Analysis
-
max time kernel
128s -
max time network
135s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
08-08-2021 17:02
General
-
Target
a25c0227728878c386ab6dba139976cb10e853dd3cd1eb3623f236ee8e1df212.bin.exe
-
Size
678KB
-
MD5
ff1b2e9d3e7af50b302b090a15d15c76
-
SHA1
3bae4caa7c4ecca659aec342472fe49b3c0b2131
-
SHA256
a25c0227728878c386ab6dba139976cb10e853dd3cd1eb3623f236ee8e1df212
-
SHA512
d3527aa4e7d4a8fbd0565ea8c0d26dc7e9ff0f294efa5260b9e964e5943782eb697b964cb684ad9008a717b93cfd120ec1337acb0ecbefef0931313f7b88e881
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 4 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\a25c0227728878c386ab6dba139976cb10e853dd3cd1eb3623f236ee8e1df212.bin.exe"C:\Users\Admin\AppData\Local\Temp\a25c0227728878c386ab6dba139976cb10e853dd3cd1eb3623f236ee8e1df212.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