Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260130-en - resource tags
- submitted
23/04/2026, 11:52
General
- Target 2026-04-23_f79624f8d67d358dbfb39a1b0b3015a9_cryptolocker_elex.exe
- Size 43KB
- Sample260423-n1rh5sbz21
- SHA256 9a4398ac93b5cc55a16aac7a88094c7e2078a4b60732a66f1c4567bb17cb85e4
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 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
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-04-23_f79624f8d67d358dbfb39a1b0b3015a9_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-04-23_f79624f8d67d358dbfb39a1b0b3015a9_cryptolocker_elex.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 18843⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4528 -ip 45281⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
hasfj.exe
memory/4380-0-0x0000000008004000-0x0000000008005000-memory.dmp
memory/4380-1-0x0000000002E90000-0x0000000002E96000-memory.dmp
memory/4380-2-0x0000000008000000-0x000000000800A000-memory.dmp
memory/4380-3-0x0000000003230000-0x0000000003236000-memory.dmp
memory/4380-18-0x0000000003120000-0x0000000003203000-memory.dmp
memory/4528-17-0x0000000008000000-0x000000000800A000-memory.dmp
memory/4528-21-0x00000000020C0000-0x00000000020C6000-memory.dmp
memory/4528-20-0x0000000008000000-0x000000000800A000-memory.dmp
memory/4528-27-0x00000000025B0000-0x0000000002693000-memory.dmp