Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
12/10/2024, 18:48
General
- Target 2024-10-12_41e22db5d113bc568a21e4e9d5ed1860_cryptolocker.exe
- Size 39KB
- Sample241012-xfr4lszdpl
- SHA256 80425f5f6fed0cd749c495935ab3f5616f6aa03edbc05bf652be61c62b97dce8
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\2024-10-12_41e22db5d113bc568a21e4e9d5ed1860_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-12_41e22db5d113bc568a21e4e9d5ed1860_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/2816-19-0x0000000000620000-0x0000000000626000-memory.dmp
memory/2816-20-0x0000000000750000-0x0000000000756000-memory.dmp
memory/2816-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4580-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4580-1-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/4580-2-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/4580-4-0x0000000002100000-0x0000000002106000-memory.dmp
memory/4580-17-0x0000000000500000-0x0000000000510000-memory.dmp