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, 16:12
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe
- Size 35KB
- Sample260804-tnhncsde25
- SHA256 ef4b0c778ee40e2b121923864508689997fd45cfa04072af602fcc81147dcac9
- MD5 3773868a41b10ba70970092ae8f07a1f
- SHA1 ab4fa1b2416f91aabeb4c721167fa0d2630c801c
- SHA512 7fcf82eb17e8fe1c51ed72502fa1750b882d71f8c274ac33bfe9186e115dcdeb3bcf8fe526a07d391b05122838d4201aa27112cea5b074ecf8c856069c51c9a6
- SSDEEP 768:df1K2exzikBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGS/YIm7wm+Q:B1KhxTwtdgI2MyzNORQtOflIwoHNV2XP
- TLSH T1E5F25436AEC515E6D673AA77F4F792C2E927BD653922450E108A3F0049F3781BCA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000600000001b867-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000600000001b867-12.dat CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 3104 hurok.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_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2668 wrote to memory of 3104 2668 2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-04_3773868a41b10ba70970092ae8f07a1f_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3104
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 35KB
- SHA256 f43dd8035d10ab247ec6fede5d904348b277fe9b88f74d4cfa390964549fabf0
- MD5 b4209eee0196bc4398ee11d9e1b543e8
- SHA1 23cd3575904e7e98fe00a9add11c7ae7eb254a6e
- SHA512 2273a727b0c9ec37cf2b3e6aa4010bf3b0831e6312ad959df248d9824bde06ce7ae21496b78ea7fabeea38bd1ab7c0f04894632bd83cd1fea88b89f24c8778fb
- SSDEEP 768:df1K2exzikBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGS/YIm7wm+F:B1KhxTwtdgI2MyzNORQtOflIwoHNV2Xe
- TLSH T1A0F26436AEC515E6D673AA73F4F791C2E927BD653922450E108A3F0009F3781BDA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH