Analysis
- max time kernel
150s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/08/2026, 19:08
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe
- Size 45KB
- Sample260820-xtck3sfd36
- SHA256 39074946be8791bf0a6d73c2f05d692a7a689c86273cbe74339872374d95ddee
- MD5 4807137092843cd04a4753249128b1e5
- SHA1 b11b8a6e830f9116a625ce36949005261403972f
- SHA512 4de6d363ead8790ebb8d055617608e2eb24d7a62f9a0ac902089caf383fdae0e9b43465017035dcbf7c02149adc9364ac51854b7543cbbcf9419b2e66c886633
- SSDEEP 768:bA74zYcgT/Ekd0ryfjLzViYmGl3J2dBqW3xVm:bA6YcA/X6G/zVinyUugg
- TLSH T103231C3C6AD62972D3BBDAB685F751C2BD35B82339158C0E44CB13844C23F66BD9261E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4148-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000f000000016cdf-13.dat CryptoLocker_rule2 behavioral2/memory/248-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/248-26-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 248 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 2026-08-20_4807137092843cd04a4753249128b1e5_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 4148 wrote to memory of 248 4148 2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_4807137092843cd04a4753249128b1e5_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4148 -
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:248
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 45KB
- SHA256 2b075384cf691cf03ada70932311f19821ee9f71daa56c0f1fbe8df54c8ee8c5
- MD5 127955398ebec9c6b86a2c3796931c70
- SHA1 84c028a37f32d72a78d834818b5780e22a006b1c
- SHA512 4078faf7f2aa56309df3b7d4f01df78d199babfac43844f0e31aa3416e4ec0845cb19bf32b79ffadf6499474d4d4f6333e49177d84983ebf22ee6547b4aad15c
- SSDEEP 768:bA74zYcgT/Ekd0ryfjLzViYmGl3J2dBqW3xV2:bA6YcA/X6G/zVinyUugA
- TLSH T1CB231C3C6AD62972D3BBDAB685F751C2BD35B82339158C0E44CB13844C23F66BD9261E
- MD5 SHA1 SHA512 SSDEEP TLSH