Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
04/06/2026, 08:32
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe
Resource
win11-20260513-en
6 signatures
150 seconds
General
- Target 2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe
- Size 36KB
- Sample260604-kfbqeabv2s
- SHA256 907d4722b5c55fa59f1cf20a3ee9bf287989c0363cef27c82a220048a123f577
- MD5 68c91fc0185af6e5e231b2e07f843dff
- SHA1 ab85eb7289dee528bf466df03bd81fea8514088d
- SHA512 23da37bb6062c42a403c59ce7ccd045e3a923f0835c2eb191168ceba6e46d10b8ef0454cd3476f3616d62ca3974435750f73e3f65ea143c186f8eabb8f5a375c
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf2V+:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xq
- TLSH T141F264326FD415E2D6779A73F5F791C2E926BD262C22850E108A7F4409F3A91ECA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Custom signatureDetection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000b00000002aac6-12.dat CryptoLocker_rule2 - Custom signatureDetection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000b00000002aac6-12.dat CryptoLocker_set1 - Executes dropped EXE 1 IoCs
pid Process 4332 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 2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2468 wrote to memory of 4332 2468 2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe 79
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-06-04_68c91fc0185af6e5e231b2e07f843dff_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2468 -
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:4332
-
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 4592efa809257dd1da341279268b8de78eb3e585c09a62d99bfe69a0f620d97f
- MD5 a754656f2ba62d075fa9ce07c7b89f41
- SHA1 61f92b9ed8c477aa8cb08d326326d680ae8bb60f
- SHA512 87eb304020e453ad1d0273803be6d9ce28b95dd023f1de96f64fc311377a9bd36734556e5475a16839d60f548792f3f7241625e5e24e4c54b1058f03ed949f25
- SSDEEP 768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf2VN:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XB
- TLSH T192F264326FD415E1D6779A73F9F791C2E926BD263C22850E108A7F4409F3A91ECA1D0E
- MD5 SHA1 SHA512 SSDEEP TLSH