Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/06/2024, 07:29
General
- Target 2024-06-09_7eb47fd612a3671090db2d0d182a7ccd_cryptolocker.exe
- Size 40KB
- Sample240609-jbd5asfe9s
- SHA256 b23ed4258bb2c35c556f7a5c0c45f3ea105d1d106179ee074ffcb6189ad29b08
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\2024-06-09_7eb47fd612a3671090db2d0d182a7ccd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-09_7eb47fd612a3671090db2d0d182a7ccd_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/2580-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2580-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/2580-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/2580-9-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/2580-18-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3184-19-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3184-21-0x0000000002100000-0x0000000002106000-memory.dmp
memory/3184-27-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/3184-28-0x0000000000500000-0x0000000000510000-memory.dmp