Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
03/06/2024, 10:24
General
- Target 2024-06-03_029e974dd6cfa5017f3041d0d68c5a72_cryptolocker.exe
- Size 43KB
- Sample240603-mfkdnabb8z
- SHA256 ba0927e7cacb3e20f0c8804f241d91a5eebbb6d91e4ebda8e54eeb5c4a01f15d
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-03_029e974dd6cfa5017f3041d0d68c5a72_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_029e974dd6cfa5017f3041d0d68c5a72_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lossy.exe
memory/776-17-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/776-23-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2308-0-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/2308-1-0x00000000020F0000-0x00000000020F6000-memory.dmp
memory/2308-8-0x00000000020D0000-0x00000000020D6000-memory.dmp