Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
18/02/2024, 05:11
General
- Target 2024-02-18_f58a039ace660d9e27a672a9088a1f67_cryptolocker.exe
- Size 50KB
- Sample240218-fvdfbsec3y
- SHA256 cc6e8b142a00d3d9be85c6c3f7dd7a87f5ac2f88a028d69b3733ccfbb6bfaa61
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 3 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
- 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\2024-02-18_f58a039ace660d9e27a672a9088a1f67_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_f58a039ace660d9e27a672a9088a1f67_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/3160-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3160-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3160-2-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3160-3-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/3160-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4704-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4704-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp
memory/4704-26-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4704-27-0x0000000000500000-0x0000000000510000-memory.dmp