Analysis
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max time kernel
153s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20220331-en -
submitted
08-04-2022 10:49
Static task
static1
Behavioral task
behavioral1
Sample
b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe
Resource
win7-20220311-en
Behavioral task
behavioral2
Sample
b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe
Resource
win10v2004-20220331-en
General
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Target
b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe
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Size
669KB
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MD5
e17e00a01d5437d8190298477fd3642a
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SHA1
8d85cdd3888f2f2c83051e22565e87d93d6c9885
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SHA256
b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627
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SHA512
f084cf771e98233ffe090108585c8ccc2d8041d092ead0ed6782836d36039dba9cb34bae7ccb308c11dc6b6b42129aedf8cff6e8a20d9e8afd07acce94a4704c
Malware Config
Extracted
C:\HOW_TO_RECOVER_DATA.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/0x0007000000021e1f-127.dat family_medusalocker behavioral2/files/0x0007000000021e1f-128.dat family_medusalocker -
Executes dropped EXE 1 IoCs
pid Process 3120 svhost.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" b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-157025953-3125636059-437143553-1000\desktop.ini b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.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) \??\M: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\O: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\Q: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\S: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\G: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\H: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\I: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\K: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\V: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\X: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\E: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\R: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\Z: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\T: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\U: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\W: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\Y: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\A: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\J: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\L: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\P: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\B: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\F: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe File opened (read-only) \??\N: b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.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 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe -
Suspicious use of AdjustPrivilegeToken 63 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 3944 wmic.exe Token: SeSecurityPrivilege 3944 wmic.exe Token: SeTakeOwnershipPrivilege 3944 wmic.exe Token: SeLoadDriverPrivilege 3944 wmic.exe Token: SeSystemProfilePrivilege 3944 wmic.exe Token: SeSystemtimePrivilege 3944 wmic.exe Token: SeProfSingleProcessPrivilege 3944 wmic.exe Token: SeIncBasePriorityPrivilege 3944 wmic.exe Token: SeCreatePagefilePrivilege 3944 wmic.exe Token: SeBackupPrivilege 3944 wmic.exe Token: SeRestorePrivilege 3944 wmic.exe Token: SeShutdownPrivilege 3944 wmic.exe Token: SeDebugPrivilege 3944 wmic.exe Token: SeSystemEnvironmentPrivilege 3944 wmic.exe Token: SeRemoteShutdownPrivilege 3944 wmic.exe Token: SeUndockPrivilege 3944 wmic.exe Token: SeManageVolumePrivilege 3944 wmic.exe Token: 33 3944 wmic.exe Token: 34 3944 wmic.exe Token: 35 3944 wmic.exe Token: 36 3944 wmic.exe Token: SeIncreaseQuotaPrivilege 208 wmic.exe Token: SeSecurityPrivilege 208 wmic.exe Token: SeTakeOwnershipPrivilege 208 wmic.exe Token: SeLoadDriverPrivilege 208 wmic.exe Token: SeSystemProfilePrivilege 208 wmic.exe Token: SeSystemtimePrivilege 208 wmic.exe Token: SeProfSingleProcessPrivilege 208 wmic.exe Token: SeIncBasePriorityPrivilege 208 wmic.exe Token: SeCreatePagefilePrivilege 208 wmic.exe Token: SeBackupPrivilege 208 wmic.exe Token: SeRestorePrivilege 208 wmic.exe Token: SeShutdownPrivilege 208 wmic.exe Token: SeDebugPrivilege 208 wmic.exe Token: SeSystemEnvironmentPrivilege 208 wmic.exe Token: SeRemoteShutdownPrivilege 208 wmic.exe Token: SeUndockPrivilege 208 wmic.exe Token: SeManageVolumePrivilege 208 wmic.exe Token: 33 208 wmic.exe Token: 34 208 wmic.exe Token: 35 208 wmic.exe Token: 36 208 wmic.exe Token: SeIncreaseQuotaPrivilege 3984 wmic.exe Token: SeSecurityPrivilege 3984 wmic.exe Token: SeTakeOwnershipPrivilege 3984 wmic.exe Token: SeLoadDriverPrivilege 3984 wmic.exe Token: SeSystemProfilePrivilege 3984 wmic.exe Token: SeSystemtimePrivilege 3984 wmic.exe Token: SeProfSingleProcessPrivilege 3984 wmic.exe Token: SeIncBasePriorityPrivilege 3984 wmic.exe Token: SeCreatePagefilePrivilege 3984 wmic.exe Token: SeBackupPrivilege 3984 wmic.exe Token: SeRestorePrivilege 3984 wmic.exe Token: SeShutdownPrivilege 3984 wmic.exe Token: SeDebugPrivilege 3984 wmic.exe Token: SeSystemEnvironmentPrivilege 3984 wmic.exe Token: SeRemoteShutdownPrivilege 3984 wmic.exe Token: SeUndockPrivilege 3984 wmic.exe Token: SeManageVolumePrivilege 3984 wmic.exe Token: 33 3984 wmic.exe Token: 34 3984 wmic.exe Token: 35 3984 wmic.exe Token: 36 3984 wmic.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4944 wrote to memory of 3944 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 84 PID 4944 wrote to memory of 3944 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 84 PID 4944 wrote to memory of 3944 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 84 PID 4944 wrote to memory of 208 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 86 PID 4944 wrote to memory of 208 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 86 PID 4944 wrote to memory of 208 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 86 PID 4944 wrote to memory of 3984 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 88 PID 4944 wrote to memory of 3984 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 88 PID 4944 wrote to memory of 3984 4944 b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe 88 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.exe"C:\Users\Admin\AppData\Local\Temp\b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627.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:4944 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3944
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:208
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3984
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C:\Users\Admin\AppData\Roaming\svhost.exeC:\Users\Admin\AppData\Roaming\svhost.exe1⤵
- Executes dropped EXE
PID:3120
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
669KB
MD5e17e00a01d5437d8190298477fd3642a
SHA18d85cdd3888f2f2c83051e22565e87d93d6c9885
SHA256b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627
SHA512f084cf771e98233ffe090108585c8ccc2d8041d092ead0ed6782836d36039dba9cb34bae7ccb308c11dc6b6b42129aedf8cff6e8a20d9e8afd07acce94a4704c
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Filesize
669KB
MD5e17e00a01d5437d8190298477fd3642a
SHA18d85cdd3888f2f2c83051e22565e87d93d6c9885
SHA256b15840fb0547fc774f371166adb89cd7a58647d4e379256a2f9806dd5a338627
SHA512f084cf771e98233ffe090108585c8ccc2d8041d092ead0ed6782836d36039dba9cb34bae7ccb308c11dc6b6b42129aedf8cff6e8a20d9e8afd07acce94a4704c