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
20/08/2026, 14:00
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe
- Size 39KB
- Sample260820-ra5vmaycja
- SHA256 9e3f320eb76f1c10221c4a5399203eab4729ad12fdca6139025ae457df1e666b
- MD5 ffcb2f4b9d1ac8b06aea9c98a01c24ea
- SHA1 0247bc4e0d2d641ab68693ed4e44b46689b5e418
- SHA512 9ce91c4a567188b3f98f32388e61df61366e21db7b3699f8d5914c3c3e366eaa74e94e05e2a8970476f746ac497ceb2c3dd7124413a6190af1112c4f39ed2c3c
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpygR:bA6YcA/X6G0igEggWS
- TLSH T1E503503C6FE62972D37BCAB695F791C2B935B8223A158C4E54CF13844C23B53AC9291D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4904-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001b890-13.dat CryptoLocker_rule2 behavioral2/memory/4632-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4632-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4632 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_ffcb2f4b9d1ac8b06aea9c98a01c24ea_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 4904 wrote to memory of 4632 4904 2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_ffcb2f4b9d1ac8b06aea9c98a01c24ea_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4904 -
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:4632
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 39KB
- SHA256 cd993d51860410662f41dda944537c82c4872ad489352ac210b2c5a5a5d6876e
- MD5 04e6a6d603a8a3d7aa5eac9cda8c90b2
- SHA1 3728e710f0a26c97a7fdadf97fcef2ad0f029a54
- SHA512 40a1873c42c8b7143e79eb8085be5225fbcec6f4c8510e5deda4d736b7b09a619a0e05e67af1d6e10a79621b74302d85644dbdc354e7178ad570c89ec48c07fa
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpygd:bA6YcA/X6G0igEggWO
- TLSH T1AD03513C6FE62972D37BDAB695F791C2B935B8223A158C4E44CF13844C23B53AC9291D
- MD5 SHA1 SHA512 SSDEEP TLSH