Analysis
- max time kernel
148s - max time network
152s - 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, 14:57
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe
- Size 55KB
- Sample260804-sb14hashpd
- SHA256 d8bd8fe0b299b8d2b090289b12b46399f0f8f8adc840320e4252cd0d4840a4fb
- MD5 91b3b839c50030fa831311c3a0f49a4c
- SHA1 2573e356fd62f9c2a177a774a44aedd633239917
- SHA512 04cabe3dab26af3333981ea3a4f6e07c773505d9bcb1241ef9816677721578d53b7a734fbc587994c0c6941a1216042c9843d3ca82546c15a8f5256464f3bb26
- SSDEEP 768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqr8y+SO4m4qgp0hyY:bc/y2lkF0+Bjr1+kDqgpxY
- TLSH T1DF43443C7FD55A72E377C6B585F2A1C6FA35B81239069C0D50CB93880833F56ADA1A1D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000d000000019cd9-13.dat CryptoLocker_rule2 behavioral2/memory/3208-20-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 3208 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 2026-08-04_91b3b839c50030fa831311c3a0f49a4c_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 2560 wrote to memory of 3208 2560 2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_91b3b839c50030fa831311c3a0f49a4c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2560 -
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:3208
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 56KB
- SHA256 030bed5940d99a601dcc27dd33663cdbc74d85783ed1f5625c05221fac7ccbed
- MD5 ac720132059bca7c98c706e7d02b0332
- SHA1 d0fc4a0df38e7779f92a3c0a3fbf95063a4f4d59
- SHA512 fb295af111418965556f5fb32c73ca2aa14a5c07d0726c9563b0a4eaae8bc2574321d04b2eabaaa1a6cf74c64a3194fd2610ef13835f12bb83a53d1b4125230c
- SSDEEP 768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqr8y+SO4m4qgp0hyO:bc/y2lkF0+Bjr1+kDqgpxO
- TLSH T1DE43443C7FD55A72E377C6B585F2A1C6FA39B81239069C0D50CB93880833F56ADA1A1D
- MD5 SHA1 SHA512 SSDEEP TLSH