Analysis
- max time kernel
148s - 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
19/08/2026, 04:26
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe
- Size 53KB
- Sample260819-e22k3ada26
- SHA256 89e671fa07c2f80021998f8ca41e4bc357a7bc5c636ab0cf605d0168cb7a1bdf
- MD5 c42251fea149eb5a4736c25bd4b4a095
- SHA1 54819c44d9b9362e602212ce9dfd317ea5d9dd9d
- SHA512 147dcd7b20a33824dd3b61b384ab512a0b0bbf7ee7d963ee764a622a30c66633ef3bae6c1cf3c1e7d287d9668acbc615277000ea6bc0c5f0f63f99f0229d5002
- SSDEEP 768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMV0W3SaBK+xT0IOOmSu+:bc/y2lkF0+BUpCFIOo
- TLSH T12033653C7FD51672D377C6B585F6A1C2FA39B86239029C0D50CBA3480933F5AADA1A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000600000001b85f-13.dat CryptoLocker_rule2 behavioral2/memory/4344-20-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4344 rewok.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 2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rewok.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3856 wrote to memory of 4344 3856 2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-19_c42251fea149eb5a4736c25bd4b4a095_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3856 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4344
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 53KB
- SHA256 ebbda3d6cab109e64cf1da454c63ee7db76d3345b33effc90dfdee6b4c8e42e4
- MD5 b81942140e5fc6f8c9a38a3c6dac63c0
- SHA1 df57afcc5b7fbc71d4ef6be15eb3559656ca5d27
- SHA512 3022d08848a486b7470ec281dafa070f224aab204044f77abd020c41f6e0c0bc15821ddd13ea283e755a3a7452fdf8f28287d06c3c770f562e2f51dd2f3f0442
- SSDEEP 768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMV0W3SaBK+xT0IOOmSut:bc/y2lkF0+BUpCFIOH
- TLSH T17A43643C7FD51672D377C6B585F6A1C2FA39B86239029C0D50CBA3480933F5AADA1A1D
- MD5 SHA1 SHA512 SSDEEP TLSH