Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
16/07/2026, 11:14
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe
- Size 36KB
- Sample260716-nb2b2sfs4v
- SHA256 f3a6155fe004c83ad011e96783f169352b50ef7dede26f38b38893772ef2856c
- MD5 c99f66b1f5f66d17a0f089004673c099
- SHA1 c47c7f10e60a7c47dd0bb99906f3cddf3c29c7e7
- SHA512 df61dcbce9919c38493890596abc3761996cd04a461d3217ae8b61b06e844d132fe417f9aa9433d8961fc817e7493ccd26cadeb9402bd5cd9798a869946b4b18
- SSDEEP 384:bbM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorwI62gttpv+/Wi4U1:bAo/2n1TCraU6GD1a4Xcn62y72/p1
- TLSH T1E0F273397FE85962D277867454F3B1C1B93A7C123D069D1E66CBB3880933B1ABC9061D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 2 IoCs
resource yara_rule behavioral2/files/0x000d00000001b1e8-13.dat CryptoLocker_rule2 behavioral2/memory/2156-20-0x0000000000400000-0x0000000000408000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 2156 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 2026-07-16_c99f66b1f5f66d17a0f089004673c099_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 1992 wrote to memory of 2156 1992 2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-16_c99f66b1f5f66d17a0f089004673c099_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1992 -
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:2156
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\rewok.exe
- Size 36KB
- SHA256 e8bdb72b67ee71264e256788eb99a7333aad154ebbd8c569601c9c90557be344
- MD5 18c9f7c78923292d41002235e7b9451e
- SHA1 5ad46e80aba2481e7a678961d00157fa917e9f57
- SHA512 962951d3118c1d58a178167f2d5c8ee11e1812d09a2a91213b2dc42f4548249db8ea983d2cba7a217ca4df2b3d2edcf96aa304b8a909698f92e3d7c4118e58cd
- SSDEEP 384:bbM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzorwI62gttpv+/Wi4Un:bAo/2n1TCraU6GD1a4Xcn62y72/pn
- TLSH T198037339BFE85962D277867454F3B1C2B97A7C123D069C1E56CBB3880933B1ABC9061D
- MD5 SHA1 SHA512 SSDEEP TLSH