Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
28/07/2026, 01:02
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe
Resource
win11ltsc2024-20260710-en
5 signatures
150 seconds
General
- Target 2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe
- Size 1.0MB
- Sample260728-bd69vsveqe
- SHA256 8cef2470420e1cb9454020c88e6cef8603e72b2019c7b69c635f5809aaf7dcd4
- MD5 d317a5e6c078f9dae35404da0f31a1a6
- SHA1 d11f31c681b83743f1b9d225d796a0535aab883c
- SHA512 9d8981efb2031ddb43ea75e3f01efc95ad94525d387cce92ffc8678e2f62a4acbdaeadbb122bc77e9ccdcebbccb7cba8a9aead8842df278a512da3d4c7102cdb
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqJ:bGbvflT/ZFIjBzhxwOgXKarY1iBA
- TLSH T1602519BE74972645FE624C307FECF660DB57287ACB6BDAF24595A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/4596-2-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x001000000001b664-13.dat CryptoLocker_rule2 behavioral2/memory/4912-18-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4912-26-0x0000000008000000-0x0000000008022000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4912 hasfj.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 2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hasfj.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4596 wrote to memory of 4912 4596 2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe 89
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-07-28_d317a5e6c078f9dae35404da0f31a1a6_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4596 -
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4912
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\hasfj.exe
- Size 1.0MB
- SHA256 9fa140380ecae9180a20e5012677de8f5f425a23bd1625d4c5e9becf0337f77a
- MD5 fcd51222526b93befde58ee248f236d2
- SHA1 c89b038c8c1851a114ec3326bc2e40efb8313138
- SHA512 1596029aeddb3913575a847605425bb52a1d6094df3591ed2ca3bb7f3195c72bdeba385129e7ee088ee0ddfa866c02e786ce3d483f25363f08c0a34d9c925d4a
- SSDEEP 12288:bGbEnOflT/ZFIjBz3xjTxynGUOUhXfSAkVH/CrYQIUMkDmndJmzS+OAPqB:bGbvflT/ZFIjBzhxwOgXKarY1iBg
- TLSH T17A2509BE74972645FE625C307FECF660DB57287ACB6BDAF24195A0301A210D2FC62817
- MD5 SHA1 SHA512 SSDEEP TLSH