Analysis
- max time kernel
149s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
20/07/2026, 07:23
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
6 signatures
150 seconds
General
- Target 2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe
- Size 52KB
- Sample260720-h738macw5v
- SHA256 bfa92fb2401b8ce22ea5a23a3290311bd309fefcbd69b377cf400778db7d0e64
- MD5 ef9454b8a66cf84ca59495481ecf6a0c
- SHA1 2c5ededfa45786bf8b5a97ae096b39b07dcf9172
- SHA512 55f2f2d9c29c37f0a4bc09e6b6d4e946bbc1c712f5a63961fcbf1759ef8d2c6c90aa8f3b46f31728ebab94a1f00de940d3461e8c20b0c0d8741c14d4e715a99c
- SSDEEP 1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7Zsz6Im7wmF2H70ResBd+:aq7tdgI2MyzNORQtOflIwoHNV2XBFV77
- TLSH T1A333A432ABD415D6E6739673F9F752C2A922BD162A21494F20893F050EF37C1ACB1D1E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000600000001b85f-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000600000001b85f-12.dat CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 3360 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 hurok.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4372 wrote to memory of 3360 4372 2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-20_ef9454b8a66cf84ca59495481ecf6a0c_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4372 -
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:3360
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 53KB
- SHA256 6e2cc0e771f35983599248c8891af2514b7a18b1c8c2ee4f1dd082cc0e4ca771
- MD5 2f33133d4b7c34db69cff4f6a1b33811
- SHA1 bf11053daae97d0a09f43f8172cfd7f24f3770a7
- SHA512 bed6d8bdc9e510c785dfc1842bb8a4942ded63db324a8e027409cc2ede9664e7ca738b667d93f3f9b031d9f1a17495be136fb2be6c15e7f28a9dd485fb07161e
- SSDEEP 1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7Zsz6Im7wmF2H70ResBdX:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S
- TLSH T13B33A432ABD415D6E6739673F9F752C2A922BD162A21494F20893F050EF37C1ACB1D1E
- MD5 SHA1 SHA512 SSDEEP TLSH