Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
22/08/2026, 21:29
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe
- Size 48KB
- Sample260822-1b2n2azbrf
- SHA256 842c627c8e612f8a314cadb3b283fd694031c90de2610e65c8acd0aaf57d518a
- MD5 f1cab0c8afe4c67099f7a4b6e80e7841
- SHA1 df5100854aa26eee196721324778a7f2ba41a6c9
- SHA512 40be4f45a42a44d7c8652c4c12c55e57a5158b1f9f9c437f265841309cd6c27f542141280091658753151eaf48b53e3551155fda76fc6f2dcae0b688419b2322
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhqG:bgGYcA/53GAGgIvF7El
- TLSH T1772322387BE52932E37BDFB586F691C67975B8223D16980D40CA43444C33F65ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3392-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d00000001b1e8-13.dat CryptoLocker_rule2 behavioral2/memory/5436-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5436-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5436 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 2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_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 3392 wrote to memory of 5436 3392 2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-22_f1cab0c8afe4c67099f7a4b6e80e7841_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3392 -
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:5436
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 48KB
- SHA256 aa186563231a4fdfb523bc87a752de5dfd16c63d01e4f63b82421b5efbc38a28
- MD5 6bd9a4d4f8d536e13bf115ec10ab0532
- SHA1 4942d7366c0b241135d846de020c44f622b0a6a8
- SHA512 8992949525b94676216a35a385f53a8de706ad957dc7fe73304b8cd2dedc8ce2158f7827e6683cfccdc5261d22caf1225d75dbdbcdc97cee22bc175acbe293f3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJEhqo:bgGYcA/53GAGgIvF7E/
- TLSH T1EC2322387BE52932E37BDFB586F691C67975B8223D16980D40CA43444C33F66ECA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH