Analysis
- max time kernel
148s - max time network
150s - platform
windows7_x64 - resource
win7-20231129-en - resource tags
- submitted
26/05/2024, 03:53
General
- Target 2024-05-26_8e1b4cdad58bb04511dd8d2c0f4301c8_cryptolocker.exe
- Size 39KB
- Sample240526-ef6b5aef94
- SHA256 b774fbf29c6f3ec38332c3be6df871def4df1a50ce26de521294522218d2f7c5
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 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 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-05-26_8e1b4cdad58bb04511dd8d2c0f4301c8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-26_8e1b4cdad58bb04511dd8d2c0f4301c8_cryptolocker.exe"1⤵
- Loads dropped DLL
- 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/1644-19-0x0000000000310000-0x0000000000316000-memory.dmp
memory/1644-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1684-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1684-1-0x0000000000240000-0x0000000000246000-memory.dmp
memory/1684-2-0x00000000004B0000-0x00000000004B6000-memory.dmp
memory/1684-9-0x0000000000240000-0x0000000000246000-memory.dmp
memory/1684-13-0x0000000002AC0000-0x0000000002AD0000-memory.dmp
memory/1684-17-0x0000000000500000-0x0000000000510000-memory.dmp