Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
10/11/2024, 04:22
General
- Target 2024-11-10_2d63cdb3d43049f14fc6d57e10928cf3_cryptolocker.exe
- Size 64KB
- Sample241110-ezecraypht
- SHA256 67e9b2d364c1ae70d3cae51a68cf735e1991e017e9a97ed43859b8b4661cdcf6
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-11-10_2d63cdb3d43049f14fc6d57e10928cf3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-10_2d63cdb3d43049f14fc6d57e10928cf3_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
asih.exe
memory/644-19-0x0000000002080000-0x0000000002086000-memory.dmp
memory/644-25-0x0000000002050000-0x0000000002056000-memory.dmp
memory/644-26-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4116-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4116-1-0x00000000007D0000-0x00000000007D6000-memory.dmp
memory/4116-2-0x00000000007D0000-0x00000000007D6000-memory.dmp
memory/4116-3-0x00000000007F0000-0x00000000007F6000-memory.dmp
memory/4116-17-0x0000000000500000-0x000000000050F311-memory.dmp