Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
10/06/2024, 21:32
General
- Target 2024-06-10_66a9633c9fe9f9499f89cc4399219e1f_cryptolocker.exe
- Size 68KB
- Sample240610-1dyp6a1dpd
- SHA256 21a2a3da077e3c5e0dfab28c9e5ebe9146bc6adc34091c1aedba5baa7e57d229
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\2024-06-10_66a9633c9fe9f9499f89cc4399219e1f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_66a9633c9fe9f9499f89cc4399219e1f_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/1112-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/1112-1-0x0000000000730000-0x0000000000736000-memory.dmp
memory/1112-2-0x00000000020F0000-0x00000000020F6000-memory.dmp
memory/1112-9-0x0000000000730000-0x0000000000736000-memory.dmp
memory/1112-18-0x0000000000500000-0x000000000050F311-memory.dmp
memory/1396-17-0x0000000000500000-0x000000000050F311-memory.dmp
memory/1396-20-0x0000000002070000-0x0000000002076000-memory.dmp
memory/1396-26-0x0000000000800000-0x0000000000806000-memory.dmp
memory/1396-27-0x0000000000500000-0x000000000050F311-memory.dmp