Analysis
- max time kernel
150s - max time network
157s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
02/08/2026, 16:49
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe
- Size 57KB
- Sample260802-vb1tvaszdz
- SHA256 21c27b14ac4263cec7b35f199cfda684d7a13b8e1e5c05f23d6423c4a873a713
- MD5 cb606e2e1b72b6bb01be3530d38bfab4
- SHA1 b0662eeed14bf31854bd22ced635544a4b51f99a
- SHA512 b906ce4ed1ab598f17038f0fb9ef37a501d311c4cd30176bc93d1998097368196e6da9f93a177e54d8669f11bfd8b21d08b4cdfecfaddaf14a711175bb66f592
- SSDEEP 768:b3o/2n1TCraU6GD1gdcKX4WcO+wMVm+slAMphNuhX3HdAxmlkMl1fEPtw38:b4/y2M1oF0+BeghXuMUD
- TLSH T19843843DBFD51672D37786B585F7A0C6FA3AB82239069C0D50CB53880933F5AADA160D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x0008000000019cc1-13.dat CryptoLocker_rule2 behavioral2/memory/4428-20-0x0000000000400000-0x000000000040C000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4428 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 2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_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 2748 wrote to memory of 4428 2748 2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-02_cb606e2e1b72b6bb01be3530d38bfab4_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748 -
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:4428
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 57KB
- SHA256 17ea929ad99385ac9e64796e2b2f8b2b16b48bd3cba98a264f45502cdd2f90f4
- MD5 cb8d60aa7453df5a3a02956aa829094b
- SHA1 2ac19487fb11db5848ca791a76d161bce92925e9
- SHA512 74828ea7ca6570e9f1a1868d509a8906631d8e6d49621a85f563928d5c247c1c93750f72c8b6a0b58d288979b3c611061d08b9172e373e17b246fa1573162d6b
- SSDEEP 768:b3o/2n1TCraU6GD1gdcKX4WcO+wMVm+slAMphNuhX3HdAxmlkMl1fEPtw3Q:b4/y2M1oF0+BeghXuMU3
- TLSH T17643743DBFD51672D37786B585F7A0C6FA3AB82239069C0D50CB53880933F56ADA160D
- MD5 SHA1 SHA512 SSDEEP TLSH