Overview
overview
10Static
static
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
7Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
9Ransomware...KB.exe
windows10-ltsc_2021-x64
9Ransomware...KB.ps1
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Ransomware...KB.msi
windows10-ltsc_2021-x64
10Ransomware...KB.exe
windows10-ltsc_2021-x64
10Resubmissions
31/03/2025, 00:22
250331-apdw1ssjs8 1028/03/2025, 22:52
250328-2tfd7avl15 1025/03/2025, 14:57
250325-sb3mbsxxht 10Analysis
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max time kernel
500s -
max time network
466s -
platform
windows10-ltsc_2021_x64 -
resource
win10ltsc2021-20250314-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system -
submitted
31/03/2025, 00:22
Static task
static1
Behavioral task
behavioral1
Sample
RansomwareSamples/Avaddon_09_06_2020_1054KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral2
Sample
RansomwareSamples/Avos_18_07_2021_403KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral3
Sample
RansomwareSamples/Babik_04_01_2021_31KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral4
Sample
RansomwareSamples/Babuk_20_04_2021_79KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral5
Sample
RansomwareSamples/BlackKingdom_23_03_2021_12460KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral6
Sample
RansomwareSamples/BlackMatter_02_08_2021_67KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral7
Sample
RansomwareSamples/Conti_22_12_2020_186KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral8
Sample
RansomwareSamples/Cuba_08_03_2021_1130KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral9
Sample
RansomwareSamples/DarkSide_01_05_2021_30KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral10
Sample
RansomwareSamples/DarkSide_16_01_2021_59KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral11
Sample
RansomwareSamples/DarkSide_18_11_2020_17KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral12
Sample
RansomwareSamples/DearCry_13_03_2021_1292KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral13
Sample
RansomwareSamples/Hades_29_03_2021_1909KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral14
Sample
RansomwareSamples/Hive_17_07_2021_808KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral15
Sample
RansomwareSamples/LockBit_14_02_2021_146KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral16
Sample
RansomwareSamples/MAKOP_27_10_2020_115KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral17
Sample
RansomwareSamples/MedusaLocker_24_04_2020_661KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral18
Sample
RansomwareSamples/MountLocker_20_11_2020_200KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral19
Sample
RansomwareSamples/Nefilim_31_08_2020_3061KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral20
Sample
RansomwareSamples/Nemty_03_02_2021_124KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral21
Sample
RansomwareSamples/NetWalker_19_10_2020_903KB.ps1
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral22
Sample
RansomwareSamples/Phoenix_29_03_2021_1930KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral23
Sample
RansomwareSamples/PwndLocker_04_03_2020_17KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral24
Sample
RansomwareSamples/Pysa_08_04_2021_500KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral25
Sample
RansomwareSamples/REvil_07_04_2021_121KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral26
Sample
RansomwareSamples/REvil_08_04_2021_121KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral27
Sample
RansomwareSamples/Ragnar_11_02_2020_40KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral28
Sample
RansomwareSamples/RansomEXX_14_12_2020_156KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral29
Sample
RansomwareSamples/Ranzy_20_11_2020_138KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral30
Sample
RansomwareSamples/Ryuk_21_03_2021_274KB.exe
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral31
Sample
RansomwareSamples/Sekhmet_30_03_2020_364KB.msi
Resource
win10ltsc2021-20250314-en
Behavioral task
behavioral32
Sample
RansomwareSamples/Sodinokibi_04_07_2019_253KB.exe
Resource
win10ltsc2021-20250314-en
General
-
Target
RansomwareSamples/MedusaLocker_24_04_2020_661KB.exe
-
Size
661KB
-
MD5
19ddac9782acd73f66c5fe040e86ddee
-
SHA1
24ceba1e2951cde8e41939da21c6ba3030fc531d
-
SHA256
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
-
SHA512
e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4
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SSDEEP
12288:vN3K5e8nbwFigzk6VVMqX8aQNRMcauV9B/rtiPnA40Q8:hCXbwFigzkQVdXvlcayDh49
Malware Config
Extracted
C:\Recovery\WindowsRE\HOW_TO_RECOVER_DATA.html
href="mailto:[email protected]">[email protected]</a><br>
href="mailto:[email protected]">[email protected]</a>
http-equiv="X-UA-Compatible"
Signatures
-
MedusaLocker
Ransomware with several variants first seen in September 2019.
