Analysis
- max time kernel
147s - max time network
148s - platform
windows7_x64 - resource
win7-20231215-en - resource tags
- submitted
25/01/2024, 17:28
General
- Target 2024-01-25_59796b548d643ef5532ecd1138966f74_cryptolocker.exe
- Size 115KB
- Sample240125-v2fllabff5
- SHA256 ac1e4a9ba6ee34f32645634e2f85aa362a95c522526ec64bca2bb1b7d8a750a2
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\2024-01-25_59796b548d643ef5532ecd1138966f74_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_59796b548d643ef5532ecd1138966f74_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
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Downloads
asih.exe
memory/1728-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1728-1-0x0000000000240000-0x0000000000246000-memory.dmp
memory/1728-2-0x00000000003C0000-0x00000000003C6000-memory.dmp
memory/1728-9-0x0000000000240000-0x0000000000246000-memory.dmp
memory/1728-15-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2712-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2712-18-0x0000000000270000-0x0000000000276000-memory.dmp
memory/2712-20-0x0000000000230000-0x0000000000236000-memory.dmp
memory/2712-26-0x0000000000500000-0x0000000000510000-memory.dmp