Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/06/2024, 03:33
General
- Target 2024-06-13_59902696ba3d47d8848c000a3c2ea8f3_cryptolocker.exe
- Size 82KB
- Sample240613-d4d24swfpk
- SHA256 4719c5d2a6856af37e138150e2b0572fe5ce09d974bf6b870efc5d75f22ec300
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- 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 5 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).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_59902696ba3d47d8848c000a3c2ea8f3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_59902696ba3d47d8848c000a3c2ea8f3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
misid.exe
memory/4360-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4360-1-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/4360-3-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4360-9-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/4360-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4840-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4840-20-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/4840-26-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4840-27-0x0000000000500000-0x0000000000510000-memory.dmp