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
21/08/2026, 00:27
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe
- Size 40KB
- Sample260821-ar78msyerc
- SHA256 756253e37278127a036d77146e41197078e6b9913fd83f4d934ca820abe223e8
- MD5 462023b2147f7cb835ede94b9644f469
- SHA1 5a840d8dba224f43a2cf4dbf9d522200d522a829
- SHA512 5322c0111b86b54f3989863fe411ef3a92cc5b2ee491290718e844cd365420e5f4d51ebac661bc6248c998673c0ad37ff5e48df8bba79c5d2b602371c09c9dc0
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpazDa:bA6YcA/X6G0igEggeva
- TLSH T12113403C6FD62972D37BDAB695F791C2B935B8233A158C4E44CF13844C23B22AD9291D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4900-2-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000700000001b884-13.dat CryptoLocker_rule2 behavioral2/memory/1424-18-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1424-20-0x0000000008000000-0x0000000008009000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 1424 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 2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4900 wrote to memory of 1424 4900 2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-20_462023b2147f7cb835ede94b9644f469_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900 -
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:1424
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 41KB
- SHA256 07cd68d3690b0bc5a6ce13bd0f00e01665568227e531ea6a86728e29891fdde5
- MD5 4e211bc784dea142bc81e21f401722f7
- SHA1 c8f9e26a836ad894e7f7df7748ab8ecaa012923b
- SHA512 ebf575c64a910e7e27fe69f5c4ffdab003fea50fa2fca89407424ffb9e1d258636d7048cb359c974f86be8be0fc2b10ffdb5df6c0c5820f0903731e83d655213
- SSDEEP 768:bA74zYcgT/Ekd0ryfjPI2bgYxExgdpazDg:bA6YcA/X6G0igEggevg
- TLSH T14013413C6FE62972D37BDAB695F791C2B935B8233A158C4E44CF13844C23B12AD9291D
- MD5 SHA1 SHA512 SSDEEP TLSH