Analysis
- max time kernel
148s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
01/09/2024, 00:35
General
- Target 2024-09-01_982c136aa3257efc612e19868769c747_cryptolocker.exe
- Size 37KB
- Sample240901-axgymsvdph
- SHA256 87ec51c4c1882077ece140246cb5ba789bf792dbed4ddee21ae14e50f5860676
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\2024-09-01_982c136aa3257efc612e19868769c747_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-01_982c136aa3257efc612e19868769c747_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
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Downloads
asih.exe
memory/2356-19-0x0000000000550000-0x0000000000556000-memory.dmp
memory/2356-20-0x0000000001FE0000-0x0000000001FE6000-memory.dmp
memory/2356-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2908-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2908-1-0x00000000007E0000-0x00000000007E6000-memory.dmp
memory/2908-2-0x00000000007E0000-0x00000000007E6000-memory.dmp
memory/2908-3-0x0000000002220000-0x0000000002226000-memory.dmp
memory/2908-17-0x0000000000500000-0x0000000000510000-memory.dmp