Analysis
-
max time kernel
136s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
08-08-2021 17:06
General
-
Target
d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532.bin.exe
-
Size
669KB
-
MD5
45de70c85ece8763c685808eea085df4
-
SHA1
c9dd5313a661fd17b154ccb17a36e8399fc933a5
-
SHA256
d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532
-
SHA512
03a1d922711db1afc0a512151371c9a97a7478578c11591109537b1427aeac8b3ac44aa52c83439afe56e20134fd888bcaee1632f6046ce8edf0d99622fb362d
Malware Config
Signatures
-
MedusaLocker
Ransomware with several variants first seen in September 2019.
-
UAC bypass 3 TTPs
-
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
-
Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
-
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Checks whether UAC is enabled 1 TTPs 1 IoCs
-
Drops desktop.ini file(s) 1 IoCs
-
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
-
Suspicious behavior: EnumeratesProcesses 64 IoCs
-
Suspicious use of AdjustPrivilegeToken 64 IoCs
-
Suspicious use of WriteProcessMemory 18 IoCs
-
System policy modification 1 TTPs 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532.bin.exe"C:\Users\Admin\AppData\Local\Temp\d595339cbbf415eca195eb3a0d9a8b6c9ff82a0cf36e4e867f5cef24503bb532.bin.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
-
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
-
-
C:\Windows\SysWOW64\Wbem\wmic.exewmic.exe SHADOWCOPY /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken