Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/05/2024, 12:25
General
- Target 2024-05-13_1e9a84c7edc546ca3617c1b1e61a29a4_cryptolocker.exe
- Size 78KB
- Sample240513-plv4fsfb54
- SHA256 3c8bb7241bec12f1e28786bb466483c2827e6686e7cd31bd2ff5bfbeb90b8d07
Score
9/10
Malware Config
Signatures
- 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\2024-05-13_1e9a84c7edc546ca3617c1b1e61a29a4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-13_1e9a84c7edc546ca3617c1b1e61a29a4_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/3328-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3328-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3328-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/3328-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/3328-16-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4312-19-0x0000000000750000-0x0000000000756000-memory.dmp
memory/4312-25-0x00000000006A0000-0x00000000006A6000-memory.dmp
memory/4312-26-0x0000000000500000-0x0000000000510000-memory.dmp