Analysis
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max time kernel
176s -
max time network
166s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
06/03/2022, 06:51
Static task
static1
Behavioral task
behavioral1
Sample
8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe
Resource
win7-20220223-en
Behavioral task
behavioral2
Sample
8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe
Resource
win10v2004-en-20220113
General
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Target
8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe
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Size
678KB
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MD5
cd5e831586e171b130dd719e73e13f62
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SHA1
baf8da95632066364ff74df394bc2979c49e1993
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SHA256
8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29
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SHA512
f4d615a45d45b3630c9d2840dec3cd710d3dcb68ed60e74248e0026c99c62f4c3fbb2ae2b354d6492cc2b18c1b6cbc6eea8137100a42d591b07d191184f33ee0
Malware Config
Extracted
C:\Recovery_Instructions.html
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/0x000500000001e7bd-130.dat family_medusalocker behavioral2/files/0x000500000001e7bd-131.dat family_medusalocker -
Executes dropped EXE 1 IoCs
pid Process 4956 svhost.exe -
Modifies extensions of user files 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\MergePop.png => C:\Users\Admin\Pictures\MergePop.png.divsouth 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File renamed C:\Users\Admin\Pictures\UseStep.raw => C:\Users\Admin\Pictures\UseStep.raw.divsouth 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.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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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-1346565761-3498240568-4147300184-1000\desktop.ini 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.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) \??\E: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\K: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\M: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\N: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\S: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\W: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\X: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\Y: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\A: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\I: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\L: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\O: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\P: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\R: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\H: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\J: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\T: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\Z: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\B: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\F: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\G: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\Q: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\U: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe File opened (read-only) \??\V: 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.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
pid Process 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2564 wmic.exe Token: SeSecurityPrivilege 2564 wmic.exe Token: SeTakeOwnershipPrivilege 2564 wmic.exe Token: SeLoadDriverPrivilege 2564 wmic.exe Token: SeSystemProfilePrivilege 2564 wmic.exe Token: SeSystemtimePrivilege 2564 wmic.exe Token: SeProfSingleProcessPrivilege 2564 wmic.exe Token: SeIncBasePriorityPrivilege 2564 wmic.exe Token: SeCreatePagefilePrivilege 2564 wmic.exe Token: SeBackupPrivilege 2564 wmic.exe Token: SeRestorePrivilege 2564 wmic.exe Token: SeShutdownPrivilege 2564 wmic.exe Token: SeDebugPrivilege 2564 wmic.exe Token: SeSystemEnvironmentPrivilege 2564 wmic.exe Token: SeRemoteShutdownPrivilege 2564 wmic.exe Token: SeUndockPrivilege 2564 wmic.exe Token: SeManageVolumePrivilege 2564 wmic.exe Token: 33 2564 wmic.exe Token: 34 2564 wmic.exe Token: 35 2564 wmic.exe Token: 36 2564 wmic.exe Token: SeIncreaseQuotaPrivilege 2724 wmic.exe Token: SeSecurityPrivilege 2724 wmic.exe Token: SeTakeOwnershipPrivilege 2724 wmic.exe Token: SeLoadDriverPrivilege 2724 wmic.exe Token: SeSystemProfilePrivilege 2724 wmic.exe Token: SeSystemtimePrivilege 2724 wmic.exe Token: SeProfSingleProcessPrivilege 2724 wmic.exe Token: SeIncBasePriorityPrivilege 2724 wmic.exe Token: SeCreatePagefilePrivilege 2724 wmic.exe Token: SeBackupPrivilege 2724 wmic.exe Token: SeRestorePrivilege 2724 wmic.exe Token: SeShutdownPrivilege 2724 wmic.exe Token: SeDebugPrivilege 2724 wmic.exe Token: SeSystemEnvironmentPrivilege 2724 wmic.exe Token: SeRemoteShutdownPrivilege 2724 wmic.exe Token: SeUndockPrivilege 2724 wmic.exe Token: SeManageVolumePrivilege 2724 wmic.exe Token: 33 2724 wmic.exe Token: 34 2724 wmic.exe Token: 35 2724 wmic.exe Token: 36 2724 wmic.exe Token: SeIncreaseQuotaPrivilege 1288 wmic.exe Token: SeSecurityPrivilege 1288 wmic.exe Token: SeTakeOwnershipPrivilege 1288 wmic.exe Token: SeLoadDriverPrivilege 1288 wmic.exe Token: SeSystemProfilePrivilege 1288 wmic.exe Token: SeSystemtimePrivilege 1288 wmic.exe Token: SeProfSingleProcessPrivilege 1288 wmic.exe Token: SeIncBasePriorityPrivilege 1288 wmic.exe Token: SeCreatePagefilePrivilege 1288 wmic.exe Token: SeBackupPrivilege 1288 wmic.exe Token: SeRestorePrivilege 1288 wmic.exe Token: SeShutdownPrivilege 1288 wmic.exe Token: SeDebugPrivilege 1288 wmic.exe Token: SeSystemEnvironmentPrivilege 1288 wmic.exe Token: SeRemoteShutdownPrivilege 1288 wmic.exe Token: SeUndockPrivilege 1288 wmic.exe Token: SeManageVolumePrivilege 1288 wmic.exe Token: 33 1288 wmic.exe Token: 34 1288 wmic.exe Token: 35 1288 wmic.exe Token: 36 1288 wmic.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1644 wrote to memory of 2564 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 79 PID 1644 wrote to memory of 2564 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 79 PID 1644 wrote to memory of 2564 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 79 PID 1644 wrote to memory of 2724 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 83 PID 1644 wrote to memory of 2724 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 83 PID 1644 wrote to memory of 2724 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 83 PID 1644 wrote to memory of 1288 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 85 PID 1644 wrote to memory of 1288 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 85 PID 1644 wrote to memory of 1288 1644 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe 85 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" 8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe"C:\Users\Admin\AppData\Local\Temp\8e32be81036161928f5bf24d75335bda797ca91dee0730c9c1b62d88f9c24f29.exe"1⤵
- Modifies extensions of user files
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1644 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2564
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2724
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1288
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:4956