Analysis
- max time kernel
149s - max time network
141s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
31/05/2026, 02:40
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe
Resource
win11-20260513-en
6 signatures
150 seconds
General
- Target 2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe
- Size 36KB
- Sample260531-c53anagy71
- SHA256 eb57aa1cb16dea2ee3237a3f7e899f75098930d73dc2207b60ef64d261465ac0
- MD5 b3938ac02cd1ecde45a0549106603ad6
- SHA1 f634cc830312561f1034dd12f0b9d5e699313914
- SHA512 081e423ffbb21f92217fe5e8d420b6873979b9fc7a5883dff63fbe757b24dab323c8b53bddc29779d59674a2840bb608f91f80d0169ce28ee604ac395056ad0e
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf2VT:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X/
- TLSH T1E5F264326FD415E1D677AA73F5F791C2E926BD263C22850E108A7F4409F3A91ECA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000f000000025c9a-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000f000000025c9a-12.dat CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 2492 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 2026-05-31_b3938ac02cd1ecde45a0549106603ad6_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 5444 wrote to memory of 2492 5444 2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-05-31_b3938ac02cd1ecde45a0549106603ad6_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5444 -
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:2492
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hurok.exe
- Size 36KB
- SHA256 00ba00ed5d06498f1e93362755c81fd1fe2c15f1695c10a66474c26475ea40d4
- MD5 6aaf83a9992f2f5b506d1b306c84fc5d
- SHA1 8463556a780305d115f787376367fffa24c29828
- SHA512 79636bc018998719546d0ea8967f6ef34ae5412a6d68307ef0c9e422d9708fc14f98663fe2818b9a54a9f6cd9f0bd3cb33bca3994f2e70aa512754f85025139f
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf2VX:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XL
- TLSH T111F264326FD415E1D677AA73F5F791C2E926BD263C22850E008A7F4409F3A91ECA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH