Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
27-03-2021 00:03
Static task
static1
Behavioral task
behavioral1
Sample
892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f.dll
Resource
win7v20201028
Behavioral task
behavioral2
Sample
892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f.dll
Resource
win10v20201028
General
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Target
892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f.dll
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Size
119KB
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MD5
52d280d45daba695a565e25cdd2863d8
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SHA1
60c525e2a52137514d3dfa72e8a49a0d4da98759
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SHA256
892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f
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SHA512
8304713277dddc0e9f899d3f91b1a8e33fb654945bd71f45185dcfee70a681df337d53df891272003ec93827aa2d5db77a9c652a3253409fe65b42c368a55701
Malware Config
Extracted
C:\8ro71-read-me-KRBL.txt
sodinokibi
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 1 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\UseInvoke.tif => \??\c:\users\admin\pictures\UseInvoke.tif.8ro71 regsvr32.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
regsvr32.exedescription ioc process File opened (read-only) \??\K: regsvr32.exe File opened (read-only) \??\Q: regsvr32.exe File opened (read-only) \??\T: regsvr32.exe File opened (read-only) \??\W: regsvr32.exe File opened (read-only) \??\A: regsvr32.exe File opened (read-only) \??\B: regsvr32.exe File opened (read-only) \??\G: regsvr32.exe File opened (read-only) \??\I: regsvr32.exe File opened (read-only) \??\Y: regsvr32.exe File opened (read-only) \??\D: regsvr32.exe File opened (read-only) \??\M: regsvr32.exe File opened (read-only) \??\O: regsvr32.exe File opened (read-only) \??\P: regsvr32.exe File opened (read-only) \??\V: regsvr32.exe File opened (read-only) \??\X: regsvr32.exe File opened (read-only) \??\F: regsvr32.exe File opened (read-only) \??\N: regsvr32.exe File opened (read-only) \??\R: regsvr32.exe File opened (read-only) \??\S: regsvr32.exe File opened (read-only) \??\U: regsvr32.exe File opened (read-only) \??\Z: regsvr32.exe File opened (read-only) \??\E: regsvr32.exe File opened (read-only) \??\H: regsvr32.exe File opened (read-only) \??\J: regsvr32.exe File opened (read-only) \??\L: regsvr32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\u42697ooj8.bmp" regsvr32.exe -
Drops file in Program Files directory 18 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification \??\c:\program files\CompareSuspend.ogg regsvr32.exe File opened for modification \??\c:\program files\EnterRequest.xltx regsvr32.exe File opened for modification \??\c:\program files\ReadResolve.temp regsvr32.exe File opened for modification \??\c:\program files\WriteUpdate.jpg regsvr32.exe File created \??\c:\program files\8ro71-read-me-KRBL.txt regsvr32.exe File opened for modification \??\c:\program files\ApproveUnpublish.emf regsvr32.exe File opened for modification \??\c:\program files\ConvertFromFormat.doc regsvr32.exe File opened for modification \??\c:\program files\ExitMove.dot regsvr32.exe File opened for modification \??\c:\program files\ExportNew.ADT regsvr32.exe File opened for modification \??\c:\program files\UnregisterUnprotect.DVR regsvr32.exe File created \??\c:\program files (x86)\8ro71-read-me-KRBL.txt regsvr32.exe File opened for modification \??\c:\program files\DenyResolve.cr2 regsvr32.exe File opened for modification \??\c:\program files\GrantSelect.xltx regsvr32.exe File opened for modification \??\c:\program files\MoveExpand.mov regsvr32.exe File opened for modification \??\c:\program files\ReceiveUnregister.contact regsvr32.exe File opened for modification \??\c:\program files\CheckpointClear.crw regsvr32.exe File opened for modification \??\c:\program files\PublishClose.3g2 regsvr32.exe File opened for modification \??\c:\program files\RevokePop.edrwx regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
regsvr32.exepid process 3476 regsvr32.exe 3476 regsvr32.exe 3476 regsvr32.exe 3476 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
regsvr32.exevssvc.exedescription pid process Token: SeDebugPrivilege 3476 regsvr32.exe Token: SeTakeOwnershipPrivilege 3476 regsvr32.exe Token: SeBackupPrivilege 2608 vssvc.exe Token: SeRestorePrivilege 2608 vssvc.exe Token: SeAuditPrivilege 2608 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 3496 wrote to memory of 3476 3496 regsvr32.exe regsvr32.exe PID 3496 wrote to memory of 3476 3496 regsvr32.exe regsvr32.exe PID 3496 wrote to memory of 3476 3496 regsvr32.exe regsvr32.exe
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f.dll1⤵
- Suspicious use of WriteProcessMemory
PID:3496 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\892083cb3f064e9434df593bfdf6f00e48ab68778bfca8d9a64d697d5d19fe5f.dll2⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3476
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:3224
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2608
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/3476-2-0x0000000000000000-mapping.dmp