Analysis
- max time kernel
150s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
22/05/2026, 10:19
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe
Resource
win11-20260513-en
5 signatures
150 seconds
General
- Target 2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe
- Size 44KB
- Sample260522-mckj9abx21
- SHA256 bbe7b27b685ddb2a46aabd2d197276766abe576c9e9df66f1fb2f8ee45f1ff05
- MD5 9f65ce81db750f72dad49cf8456d0835
- SHA1 45ac4dcf337b99236e28db958aee12d93dd09943
- SHA512 cf299f1b8c517ae54baf13e9a593403dd5293c398b5f0786dd7eef21a64779a4b05e111f3879781da2637973ce08e59bd470b38cd16c1bb2976f4b799a520395
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJYUaJR6:bgGYcA/53GAGgIvF76tv6
- TLSH T1CF1354387FE62932D37BDFB586F651C6B975B8223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4444-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0008000000000438-13.dat CryptoLocker_rule2 behavioral2/memory/3276-17-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3276-25-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3276 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 2026-05-22_9f65ce81db750f72dad49cf8456d0835_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 4444 wrote to memory of 3276 4444 2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-22_9f65ce81db750f72dad49cf8456d0835_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4444 -
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:3276
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 44KB
- SHA256 d0f812eedd57080753d458c3f93050873cbcb61fe973ddef230d8af2bba6254d
- MD5 f0a49b343a10b3663aeffe95a3d84b86
- SHA1 c7768b65a8340c278fe73260f915d197c25a0128
- SHA512 7fff98051c6e402c2fbcab65dca2cf764c1fd92cd155552b71ff18694cd7b12484891d4b046e36bdaeada66e7fe5d81cfc9a3f926c9210bd9fa62dfc28ff9ab3
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcJfJYUaJRB:bgGYcA/53GAGgIvF76tvB
- TLSH T1891354387FE62932D37BDFB586F651C6B975B8223D16980D40CA53844833F66EC91A0E
- MD5 SHA1 SHA512 SSDEEP TLSH