Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
10/11/2024, 04:24
General
- Target 2024-11-10_64306135c8040ec8c2101e1f0bd6dc61_cryptolocker.exe
- Size 62KB
- Sample241110-e1t5lazbnk
- SHA256 3a35de450f89eb21217d0a52df01dc796fd43bf5fb02c479d6b7b8503327209f
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_64306135c8040ec8c2101e1f0bd6dc61_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-10_64306135c8040ec8c2101e1f0bd6dc61_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/3088-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3088-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3088-2-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3088-3-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/3088-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3736-19-0x0000000002070000-0x0000000002076000-memory.dmp
memory/3736-25-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/3736-26-0x0000000000500000-0x0000000000510000-memory.dmp