Overview
overview
10Static
static
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.ps1
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.msi
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
10Ransomware...KB.ps1
windows10-2004-x64
10Ransomware...KB.exe
windows10-2004-x64
8Ransomware...KB.exe
windows10-2004-x64
10Resubmissions
28-07-2024 16:38
240728-t5tryssgmm 1007-07-2024 14:07
240707-rfgd8atekm 1007-07-2024 14:07
240707-re689awdpe 1013-09-2022 17:54
220913-wg1lpsgbg7 10Analysis
-
max time kernel
1804s -
max time network
1688s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
13-09-2022 17:54
Static task
static1
Behavioral task
behavioral1
Sample
RansomwareSamples/Babuk_20_04_2021_79KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral2
Sample
RansomwareSamples/BlackKingdom_23_03_2021_12460KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral3
Sample
RansomwareSamples/BlackMatter_02_08_2021_67KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral4
Sample
RansomwareSamples/Conti_22_12_2020_186KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral5
Sample
RansomwareSamples/Cuba_08_03_2021_1130KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral6
Sample
RansomwareSamples/DarkSide_01_05_2021_30KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral7
Sample
RansomwareSamples/DarkSide_16_01_2021_59KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral8
Sample
RansomwareSamples/DarkSide_18_11_2020_17KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral9
Sample
RansomwareSamples/DearCry_13_03_2021_1292KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral10
Sample
RansomwareSamples/Hades_29_03_2021_1909KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral11
Sample
RansomwareSamples/Hive_17_07_2021_808KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral12
Sample
RansomwareSamples/LockBit_14_02_2021_146KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral13
Sample
RansomwareSamples/MAKOP_27_10_2020_115KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral14
Sample
RansomwareSamples/MedusaLocker_24_04_2020_661KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral15
Sample
RansomwareSamples/MountLocker_20_11_2020_200KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral16
Sample
RansomwareSamples/Nefilim_31_08_2020_3061KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral17
Sample
RansomwareSamples/Nemty_03_02_2021_124KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral18
Sample
RansomwareSamples/NetWalker_19_10_2020_903KB.ps1
Resource
win10v2004-20220812-en
Behavioral task
behavioral19
Sample
RansomwareSamples/Phoenix_29_03_2021_1930KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral20
Sample
RansomwareSamples/PwndLocker_04_03_2020_17KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral21
Sample
RansomwareSamples/Pysa_08_04_2021_500KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral22
Sample
RansomwareSamples/REvil_07_04_2021_121KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral23
Sample
RansomwareSamples/REvil_08_04_2021_121KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral24
Sample
RansomwareSamples/Ragnar_11_02_2020_40KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral25
Sample
RansomwareSamples/RansomEXX_14_12_2020_156KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral26
Sample
RansomwareSamples/Ranzy_20_11_2020_138KB.exe
Resource
win10v2004-20220901-en
Behavioral task
behavioral27
Sample
RansomwareSamples/Ryuk_21_03_2021_274KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral28
Sample
RansomwareSamples/Sekhmet_30_03_2020_364KB.msi
Resource
win10v2004-20220812-en
Behavioral task
behavioral29
Sample
RansomwareSamples/Sodinokibi_04_07_2019_253KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral30
Sample
RansomwareSamples/SunCrypt_26_01_2021_1422KB.ps1
Resource
win10v2004-20220901-en
Behavioral task
behavioral31
Sample
RansomwareSamples/Thanos_23_03_2021_91KB.exe
Resource
win10v2004-20220812-en
Behavioral task
behavioral32
Sample
RansomwareSamples/Zeppelin_08_03_2021_813KB.exe
Resource
win10v2004-20220812-en
General
-
Target
RansomwareSamples/MedusaLocker_24_04_2020_661KB.exe
-
Size
661KB
-
MD5
19ddac9782acd73f66c5fe040e86ddee
-
SHA1
24ceba1e2951cde8e41939da21c6ba3030fc531d
-
SHA256
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
-
SHA512
e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4
-
SSDEEP
12288:vN3K5e8nbwFigzk6VVMqX8aQNRMcauV9B/rtiPnA40Q8:hCXbwFigzkQVdXvlcayDh49
Malware Config
Extracted
C:\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 3 IoCs
resource yara_rule behavioral14/files/0x0006000000022e8d-133.dat family_medusalocker behavioral14/files/0x0006000000022e8d-134.dat family_medusalocker behavioral14/files/0x0006000000022e8d-135.dat family_medusalocker -
description ioc Process 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\EnableLUA = "0" MedusaLocker_24_04_2020_661KB.exe -
Executes dropped EXE 2 IoCs
pid Process 2576 svchostt.exe 1336 svchostt.exe -
