Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
29/05/2024, 12:08
General
- Target 2024-05-29_7a1a5881d7ab860b7269cf6c707c8b05_cryptolocker.exe
- Size 90KB
- Sample240529-pavcsaee34
- SHA256 3b5bd822403da74589b4380f3339ee4a9c8e0f94c76342a7916d8067a1dde441
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\2024-05-29_7a1a5881d7ab860b7269cf6c707c8b05_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-29_7a1a5881d7ab860b7269cf6c707c8b05_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
Loading Replay Monitor...
Downloads
asih.exe
memory/1840-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1840-1-0x0000000002050000-0x0000000002056000-memory.dmp
memory/1840-2-0x0000000002080000-0x0000000002086000-memory.dmp
memory/1840-9-0x0000000002050000-0x0000000002056000-memory.dmp
memory/1840-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3132-19-0x00000000006D0000-0x00000000006D6000-memory.dmp
memory/3132-25-0x00000000006B0000-0x00000000006B6000-memory.dmp
memory/3132-26-0x0000000000500000-0x0000000000510000-memory.dmp