Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 14:01
General
- Target 2024-11-07_12af9dc9ef2b68758292fee7d9f57424_cryptolocker.exe
- Size 101KB
- Sample241107-rbzp1aspft
- SHA256 f684630467c8982325ed338b9c2d5002a8071124e0da632bca1b8fe60437a3ed
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\2024-11-07_12af9dc9ef2b68758292fee7d9f57424_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-07_12af9dc9ef2b68758292fee7d9f57424_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/992-20-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/992-19-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/992-26-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4936-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4936-1-0x0000000000830000-0x0000000000836000-memory.dmp
memory/4936-2-0x0000000000830000-0x0000000000836000-memory.dmp
memory/4936-3-0x00000000020F0000-0x00000000020F6000-memory.dmp
memory/4936-17-0x0000000000500000-0x000000000050F000-memory.dmp