Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
10/11/2024, 03:51
General
- Target 2024-11-10_d781f671a9e2616ed8b93b2e66cd07a6_cryptolocker.exe
- Size 60KB
- Sample241110-eerscaskek
- SHA256 7b738d1c834f09fe16467e5ffe1ceb5aa3f0f9fbbae47cae769f7190ef2224c3
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_d781f671a9e2616ed8b93b2e66cd07a6_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-10_d781f671a9e2616ed8b93b2e66cd07a6_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/1216-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1216-1-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/1216-2-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/1216-3-0x00000000021C0000-0x00000000021C6000-memory.dmp
memory/1216-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3404-19-0x0000000000750000-0x0000000000756000-memory.dmp
memory/3404-25-0x0000000000620000-0x0000000000626000-memory.dmp
memory/3404-26-0x0000000000500000-0x0000000000510000-memory.dmp