Analysis
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max time kernel
178s -
max time network
183s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
01-02-2022 15:22
Static task
static1
Behavioral task
behavioral1
Sample
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe
Resource
win10v2004-en-20220112
General
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Target
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe
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Size
669KB
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MD5
f0035e2baab6cf3fc4a144168e089d4c
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SHA1
76fd02a4b42e4fa80f516fceea81d22011e08ca5
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SHA256
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb
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SHA512
7d260e3e9404a29395f8252c1a88637ea174f69baf4675587c12be937de73e3ed2c9c4be7a9869c6c6240e3004427e8a08567819445446c9b72b7517d4e9d9a1
Malware Config
Extracted
C:\HOW_TO_RECOVER_DATA.html
http-equiv="X-UA-Compatible"
http://meyerweb.com/eric/tools/css/reset/
Signatures
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MedusaLocker
Ransomware with several variants first seen in September 2019.
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MedusaLocker Payload 2 IoCs
Processes:
resource yara_rule behavioral2/files/0x000a000000022103-187.dat family_medusalocker behavioral2/files/0x000a000000022103-188.dat family_medusalocker -
Executes dropped EXE 1 IoCs
Processes:
svhost.exepid Process 3268 svhost.exe -
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe -
Drops desktop.ini file(s) 1 IoCs
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exedescription ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-790714498-1549421491-1643397139-1000\desktop.ini f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exedescription ioc Process File opened (read-only) \??\A: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\B: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\G: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\K: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\R: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\T: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\X: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\E: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\F: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\W: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\Y: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\H: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\L: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\U: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\Z: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\I: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\J: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\M: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\N: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\O: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\P: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\Q: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\S: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe File opened (read-only) \??\V: f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exepid Process 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
Processes:
wmic.exewmic.exewmic.exedescription pid Process Token: SeIncreaseQuotaPrivilege 4064 wmic.exe Token: SeSecurityPrivilege 4064 wmic.exe Token: SeTakeOwnershipPrivilege 4064 wmic.exe Token: SeLoadDriverPrivilege 4064 wmic.exe Token: SeSystemProfilePrivilege 4064 wmic.exe Token: SeSystemtimePrivilege 4064 wmic.exe Token: SeProfSingleProcessPrivilege 4064 wmic.exe Token: SeIncBasePriorityPrivilege 4064 wmic.exe Token: SeCreatePagefilePrivilege 4064 wmic.exe Token: SeBackupPrivilege 4064 wmic.exe Token: SeRestorePrivilege 4064 wmic.exe Token: SeShutdownPrivilege 4064 wmic.exe Token: SeDebugPrivilege 4064 wmic.exe Token: SeSystemEnvironmentPrivilege 4064 wmic.exe Token: SeRemoteShutdownPrivilege 4064 wmic.exe Token: SeUndockPrivilege 4064 wmic.exe Token: SeManageVolumePrivilege 4064 wmic.exe Token: 33 4064 wmic.exe Token: 34 4064 wmic.exe Token: 35 4064 wmic.exe Token: 36 4064 wmic.exe Token: SeIncreaseQuotaPrivilege 3728 wmic.exe Token: SeSecurityPrivilege 3728 wmic.exe Token: SeTakeOwnershipPrivilege 3728 wmic.exe Token: SeLoadDriverPrivilege 3728 wmic.exe Token: SeSystemProfilePrivilege 3728 wmic.exe Token: SeSystemtimePrivilege 3728 wmic.exe Token: SeProfSingleProcessPrivilege 3728 wmic.exe Token: SeIncBasePriorityPrivilege 3728 wmic.exe Token: SeCreatePagefilePrivilege 3728 wmic.exe Token: SeBackupPrivilege 3728 wmic.exe Token: SeRestorePrivilege 3728 wmic.exe Token: SeShutdownPrivilege 3728 wmic.exe Token: SeDebugPrivilege 3728 wmic.exe Token: SeSystemEnvironmentPrivilege 3728 wmic.exe Token: SeRemoteShutdownPrivilege 3728 wmic.exe Token: SeUndockPrivilege 3728 wmic.exe Token: SeManageVolumePrivilege 3728 wmic.exe Token: 33 3728 wmic.exe Token: 34 3728 wmic.exe Token: 35 3728 wmic.exe Token: 36 3728 wmic.exe Token: SeIncreaseQuotaPrivilege 556 wmic.exe Token: SeSecurityPrivilege 556 wmic.exe Token: SeTakeOwnershipPrivilege 556 wmic.exe Token: SeLoadDriverPrivilege 556 wmic.exe Token: SeSystemProfilePrivilege 556 wmic.exe Token: SeSystemtimePrivilege 556 wmic.exe Token: SeProfSingleProcessPrivilege 556 wmic.exe Token: SeIncBasePriorityPrivilege 556 wmic.exe Token: SeCreatePagefilePrivilege 556 wmic.exe Token: SeBackupPrivilege 556 wmic.exe Token: SeRestorePrivilege 556 wmic.exe Token: SeShutdownPrivilege 556 wmic.exe Token: SeDebugPrivilege 556 wmic.exe Token: SeSystemEnvironmentPrivilege 556 wmic.exe Token: SeRemoteShutdownPrivilege 556 wmic.exe Token: SeUndockPrivilege 556 wmic.exe Token: SeManageVolumePrivilege 556 wmic.exe Token: 33 556 wmic.exe Token: 34 556 wmic.exe Token: 35 556 wmic.exe Token: 36 556 wmic.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exedescription pid Process procid_target PID 2900 wrote to memory of 4064 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 57 PID 2900 wrote to memory of 4064 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 57 PID 2900 wrote to memory of 4064 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 57 PID 2900 wrote to memory of 3728 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 60 PID 2900 wrote to memory of 3728 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 60 PID 2900 wrote to memory of 3728 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 60 PID 2900 wrote to memory of 556 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 62 PID 2900 wrote to memory of 556 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 62 PID 2900 wrote to memory of 556 2900 f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe 62 -
System policy modification 1 TTPs 3 IoCs
Processes:
f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.exe"C:\Users\Admin\AppData\Local\Temp\f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb.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:2900 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4064
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3728
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:556
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:3268
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
f0035e2baab6cf3fc4a144168e089d4c
SHA176fd02a4b42e4fa80f516fceea81d22011e08ca5
SHA256f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb
SHA5127d260e3e9404a29395f8252c1a88637ea174f69baf4675587c12be937de73e3ed2c9c4be7a9869c6c6240e3004427e8a08567819445446c9b72b7517d4e9d9a1
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MD5
f0035e2baab6cf3fc4a144168e089d4c
SHA176fd02a4b42e4fa80f516fceea81d22011e08ca5
SHA256f31b9f121c6c4fadaa44b804ec2a891c71b20439d043ea789b77873fa3ab0abb
SHA5127d260e3e9404a29395f8252c1a88637ea174f69baf4675587c12be937de73e3ed2c9c4be7a9869c6c6240e3004427e8a08567819445446c9b72b7517d4e9d9a1