Analysis
- max time kernel
150s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
19/08/2026, 23:22
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe
- Size 41KB
- Sample260819-3c3c3aab97
- SHA256 3b17f94adcc9770d1a90aa38ea4c1dfc2dd67129c00c88121e1a1d7e801dcd69
- MD5 0a506ea2de86de894d9ac2bec5421760
- SHA1 fe12cf65b6b7aa23c74e19821184ee7392f51c9b
- SHA512 4c33d6ed08ca4ce8c81a25905493385d0f830a47926aeb663098146fe95ce368c8aba6b7ad5dcffcebd6a048365b13bc784ad396fb63b925acd3fd56d55aeb47
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCPY:bgGYcA/53GAGgIvFuY
- TLSH T1671376387FE62972E37BDFB586F691C67935B8223D16880D44CA53844833F66EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3632-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000800000001b858-13.dat CryptoLocker_rule2 behavioral2/memory/3936-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3936-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3936 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 hasfj.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3632 wrote to memory of 3936 3632 2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_0a506ea2de86de894d9ac2bec5421760_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3632 -
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:3936
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 42KB
- SHA256 a35c68da2db88739242638b8b828a00a9ef048e1942c46f49066f00dab6d581c
- MD5 1393c95ef918b576402c9fffda145bd0
- SHA1 3e37d60aee1d0805a833a3d1b724ce077d41611e
- SHA512 049b8bfd7b6224ad902ee0cbdba75dd7cd8866e80ff704c24dcb96789e70aad189788e6ea0bc31a19104ffc8c0a7cda75e34ce5c355984acf4dd5593b29cd434
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXCP7T:bgGYcA/53GAGgIvFuX
- TLSH T1401376387FE62972E37BDFB586F691C67935B8223D16880D44CA53844833F66EC51A0E
- MD5 SHA1 SHA512 SSDEEP TLSH