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
04/08/2026, 16:08
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe
- Size 53KB
- Sample260804-tlqaeshr71
- SHA256 f854a28c275ea431083f4d9c0aa3d8d3ec2a5f0f1469213582b5654f4c191b9a
- MD5 3b8ba6416f0a4c2c7d56f6c197c81188
- SHA1 05517c357ca61838da1c9803f931c241c1cf5a89
- SHA512 7439665daaf0419776127d2a42aa0a1f196992453d4c82a30acb98712ff64347ff46cff37d454b9072d69c79b68c865c14bbca379fe13a71c20a7ec66d3a5df6
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycw1:bgGYcA/53GAGgIvFW17a
- TLSH T1753310387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/5492-2-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000d000000016cd6-13.dat CryptoLocker_rule2 behavioral2/memory/5012-18-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/5012-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 5012 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 2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_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 5492 wrote to memory of 5012 5492 2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_3b8ba6416f0a4c2c7d56f6c197c81188_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5492 -
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:5012
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 53KB
- SHA256 d0c8783cef79701c6b8be2be78b5552aa850359ba8de9c0f50563404920be7ce
- MD5 f6369c1e91601b4644122aebec4e33b8
- SHA1 1954ca5dc7fe2d59264d7784d28e5463ea86e205
- SHA512 27ea84334f6c258f33ed577bc13158d6c28824a1ed633da33cfd9db1ab9b819a648151a666cdf9f320ccf06b984b93f4b047df3c4f8cd18298d023e1b5d0c56f
- SSDEEP 768:bgX4zYcgTEu6QOaryfjqDGgIvq3ncSpcXQ1J1ycw2:bgGYcA/53GAGgIvFW17J
- TLSH T15A3310387BE52932E37BDFB586F691C6B935B8223D16D80D40DA43844833F65DCA1A1E
- MD5 SHA1 SHA512 SSDEEP TLSH