Analysis
- max time kernel
150s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
09/08/2026, 19:36
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe
- Size 3.4MB
- Sample260809-ybajfacp2t
- SHA256 ac4dc40d19fae49b33b84f6d45551365cd2549dc45c7778525600e68e118a604
- MD5 ac4028ede6e5c9cd44248347c057f90e
- SHA1 f27e75039c006ba610a09a5ce72dc1251f0b9327
- SHA512 163be971bfe953e3e7f17520519c6ccb494e1dce1a096eec8f44c4e32eaeb442f463a099ae5b84ec8dfc4746bdd5ba7c5acf65d942d19984e57aa8b97835f937
- SSDEEP 49152:uR/ZFIjBzT1CIdSPHf0f/ZFIjBzGAyGs+Q7uOZzNvBLEdf0:uR/ZFIjBzldUfs/ZFIjBz7jSZD9
- TLSH T1D5F55C6F68A611A4DCFAC8305BE9F222FF6334594739A7F31AA091201F25BD1F875712
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2956-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000e00000001c48a-13.dat CryptoLocker_rule2 behavioral2/memory/3472-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3472-20-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Detects executables built or packed with MPress PE compressor 1 IoCs
resource yara_rule behavioral2/files/0x000e00000001c48a-13.dat INDICATOR_EXE_Packed_MPress - Executes dropped EXE 1 IoCs
pid Process 3472 hasfj.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2956 wrote to memory of 3472 2956 2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-09_ac4028ede6e5c9cd44248347c057f90e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2956 -
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
PID:3472
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 3.4MB
- SHA256 9634a0d3a10d8c30a002afc4fbf139150fe7a215187038b61a63037c1a08029e
- MD5 b2a9b3256a5ad27844eb35cd1c43d031
- SHA1 f41acaa9cc7b582874a8d3026e3b443ed2bf755c
- SHA512 a1960c05ae285081ef8ef86840cde69ca3cfb975e9fc2b283eb9dc6675b95f65b3062ac0eca5d62f7df6dbe99b5235e4f2d730128b49ffd0c2fd161335fdc2e5
- SSDEEP 49152:uR/ZFIjBzT1CIdSPHf0f/ZFIjBzGAyGs+Q7uOZzNvBLEdfR:uR/ZFIjBzldUfs/ZFIjBz7jSZDw
- TLSH T1B0F55C6F68A611A4DCFAC8305BE9F222FF6334594739A7F31AA091201F25BD1F875712
- MD5 SHA1 SHA512 SSDEEP TLSH