Analysis
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max time kernel
157s -
max time network
137s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
01/02/2022, 15:50
Static task
static1
Behavioral task
behavioral1
Sample
1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe
Resource
win10v2004-en-20220113
General
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Target
1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe
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Size
662KB
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MD5
9148e0f611793ed63f4348501b3f3f9d
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SHA1
47b8bf8860f7c5d4c25cad24de6ab6cf525fa74f
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SHA256
1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f
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SHA512
4f78d1dbbf70c044e86d979d646df26d4868297ffe7d59e2769bbd291c9b41a344e1d97b65bfbf74b012b39aa7cc41e0cd19003ca04e05a6572f7185023386ad
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Recovery_Instructions.html
Signatures
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 10 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\PushUnregister.raw => C:\Users\Admin\Pictures\PushUnregister.raw.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\UpdateGet.tiff => C:\Users\Admin\Pictures\UpdateGet.tiff.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\MountGrant.raw => C:\Users\Admin\Pictures\MountGrant.raw.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened for modification C:\Users\Admin\Pictures\ShowGrant.tiff 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\ShowGrant.tiff => C:\Users\Admin\Pictures\ShowGrant.tiff.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened for modification C:\Users\Admin\Pictures\StopSet.tiff 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\StopSet.tiff => C:\Users\Admin\Pictures\StopSet.tiff.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\UnblockExit.tif => C:\Users\Admin\Pictures\UnblockExit.tif.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened for modification C:\Users\Admin\Pictures\UpdateGet.tiff 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File renamed C:\Users\Admin\Pictures\ExpandGet.png => C:\Users\Admin\Pictures\ExpandGet.png.lockfiles 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\AppData\\Roaming\\svhost.exe" 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-3846991908-3261386348-1409841751-1000\desktop.ini 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\B: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\E: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\F: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\I: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\J: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\L: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\S: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\Z: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\M: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\N: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\Q: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\R: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\U: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\Y: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\G: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\H: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\O: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\T: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\V: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\W: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\A: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\K: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\P: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe File opened (read-only) \??\X: 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1188 vssadmin.exe 2024 vssadmin.exe 696 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 29 IoCs
pid Process 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeBackupPrivilege 1336 vssvc.exe Token: SeRestorePrivilege 1336 vssvc.exe Token: SeAuditPrivilege 1336 vssvc.exe Token: SeIncreaseQuotaPrivilege 336 wmic.exe Token: SeSecurityPrivilege 336 wmic.exe Token: SeTakeOwnershipPrivilege 336 wmic.exe Token: SeLoadDriverPrivilege 336 wmic.exe Token: SeSystemProfilePrivilege 336 wmic.exe Token: SeSystemtimePrivilege 336 wmic.exe Token: SeProfSingleProcessPrivilege 336 wmic.exe Token: SeIncBasePriorityPrivilege 336 wmic.exe Token: SeCreatePagefilePrivilege 336 wmic.exe Token: SeBackupPrivilege 336 wmic.exe Token: SeRestorePrivilege 336 wmic.exe Token: SeShutdownPrivilege 336 wmic.exe Token: SeDebugPrivilege 336 wmic.exe Token: SeSystemEnvironmentPrivilege 336 wmic.exe Token: SeRemoteShutdownPrivilege 336 wmic.exe Token: SeUndockPrivilege 336 wmic.exe Token: SeManageVolumePrivilege 336 wmic.exe Token: 33 336 wmic.exe Token: 34 336 wmic.exe Token: 35 336 wmic.exe Token: SeIncreaseQuotaPrivilege 1036 wmic.exe Token: SeSecurityPrivilege 1036 wmic.exe Token: SeTakeOwnershipPrivilege 1036 wmic.exe Token: SeLoadDriverPrivilege 1036 wmic.exe Token: SeSystemProfilePrivilege 1036 wmic.exe Token: SeSystemtimePrivilege 1036 wmic.exe Token: SeProfSingleProcessPrivilege 1036 wmic.exe Token: SeIncBasePriorityPrivilege 1036 wmic.exe Token: SeCreatePagefilePrivilege 1036 wmic.exe Token: SeBackupPrivilege 1036 wmic.exe Token: SeRestorePrivilege 1036 wmic.exe Token: SeShutdownPrivilege 1036 wmic.exe Token: SeDebugPrivilege 1036 wmic.exe Token: SeSystemEnvironmentPrivilege 1036 wmic.exe Token: SeRemoteShutdownPrivilege 1036 wmic.exe Token: SeUndockPrivilege 1036 wmic.exe Token: SeManageVolumePrivilege 1036 wmic.exe Token: 33 1036 wmic.exe Token: 34 1036 wmic.exe Token: 35 1036 wmic.exe Token: SeIncreaseQuotaPrivilege 1676 wmic.exe Token: SeSecurityPrivilege 1676 wmic.exe Token: SeTakeOwnershipPrivilege 1676 wmic.exe Token: SeLoadDriverPrivilege 1676 wmic.exe Token: SeSystemProfilePrivilege 1676 wmic.exe Token: SeSystemtimePrivilege 1676 wmic.exe Token: SeProfSingleProcessPrivilege 1676 wmic.exe Token: SeIncBasePriorityPrivilege 1676 wmic.exe Token: SeCreatePagefilePrivilege 1676 wmic.exe Token: SeBackupPrivilege 1676 wmic.exe Token: SeRestorePrivilege 1676 wmic.exe Token: SeShutdownPrivilege 1676 wmic.exe Token: SeDebugPrivilege 1676 wmic.exe Token: SeSystemEnvironmentPrivilege 1676 wmic.exe Token: SeRemoteShutdownPrivilege 1676 wmic.exe Token: SeUndockPrivilege 1676 wmic.exe Token: SeManageVolumePrivilege 1676 wmic.exe Token: 33 1676 wmic.exe Token: 34 1676 wmic.exe Token: 35 1676 wmic.exe -
Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 1884 wrote to memory of 696 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 27 PID 1884 wrote to memory of 696 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 27 PID 1884 wrote to memory of 696 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 27 PID 1884 wrote to memory of 696 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 27 PID 1884 wrote to memory of 336 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 30 PID 1884 wrote to memory of 336 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 30 PID 1884 wrote to memory of 336 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 30 PID 1884 wrote to memory of 336 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 30 PID 1884 wrote to memory of 1188 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 32 PID 1884 wrote to memory of 1188 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 32 PID 1884 wrote to memory of 1188 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 32 PID 1884 wrote to memory of 1188 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 32 PID 1884 wrote to memory of 1036 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 34 PID 1884 wrote to memory of 1036 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 34 PID 1884 wrote to memory of 1036 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 34 PID 1884 wrote to memory of 1036 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 34 PID 1884 wrote to memory of 2024 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 36 PID 1884 wrote to memory of 2024 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 36 PID 1884 wrote to memory of 2024 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 36 PID 1884 wrote to memory of 2024 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 36 PID 1884 wrote to memory of 1676 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 38 PID 1884 wrote to memory of 1676 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 38 PID 1884 wrote to memory of 1676 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 38 PID 1884 wrote to memory of 1676 1884 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe 38 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe"C:\Users\Admin\AppData\Local\Temp\1e406ec30ce6ff9998b5b1ad72232713832889e32cc890c807386831ee8dea9f.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1884 -
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:696
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:336
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C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1188
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1036
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C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:2024
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1676
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1336