Modifies extensions of user files 9 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\NewJoin.tiff => C:\Users\Admin\Pictures\NewJoin.tiff.encrypted MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\DismountPush.tiff => C:\Users\Admin\Pictures\DismountPush.tiff.encrypted MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\ExitStop.crw => C:\Users\Admin\Pictures\ExitStop.crw.encrypted MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\MountSkip.crw => C:\Users\Admin\Pictures\MountSkip.crw.encrypted MedusaLocker_24_04_2020_661KB.exe File opened for modification C:\Users\Admin\Pictures\NewJoin.tiff MedusaLocker_24_04_2020_661KB.exe File opened for modification C:\Users\Admin\Pictures\DismountPush.tiff MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\ReceiveExpand.tif => C:\Users\Admin\Pictures\ReceiveExpand.tif.encrypted MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\RenameUndo.crw => C:\Users\Admin\Pictures\RenameUndo.crw.encrypted MedusaLocker_24_04_2020_661KB.exe File renamed C:\Users\Admin\Pictures\ResizeExit.crw => C:\Users\Admin\Pictures\ResizeExit.crw.encrypted MedusaLocker_24_04_2020_661KB.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
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) \??\I: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\T: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Z: MedusaLocker_24_04_2020_661KB.exe 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) \??\N: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Q: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\R: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\S: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\V: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\E: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\K: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\G: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\M: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\O: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\P: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\Y: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\B: MedusaLocker_24_04_2020_661KB.exe File opened (read-only) \??\F: 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) \??\U: MedusaLocker_24_04_2020_661KB.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe 4904 MedusaLocker_24_04_2020_661KB.exe -
Suspicious use of AdjustPrivilegeToken 22 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1676 wmic.exe Token: SeSecurityPrivilege 1676 wmic.exe Token: SeTakeOwnershipPrivilege 1676 wmic.exe Token: SeLoadDriverPrivilege 1676 wmic.exe Token: SeSystemProfilePrivilege 1676 wmic.exe Token: SeSystemtimePrivilege 1676 wmic.exe Token: SeProfSingleProcessPrivilege 1676 wmic.exe Token: SeIncBasePriorityPrivilege 1676 wmic.exe Token: SeCreatePagefilePrivilege 1676 wmic.exe Token: SeBackupPrivilege 1676 wmic.exe Token: SeRestorePrivilege 1676 wmic.exe Token: SeShutdownPrivilege 1676 wmic.exe Token: SeDebugPrivilege 1676 wmic.exe Token: SeSystemEnvironmentPrivilege 1676 wmic.exe Token: SeRemoteShutdownPrivilege 1676 wmic.exe Token: SeUndockPrivilege 1676 wmic.exe Token: SeManageVolumePrivilege 1676 wmic.exe Token: 33 1676 wmic.exe Token: 34 1676 wmic.exe Token: 35 1676 wmic.exe Token: 36 1676 wmic.exe Token: SeAuditPrivilege 4832 svchost.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4904 wrote to memory of 1676 4904 MedusaLocker_24_04_2020_661KB.exe 82 PID 4904 wrote to memory of 1676 4904 MedusaLocker_24_04_2020_661KB.exe 82 PID 4904 wrote to memory of 1676 4904 MedusaLocker_24_04_2020_661KB.exe 82 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" MedusaLocker_24_04_2020_661KB.exe 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
Processes
-
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
- Modifies extensions of user files
- Checks whether UAC is enabled
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4904 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1676
-
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4832
-
C:\Users\Admin\AppData\Roaming\svchostt.exeC:\Users\Admin\AppData\Roaming\svchostt.exe1⤵
- Executes dropped EXE
PID:2576
-
C:\Users\Admin\AppData\Roaming\svchostt.exeC:\Users\Admin\AppData\Roaming\svchostt.exe1⤵
- Executes dropped EXE
PID:1336
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
661KB
MD519ddac9782acd73f66c5fe040e86ddee
SHA124ceba1e2951cde8e41939da21c6ba3030fc531d
SHA256dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
SHA512e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4
-
Filesize
661KB
MD519ddac9782acd73f66c5fe040e86ddee
SHA124ceba1e2951cde8e41939da21c6ba3030fc531d
SHA256dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
SHA512e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4
-
Filesize
661KB
MD519ddac9782acd73f66c5fe040e86ddee
SHA124ceba1e2951cde8e41939da21c6ba3030fc531d
SHA256dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
SHA512e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4