Analysis
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max time kernel
163s -
max time network
117s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
01/02/2022, 15:25
Static task
static1
Behavioral task
behavioral1
Sample
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe
Resource
win10v2004-en-20220112
General
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Target
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe
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Size
661KB
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MD5
19ddac9782acd73f66c5fe040e86ddee
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SHA1
24ceba1e2951cde8e41939da21c6ba3030fc531d
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SHA256
dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95
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SHA512
e7be7472241fdd26db48dbd0311afe821905f6d59dfb56e3dc035944b7346b0767a8af76d110c5f60c0ba0183ca3791e56d9b3c8b9ba887afa111aafc949c1d4
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-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
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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 behavioral1/files/0x000800000001222f-56.dat family_medusalocker behavioral1/files/0x000800000001222f-55.dat family_medusalocker -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Executes dropped EXE 1 IoCs
pid Process 1368 svchostt.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" dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.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: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\O: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\R: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\S: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\T: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\V: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\E: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\H: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\X: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\W: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\K: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\U: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\J: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\L: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\N: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\Y: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\B: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\G: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\M: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\P: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\Q: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\Z: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\A: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe File opened (read-only) \??\F: dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1336 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe -
Suspicious use of AdjustPrivilegeToken 23 IoCs
description pid Process Token: SeBackupPrivilege 1160 vssvc.exe Token: SeRestorePrivilege 1160 vssvc.exe Token: SeAuditPrivilege 1160 vssvc.exe Token: SeIncreaseQuotaPrivilege 1824 wmic.exe Token: SeSecurityPrivilege 1824 wmic.exe Token: SeTakeOwnershipPrivilege 1824 wmic.exe Token: SeLoadDriverPrivilege 1824 wmic.exe Token: SeSystemProfilePrivilege 1824 wmic.exe Token: SeSystemtimePrivilege 1824 wmic.exe Token: SeProfSingleProcessPrivilege 1824 wmic.exe Token: SeIncBasePriorityPrivilege 1824 wmic.exe Token: SeCreatePagefilePrivilege 1824 wmic.exe Token: SeBackupPrivilege 1824 wmic.exe Token: SeRestorePrivilege 1824 wmic.exe Token: SeShutdownPrivilege 1824 wmic.exe Token: SeDebugPrivilege 1824 wmic.exe Token: SeSystemEnvironmentPrivilege 1824 wmic.exe Token: SeRemoteShutdownPrivilege 1824 wmic.exe Token: SeUndockPrivilege 1824 wmic.exe Token: SeManageVolumePrivilege 1824 wmic.exe Token: 33 1824 wmic.exe Token: 34 1824 wmic.exe Token: 35 1824 wmic.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1684 wrote to memory of 1336 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 27 PID 1684 wrote to memory of 1336 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 27 PID 1684 wrote to memory of 1336 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 27 PID 1684 wrote to memory of 1336 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 27 PID 1684 wrote to memory of 1824 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 30 PID 1684 wrote to memory of 1824 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 30 PID 1684 wrote to memory of 1824 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 30 PID 1684 wrote to memory of 1824 1684 dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe 30 PID 1936 wrote to memory of 1368 1936 taskeng.exe 35 PID 1936 wrote to memory of 1368 1936 taskeng.exe 35 PID 1936 wrote to memory of 1368 1936 taskeng.exe 35 PID 1936 wrote to memory of 1368 1936 taskeng.exe 35 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe"C:\Users\Admin\AppData\Local\Temp\dde3c98b6a370fb8d1785f3134a76cb465cd663db20dffe011da57a4de37aa95.exe"1⤵
- Checks whether UAC is enabled
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1684 -
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:1336
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C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1824
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1160
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C:\Windows\system32\taskeng.exetaskeng.exe {CF456C47-6C21-4E0D-81F9-8C46B36712C8} S-1-5-21-3846991908-3261386348-1409841751-1000:VQVVOAJK\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Users\Admin\AppData\Roaming\svchostt.exeC:\Users\Admin\AppData\Roaming\svchostt.exe2⤵
- Executes dropped EXE
PID:1368
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