Analysis
-
max time kernel
174s -
max time network
198s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 01:13
Static task
static1
Behavioral task
behavioral1
Sample
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe
Resource
win10-en-20211208
General
-
Target
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe
-
Size
116KB
-
MD5
dda952538754432a74b04a1bfeee1676
-
SHA1
29b48dfc31a9647b1ad08e306d3a3c78f780e298
-
SHA256
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316
-
SHA512
e3ffffd92f2363b9f472b685789fcc6f5a5947a852a95ba4b7530f802df927ef7ddf23c97442b66218249d55566374b5fcbc191f33fcbde1f60cdd7373b09ba4
Malware Config
Extracted
C:\8skf4-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/9CDE3133D2C3C8E9
http://decryptor.cc/9CDE3133D2C3C8E9
Signatures
-
Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
-
Modifies extensions of user files 3 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription ioc process File renamed C:\Users\Admin\Pictures\SyncConfirm.tiff => \??\c:\users\admin\pictures\SyncConfirm.tiff.8skf4 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File renamed C:\Users\Admin\Pictures\FormatAdd.png => \??\c:\users\admin\pictures\FormatAdd.png.8skf4 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\users\admin\pictures\SyncConfirm.tiff b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5gWVTP1TBI = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe" b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription ioc process File opened (read-only) \??\N: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\W: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\Z: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\D: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\E: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\S: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\I: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\J: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\P: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\X: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\Y: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\B: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\F: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\H: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\K: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\L: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\M: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\O: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\Q: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\A: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\G: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\U: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\V: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\R: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened (read-only) \??\T: b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\k3p8.bmp" b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Drops file in Program Files directory 18 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription ioc process File opened for modification \??\c:\program files\GroupOptimize.asp b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\LimitCheckpoint.vstm b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\LockCopy.shtml b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\SplitConvertTo.mp3 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\UpdateUninstall.mpp b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File created \??\c:\program files (x86)\8skf4-readme.txt b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\SetCompare.jpeg b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\SubmitAssert.pps b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\TraceResize.edrwx b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\ExpandComplete.html b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\ReceiveAssert.mp3 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\RepairHide.dib b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\ConvertEnable.wma b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\EnableAdd.bmp b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\GroupConfirm.ram b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\RestoreRepair.wpl b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File opened for modification \??\c:\program files\WatchJoin.mp2v b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe File created \??\c:\program files\8skf4-readme.txt b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exepowershell.exepid process 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe 2708 powershell.exe 2708 powershell.exe 2708 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe Token: SeDebugPrivilege 2708 powershell.exe Token: SeBackupPrivilege 872 vssvc.exe Token: SeRestorePrivilege 872 vssvc.exe Token: SeAuditPrivilege 872 vssvc.exe Token: SeTakeOwnershipPrivilege 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exedescription pid process target process PID 1340 wrote to memory of 2708 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe powershell.exe PID 1340 wrote to memory of 2708 1340 b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe powershell.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe"C:\Users\Admin\AppData\Local\Temp\b8b54a569fb9de772a995c6fa9e426791489b12f4482b2deeae28a5181e8c316.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/2708-122-0x0000022FF09A0000-0x0000022FF09C2000-memory.dmpFilesize
136KB
-
memory/2708-125-0x0000022FF0100000-0x0000022FF0102000-memory.dmpFilesize
8KB
-
memory/2708-126-0x0000022FF0103000-0x0000022FF0105000-memory.dmpFilesize
8KB
-
memory/2708-127-0x0000022FF0B50000-0x0000022FF0BC6000-memory.dmpFilesize
472KB