition\v3.5\desktop\02v43f4e7-readme.txt 5fac1a1b95c5esvhost.exe File created \??\c:\program files (x86)\02v43f4e7-readme.txt 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\BlockHide.mpeg3 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\CompareExit.asx 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\PublishBlock.TS 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\SuspendSet.rar 5fac1a1b95c5esvhost.exe File opened for modification \??\c:\program files\UninstallRestart.jpeg 5fac1a1b95c5esvhost.exe -
Processes:
5fac1a1b95c5esvhost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 5fac1a1b95c5esvhost.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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 5fac1a1b95c5esvhost.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
5fac1a1b95c5esvhost.exepid process 1076 5fac1a1b95c5esvhost.exe 1076 5fac1a1b95c5esvhost.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
5fac1a1b95c5esvhost.exevssvc.exedescription pid process Token: SeDebugPrivilege 1076 5fac1a1b95c5esvhost.exe Token: SeTakeOwnershipPrivilege 1076 5fac1a1b95c5esvhost.exe Token: SeBackupPrivilege 1540 vssvc.exe Token: SeRestorePrivilege 1540 vssvc.exe Token: SeAuditPrivilege 1540 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5fac1a1b95c5esvhost.exe"C:\Users\Admin\AppData\Local\Temp\5fac1a1b95c5esvhost.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Drops file in System32 directory
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1076
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:468
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1540
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\02v43f4e7-readme.txt1⤵PID:872
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Public\Desktop\02v43f4e7-readme.txtMD5
da17d155be6e3dfb363e4643550a12ec
SHA1dcc939363c80bd49ec411295b5fd0a0f7f28a7c6
SHA25683e5ccf6e478cb642f84bb33da4639c86f74d91e637f5d96cd14da89f093750a
SHA512a540b74c13ee3d7f052d58c782b43c32d5708aca56282c8d7d78d15ddf541631b438467764fe953c942d7293915fc493c9298c9f3e4188ba33ecd855bcb5e461
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memory/872-55-0x000007FEFC381000-0x000007FEFC383000-memory.dmpFilesize
8KB
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memory/1076-54-0x0000000075801000-0x0000000075803000-memory.dmpFilesize
8KB