-
MedusaLocker payload 1 IoCs
resource yara_rule behavioral17/files/0x000400000002696d-537.dat family_medusalocker -
Medusalocker family
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UAC bypass 3 TTPs 2 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" MedusaLocker_24_04_2020_661KB.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" MedusaLocker_24_04_2020_661KB.exe -
Renames multiple (181) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
pid Process 4104 svchostt.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Checks whether UAC is enabled 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" MedusaLocker_24_04_2020_661KB.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) \??\A: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\H: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\L: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\S: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\W: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\X: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\J: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\M: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\P: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\U: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Y: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\F: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\D: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\I: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\N: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\R: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\T: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\V: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\B: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\G: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\K: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\O: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Q: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Z: MedusaLocker_24_04_2020_661KB.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language MedusaLocker_24_04_2020_661KB.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language wmic.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchostt.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe 2792 wmic.exe 2792 wmic.exe 2792 wmic.exe 2792 wmic.exe 5608 MedusaLocker_24_04_2020_661KB.exe 5608 MedusaLocker_24_04_2020_661KB.exe -
Suspicious use of AdjustPrivilegeToken 22 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 2792 wmic.exe Token: SeSecurityPrivilege 2792 wmic.exe Token: SeTakeOwnershipPrivilege 2792 wmic.exe Token: SeLoadDriverPrivilege 2792 wmic.exe Token: SeSystemProfilePrivilege 2792 wmic.exe Token: SeSystemtimePrivilege 2792 wmic.exe Token: SeProfSingleProcessPrivilege 2792 wmic.exe Token: SeIncBasePriorityPrivilege 2792 wmic.exe Token: SeCreatePagefilePrivilege 2792 wmic.exe Token: SeBackupPrivilege 2792 wmic.exe Token: SeRestorePrivilege 2792 wmic.exe Token: SeShutdownPrivilege 2792 wmic.exe Token: SeDebugPrivilege 2792 wmic.exe Token: SeSystemEnvironmentPrivilege 2792 wmic.exe Token: SeRemoteShutdownPrivilege 2792 wmic.exe Token: SeUndockPrivilege 2792 wmic.exe Token: SeManageVolumePrivilege 2792 wmic.exe Token: 33 2792 wmic.exe Token: 34 2792 wmic.exe Token: 35 2792 wmic.exe Token: 36 2792 wmic.exe Token: SeAuditPrivilege 3104 svchost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5608 wrote to memory of 2792 5608 MedusaLocker_24_04_2020_661KB.exe 83 PID 5608 wrote to memory of 2792 5608 MedusaLocker_24_04_2020_661KB.exe 83 PID 5608 wrote to memory of 2792 5608 MedusaLocker_24_04_2020_661KB.exe 83 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" MedusaLocker_24_04_2020_661KB.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" MedusaLocker_24_04_2020_661KB.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" MedusaLocker_24_04_2020_661KB.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MedusaLocker_24_04_2020_661KB.exe"C:\Users\Admin\AppData\Local\Temp\RansomwareSamples\MedusaLocker_24_04_2020_661KB.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Enumerates connected drives
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:5608 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2792
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3104
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C:\Users\Admin\AppData\Roaming\svchostt.exe"C:\Users\Admin\AppData\Roaming\svchostt.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4104
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
2Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
27KB
MD577caeb6e09c54e1d735c19337efd11a4
SHA19849d0a7e867c5cf688e00daae039b5807bb0de8
SHA2566f0160f04a0b454e3363c923e0eba81c2adb674395fd639f44c8a03566280608
SHA51204dd843d5ca410ebd26087b3e6bb77cce7e4e69b59c847781e8bf235b9bb32cc04af415317802b074334990c588e132881a4a1e396d6b628d3e5238f78676ff4
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Filesize
661KB
MD519ddac9782acd73f66c5fe040e86ddee
SHA124ceba1e2951cde8e41939da21c6ba3030fc531d
SHA256dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
SHA512e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4