Analysis
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max time kernel
174s -
max time network
187s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
01/02/2022, 15:52
Static task
static1
Behavioral task
behavioral1
Sample
0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe
Resource
win10v2004-en-20220112
General
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Target
0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe
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Size
669KB
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MD5
50cb8959fad4a94b2c6927325e46306d
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SHA1
1db0f2a6e3415f49681ee56bba524e3ad4a3810e
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SHA256
0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610
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SHA512
8cf27998b78ea09acfcc137d92763836841b1cbbf0719c47b59797d8f88962eee74c8f8e5e4e4a77d0af50fc7b056cee270204a61cb39796a87935da0467dc07
Malware Config
Extracted
C:\RECOVER_INSTRUCTIONS.html
href="mailto:[email protected]">[email protected]</a><br>
href="mailto:[email protected]">[email protected]</a>
http-equiv="X-UA-Compatible"
Signatures
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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MedusaLocker Payload 2 IoCs
resource yara_rule behavioral2/files/0x000500000002140f-130.dat family_medusalocker behavioral2/files/0x000500000002140f-131.dat family_medusalocker -
Executes dropped EXE 1 IoCs
pid Process 3588 svhost.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-790714498-1549421491-1643397139-1000\desktop.ini 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.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: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\H: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\N: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\V: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\W: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\F: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\G: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\I: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\X: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\Z: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\T: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\J: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\K: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\M: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\P: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\Q: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\R: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\S: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\A: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\E: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\L: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\O: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\U: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe File opened (read-only) \??\Y: 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 MusNotifyIcon.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz MusNotifyIcon.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2300 wmic.exe Token: SeSecurityPrivilege 2300 wmic.exe Token: SeTakeOwnershipPrivilege 2300 wmic.exe Token: SeLoadDriverPrivilege 2300 wmic.exe Token: SeSystemProfilePrivilege 2300 wmic.exe Token: SeSystemtimePrivilege 2300 wmic.exe Token: SeProfSingleProcessPrivilege 2300 wmic.exe Token: SeIncBasePriorityPrivilege 2300 wmic.exe Token: SeCreatePagefilePrivilege 2300 wmic.exe Token: SeBackupPrivilege 2300 wmic.exe Token: SeRestorePrivilege 2300 wmic.exe Token: SeShutdownPrivilege 2300 wmic.exe Token: SeDebugPrivilege 2300 wmic.exe Token: SeSystemEnvironmentPrivilege 2300 wmic.exe Token: SeRemoteShutdownPrivilege 2300 wmic.exe Token: SeUndockPrivilege 2300 wmic.exe Token: SeManageVolumePrivilege 2300 wmic.exe Token: 33 2300 wmic.exe Token: 34 2300 wmic.exe Token: 35 2300 wmic.exe Token: 36 2300 wmic.exe Token: SeIncreaseQuotaPrivilege 3564 wmic.exe Token: SeSecurityPrivilege 3564 wmic.exe Token: SeTakeOwnershipPrivilege 3564 wmic.exe Token: SeLoadDriverPrivilege 3564 wmic.exe Token: SeSystemProfilePrivilege 3564 wmic.exe Token: SeSystemtimePrivilege 3564 wmic.exe Token: SeProfSingleProcessPrivilege 3564 wmic.exe Token: SeIncBasePriorityPrivilege 3564 wmic.exe Token: SeCreatePagefilePrivilege 3564 wmic.exe Token: SeBackupPrivilege 3564 wmic.exe Token: SeRestorePrivilege 3564 wmic.exe Token: SeShutdownPrivilege 3564 wmic.exe Token: SeDebugPrivilege 3564 wmic.exe Token: SeSystemEnvironmentPrivilege 3564 wmic.exe Token: SeRemoteShutdownPrivilege 3564 wmic.exe Token: SeUndockPrivilege 3564 wmic.exe Token: SeManageVolumePrivilege 3564 wmic.exe Token: 33 3564 wmic.exe Token: 34 3564 wmic.exe Token: 35 3564 wmic.exe Token: 36 3564 wmic.exe Token: SeIncreaseQuotaPrivilege 432 wmic.exe Token: SeSecurityPrivilege 432 wmic.exe Token: SeTakeOwnershipPrivilege 432 wmic.exe Token: SeLoadDriverPrivilege 432 wmic.exe Token: SeSystemProfilePrivilege 432 wmic.exe Token: SeSystemtimePrivilege 432 wmic.exe Token: SeProfSingleProcessPrivilege 432 wmic.exe Token: SeIncBasePriorityPrivilege 432 wmic.exe Token: SeCreatePagefilePrivilege 432 wmic.exe Token: SeBackupPrivilege 432 wmic.exe Token: SeRestorePrivilege 432 wmic.exe Token: SeShutdownPrivilege 432 wmic.exe Token: SeDebugPrivilege 432 wmic.exe Token: SeSystemEnvironmentPrivilege 432 wmic.exe Token: SeRemoteShutdownPrivilege 432 wmic.exe Token: SeUndockPrivilege 432 wmic.exe Token: SeManageVolumePrivilege 432 wmic.exe Token: 33 432 wmic.exe Token: 34 432 wmic.exe Token: 35 432 wmic.exe Token: 36 432 wmic.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3440 wrote to memory of 2300 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 55 PID 3440 wrote to memory of 2300 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 55 PID 3440 wrote to memory of 2300 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 55 PID 3440 wrote to memory of 3564 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 61 PID 3440 wrote to memory of 3564 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 61 PID 3440 wrote to memory of 3564 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 61 PID 3440 wrote to memory of 432 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 63 PID 3440 wrote to memory of 432 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 63 PID 3440 wrote to memory of 432 3440 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe 63 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe"C:\Users\Admin\AppData\Local\Temp\0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe"1⤵
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:3440 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2300
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3564
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:432
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C:\Windows\system32\MusNotifyIcon.exe%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 131⤵
- Checks processor information in registry
PID:712
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k wusvcs -p1⤵PID:3660
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:3588