Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
25/01/2024, 15:48
General
- Target 2024-01-25_bf5a5476023b750f22c129ebfd50709b_cryptolocker.exe
- Size 85KB
- Sample240125-s8zxpsaad5
- SHA256 27a416ad2750933a743e28531c295611b8382882af3368a1f091a47a2bed4708
Score
10/10
Malware Config
Signatures
- Kinsing
Kinsing is a loader written in Golang.
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 IoCs
- UPX dump on OEP (original entry point) 4 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 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).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_bf5a5476023b750f22c129ebfd50709b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_bf5a5476023b750f22c129ebfd50709b_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/208-19-0x00000000005E0000-0x00000000005E6000-memory.dmp
memory/208-21-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/208-26-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2012-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2012-1-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/2012-2-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/2012-3-0x00000000006D0000-0x00000000006D6000-memory.dmp
memory/2012-16-0x0000000000500000-0x000000000050F000-memory.dmp